From c0894c6cfe2ca80f89122c070e20151c0f2fc5c0 Mon Sep 17 00:00:00 2001 From: Oleg Drokin Date: Wed, 24 Feb 2016 22:00:30 -0500 Subject: [PATCH] staging/lustre/llite: Adjust comments to better conform to coding style This patch fixes "Block comments use a trailing */ on a separate line" warnings from checkpatch. Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/llite/dcache.c | 18 +- drivers/staging/lustre/lustre/llite/dir.c | 29 ++-- drivers/staging/lustre/lustre/llite/file.c | 161 +++++++++++------- .../staging/lustre/lustre/llite/llite_close.c | 18 +- .../lustre/lustre/llite/llite_internal.h | 109 +++++++----- .../staging/lustre/lustre/llite/llite_lib.c | 86 ++++++---- .../staging/lustre/lustre/llite/llite_mmap.c | 20 ++- .../staging/lustre/lustre/llite/llite_nfs.c | 6 +- .../staging/lustre/lustre/llite/lproc_llite.c | 3 +- drivers/staging/lustre/lustre/llite/namei.c | 41 +++-- drivers/staging/lustre/lustre/llite/rw.c | 70 +++++--- drivers/staging/lustre/lustre/llite/rw26.c | 21 ++- .../staging/lustre/lustre/llite/statahead.c | 36 ++-- drivers/staging/lustre/lustre/llite/super25.c | 6 +- drivers/staging/lustre/lustre/llite/symlink.c | 3 +- drivers/staging/lustre/lustre/llite/vvp_io.c | 42 +++-- .../staging/lustre/lustre/llite/vvp_object.c | 3 +- .../staging/lustre/lustre/llite/vvp_page.c | 9 +- drivers/staging/lustre/lustre/llite/xattr.c | 15 +- .../staging/lustre/lustre/llite/xattr_cache.c | 6 +- 20 files changed, 451 insertions(+), 251 deletions(-) diff --git a/drivers/staging/lustre/lustre/llite/dcache.c b/drivers/staging/lustre/lustre/llite/dcache.c index 34eb17caa9dd..0bc0fb9f7a54 100644 --- a/drivers/staging/lustre/lustre/llite/dcache.c +++ b/drivers/staging/lustre/lustre/llite/dcache.c @@ -80,7 +80,8 @@ static void ll_release(struct dentry *de) * This avoids a race where ll_lookup_it() instantiates a dentry, but we get * an AST before calling d_revalidate_it(). The dentry still exists (marked * INVALID) so d_lookup() matches it, but we have no lock on it (so - * lock_match() fails) and we spin around real_lookup(). */ + * lock_match() fails) and we spin around real_lookup(). + */ static int ll_dcompare(const struct dentry *parent, const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) @@ -117,7 +118,8 @@ static inline int return_if_equal(struct ldlm_lock *lock, void *data) /* find any ldlm lock of the inode in mdc and lov * return 0 not find * 1 find one - * < 0 error */ + * < 0 error + */ static int find_cbdata(struct inode *inode) { struct ll_sb_info *sbi = ll_i2sbi(inode); @@ -163,10 +165,12 @@ static int ll_ddelete(const struct dentry *de) /* Disable this piece of code temporarily because this is called * inside dcache_lock so it's not appropriate to do lots of work * here. ATTENTION: Before this piece of code enabling, LU-2487 must be - * resolved. */ + * resolved. + */ #if 0 /* if not ldlm lock for this inode, set i_nlink to 0 so that - * this inode can be recycled later b=20433 */ + * this inode can be recycled later b=20433 + */ if (d_really_is_positive(de) && !find_cbdata(d_inode(de))) clear_nlink(d_inode(de)); #endif @@ -216,7 +220,8 @@ void ll_intent_drop_lock(struct lookup_intent *it) ldlm_lock_decref(&handle, it->d.lustre.it_lock_mode); /* bug 494: intent_release may be called multiple times, from - * this thread and we don't want to double-decref this lock */ + * this thread and we don't want to double-decref this lock + */ it->d.lustre.it_lock_mode = 0; if (it->d.lustre.it_remote_lock_mode != 0) { handle.cookie = it->d.lustre.it_remote_lock_handle; @@ -294,7 +299,8 @@ void ll_lookup_finish_locks(struct lookup_intent *it, struct inode *inode) if (it->it_op == IT_LOOKUP || it->it_op == IT_GETATTR) { /* on 2.6 there are situation when several lookups and * revalidations may be requested during single operation. - * therefore, we don't release intent here -bzzz */ + * therefore, we don't release intent here -bzzz + */ ll_intent_drop_lock(it); } } diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c index c2ee7fc0c177..bd88a3b760e7 100644 --- a/drivers/staging/lustre/lustre/llite/dir.c +++ b/drivers/staging/lustre/lustre/llite/dir.c @@ -379,7 +379,8 @@ struct page *ll_get_dir_page(struct inode *dir, __u64 hash, &it.d.lustre.it_lock_handle, dir, NULL); } else { /* for cross-ref object, l_ast_data of the lock may not be set, - * we reset it here */ + * we reset it here + */ md_set_lock_data(ll_i2sbi(dir)->ll_md_exp, &lockh.cookie, dir, NULL); } @@ -737,8 +738,9 @@ int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump, } /* In the following we use the fact that LOV_USER_MAGIC_V1 and - LOV_USER_MAGIC_V3 have the same initial fields so we do not - need to make the distinction between the 2 versions */ + * LOV_USER_MAGIC_V3 have the same initial fields so we do not + * need to make the distinction between the 2 versions + */ if (set_default && mgc->u.cli.cl_mgc_mgsexp) { char *param = NULL; char *buf; @@ -929,7 +931,8 @@ static int ll_ioc_copy_start(struct super_block *sb, struct hsm_copy *copy) } /* Store it the hsm_copy for later copytool use. - * Always modified even if no lsm. */ + * Always modified even if no lsm. + */ copy->hc_data_version = data_version; } @@ -1006,11 +1009,13 @@ static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy) } /* Store it the hsm_copy for later copytool use. - * Always modified even if no lsm. */ + * Always modified even if no lsm. + */ hpk.hpk_data_version = data_version; /* File could have been stripped during archiving, so we need - * to check anyway. */ + * to check anyway. + */ if ((copy->hc_hai.hai_action == HSMA_ARCHIVE) && (copy->hc_data_version != data_version)) { CDEBUG(D_HSM, "File data version mismatched. File content was changed during archiving. " @@ -1022,7 +1027,8 @@ static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy) * the cdt will loop on retried archive requests. * The policy engine will ask for a new archive later * when the file will not be modified for some tunable - * time */ + * time + */ /* we do not notify caller */ hpk.hpk_flags &= ~HP_FLAG_RETRY; /* hpk_errval must be >= 0 */ @@ -1150,7 +1156,8 @@ static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl) return rc; } /* If QIF_SPACE is not set, client should collect the - * space usage from OSSs by itself */ + * space usage from OSSs by itself + */ if (cmd == Q_GETQUOTA && !(oqctl->qc_dqblk.dqb_valid & QIF_SPACE) && !oqctl->qc_dqblk.dqb_curspace) { @@ -1201,7 +1208,8 @@ out: /* This function tries to get a single name component, * to send to the server. No actual path traversal involved, - * so we limit to NAME_MAX */ + * so we limit to NAME_MAX + */ static char *ll_getname(const char __user *filename) { int ret = 0, len; @@ -1803,7 +1811,8 @@ out_quotactl: hpk.hpk_data_version = 0; /* File may not exist in Lustre; all progress - * reported to Lustre root */ + * reported to Lustre root + */ rc = obd_iocontrol(cmd, sbi->ll_md_exp, sizeof(hpk), &hpk, NULL); return rc; diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c index ba65fc041ffd..4c25cf244886 100644 --- a/drivers/staging/lustre/lustre/llite/file.c +++ b/drivers/staging/lustre/lustre/llite/file.c @@ -166,7 +166,8 @@ static int ll_close_inode_openhandle(struct obd_export *md_exp, /* This close must have the epoch closed. */ LASSERT(epoch_close); /* MDS has instructed us to obtain Size-on-MDS attribute from - * OSTs and send setattr to back to MDS. */ + * OSTs and send setattr to back to MDS. + */ rc = ll_som_update(inode, op_data); if (rc) { CERROR("inode %lu mdc Size-on-MDS update failed: rc = %d\n", @@ -179,7 +180,8 @@ static int ll_close_inode_openhandle(struct obd_export *md_exp, } /* DATA_MODIFIED flag was successfully sent on close, cancel data - * modification flag. */ + * modification flag. + */ if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) { struct ll_inode_info *lli = ll_i2info(inode); @@ -242,7 +244,8 @@ int ll_md_real_close(struct inode *inode, fmode_t fmode) mutex_lock(&lli->lli_och_mutex); if (*och_usecount > 0) { /* There are still users of this handle, so skip - * freeing it. */ + * freeing it. + */ mutex_unlock(&lli->lli_och_mutex); return 0; } @@ -253,7 +256,8 @@ int ll_md_real_close(struct inode *inode, fmode_t fmode) if (och) { /* There might be a race and this handle may already - be closed. */ + * be closed. + */ rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och, NULL); } @@ -280,7 +284,8 @@ static int ll_md_close(struct obd_export *md_exp, struct inode *inode, bool lease_broken; /* Usually the lease is not released when the - * application crashed, we need to release here. */ + * application crashed, we need to release here. + */ rc = ll_lease_close(fd->fd_lease_och, inode, &lease_broken); CDEBUG(rc ? D_ERROR : D_INODE, "Clean up lease "DFID" %d/%d\n", PFID(&lli->lli_fid), rc, lease_broken); @@ -295,7 +300,8 @@ static int ll_md_close(struct obd_export *md_exp, struct inode *inode, } /* Let's see if we have good enough OPEN lock on the file and if - we can skip talking to MDS */ + * we can skip talking to MDS + */ mutex_lock(&lli->lli_och_mutex); if (fd->fd_omode & FMODE_WRITE) { @@ -356,9 +362,10 @@ int ll_file_release(struct inode *inode, struct file *file) fd = LUSTRE_FPRIVATE(file); LASSERT(fd); - /* The last ref on @file, maybe not the owner pid of statahead. + /* The last ref on @file, maybe not be the owner pid of statahead. * Different processes can open the same dir, "ll_opendir_key" means: - * it is me that should stop the statahead thread. */ + * it is me that should stop the statahead thread. + */ if (S_ISDIR(inode->i_mode) && lli->lli_opendir_key == fd && lli->lli_opendir_pid != 0) ll_stop_statahead(inode, lli->lli_opendir_key); @@ -395,15 +402,15 @@ static int ll_intent_file_open(struct dentry *dentry, void *lmm, __u32 opc = LUSTRE_OPC_ANY; int rc; - /* Usually we come here only for NFSD, and we want open lock. - But we can also get here with pre 2.6.15 patchless kernels, and in - that case that lock is also ok */ + /* Usually we come here only for NFSD, and we want open lock. */ /* We can also get here if there was cached open handle in revalidate_it * but it disappeared while we were getting from there to ll_file_open. * But this means this file was closed and immediately opened which - * makes a good candidate for using OPEN lock */ + * makes a good candidate for using OPEN lock + */ /* If lmmsize & lmm are not 0, we are just setting stripe info - * parameters. No need for the open lock */ + * parameters. No need for the open lock + */ if (!lmm && lmmsize == 0) { itp->it_flags |= MDS_OPEN_LOCK; if (itp->it_flags & FMODE_WRITE) @@ -567,7 +574,8 @@ int ll_file_open(struct inode *inode, struct file *file) if (!it || !it->d.lustre.it_disposition) { /* Convert f_flags into access mode. We cannot use file->f_mode, * because everything but O_ACCMODE mask was stripped from - * there */ + * there + */ if ((oit.it_flags + 1) & O_ACCMODE) oit.it_flags++; if (file->f_flags & O_TRUNC) @@ -576,17 +584,20 @@ int ll_file_open(struct inode *inode, struct file *file) /* kernel only call f_op->open in dentry_open. filp_open calls * dentry_open after call to open_namei that checks permissions. * Only nfsd_open call dentry_open directly without checking - * permissions and because of that this code below is safe. */ + * permissions and because of that this code below is safe. + */ if (oit.it_flags & (FMODE_WRITE | FMODE_READ)) oit.it_flags |= MDS_OPEN_OWNEROVERRIDE; /* We do not want O_EXCL here, presumably we opened the file - * already? XXX - NFS implications? */ + * already? XXX - NFS implications? + */ oit.it_flags &= ~O_EXCL; /* bug20584, if "it_flags" contains O_CREAT, the file will be * created if necessary, then "IT_CREAT" should be set to keep - * consistent with it */ + * consistent with it + */ if (oit.it_flags & O_CREAT) oit.it_op |= IT_CREAT; @@ -610,7 +621,8 @@ restart: if (*och_p) { /* Open handle is present */ if (it_disposition(it, DISP_OPEN_OPEN)) { /* Well, there's extra open request that we do not need, - let's close it somehow. This will decref request. */ + * let's close it somehow. This will decref request. + */ rc = it_open_error(DISP_OPEN_OPEN, it); if (rc) { mutex_unlock(&lli->lli_och_mutex); @@ -631,10 +643,11 @@ restart: LASSERT(*och_usecount == 0); if (!it->d.lustre.it_disposition) { /* We cannot just request lock handle now, new ELC code - means that one of other OPEN locks for this file - could be cancelled, and since blocking ast handler - would attempt to grab och_mutex as well, that would - result in a deadlock */ + * means that one of other OPEN locks for this file + * could be cancelled, and since blocking ast handler + * would attempt to grab och_mutex as well, that would + * result in a deadlock + */ mutex_unlock(&lli->lli_och_mutex); it->it_create_mode |= M_CHECK_STALE; rc = ll_intent_file_open(file->f_path.dentry, NULL, 0, it); @@ -654,9 +667,11 @@ restart: /* md_intent_lock() didn't get a request ref if there was an * open error, so don't do cleanup on the request here - * (bug 3430) */ + * (bug 3430) + */ /* XXX (green): Should not we bail out on any error here, not - * just open error? */ + * just open error? + */ rc = it_open_error(DISP_OPEN_OPEN, it); if (rc) goto out_och_free; @@ -671,8 +686,9 @@ restart: fd = NULL; /* Must do this outside lli_och_mutex lock to prevent deadlock where - different kind of OPEN lock for this same inode gets cancelled - by ldlm_cancel_lru */ + * different kind of OPEN lock for this same inode gets cancelled + * by ldlm_cancel_lru + */ if (!S_ISREG(inode->i_mode)) goto out_och_free; @@ -816,7 +832,8 @@ ll_lease_open(struct inode *inode, struct file *file, fmode_t fmode, * broken; * LDLM_FL_EXCL: Set this flag so that it won't be matched by normal * open in ll_md_blocking_ast(). Otherwise as ll_md_blocking_lease_ast - * doesn't deal with openhandle, so normal openhandle will be leaked. */ + * doesn't deal with openhandle, so normal openhandle will be leaked. + */ LDLM_FL_NO_LRU | LDLM_FL_EXCL); ll_finish_md_op_data(op_data); ptlrpc_req_finished(req); @@ -985,7 +1002,8 @@ int ll_merge_lvb(const struct lu_env *env, struct inode *inode) ll_inode_size_lock(inode); /* merge timestamps the most recently obtained from mds with - timestamps obtained from osts */ + * timestamps obtained from osts + */ LTIME_S(inode->i_atime) = lli->lli_lvb.lvb_atime; LTIME_S(inode->i_mtime) = lli->lli_lvb.lvb_mtime; LTIME_S(inode->i_ctime) = lli->lli_lvb.lvb_ctime; @@ -1154,7 +1172,8 @@ restart: out: cl_io_fini(env, io); /* If any bit been read/written (result != 0), we just return - * short read/write instead of restart io. */ + * short read/write instead of restart io. + */ if ((result == 0 || result == -ENODATA) && io->ci_need_restart) { CDEBUG(D_VFSTRACE, "Restart %s on %pD from %lld, count:%zd\n", iot == CIT_READ ? "read" : "write", @@ -1430,7 +1449,8 @@ int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename, stripe_count = 0; /* if function called for directory - we should - * avoid swab not existent lsm objects */ + * avoid swab not existent lsm objects + */ if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) { lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm); if (S_ISREG(body->mode)) @@ -1779,7 +1799,8 @@ static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg) int rc = 0; /* Get the extent count so we can calculate the size of - * required fiemap buffer */ + * required fiemap buffer + */ if (get_user(extent_count, &((struct ll_user_fiemap __user *)arg)->fm_extent_count)) return -EFAULT; @@ -1803,7 +1824,8 @@ static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg) /* If fm_extent_count is non-zero, read the first extent since * it is used to calculate end_offset and device from previous - * fiemap call. */ + * fiemap call. + */ if (extent_count) { if (copy_from_user(&fiemap_s->fm_extents[0], (char __user *)arg + sizeof(*fiemap_s), @@ -1914,7 +1936,8 @@ int ll_hsm_release(struct inode *inode) /* Release the file. * NB: lease lock handle is released in mdc_hsm_release_pack() because - * we still need it to pack l_remote_handle to MDT. */ + * we still need it to pack l_remote_handle to MDT. + */ rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och, &data_version); och = NULL; @@ -2004,7 +2027,8 @@ static int ll_swap_layouts(struct file *file1, struct file *file2, } /* to be able to restore mtime and atime after swap - * we need to first save them */ + * we need to first save them + */ if (lsl->sl_flags & (SWAP_LAYOUTS_KEEP_MTIME | SWAP_LAYOUTS_KEEP_ATIME)) { llss->ia1.ia_mtime = llss->inode1->i_mtime; @@ -2016,7 +2040,8 @@ static int ll_swap_layouts(struct file *file1, struct file *file2, } /* ultimate check, before swapping the layouts we check if - * dataversion has changed (if requested) */ + * dataversion has changed (if requested) + */ if (llss->check_dv1) { rc = ll_data_version(llss->inode1, &dv, 0); if (rc) @@ -2039,9 +2064,11 @@ static int ll_swap_layouts(struct file *file1, struct file *file2, /* struct md_op_data is used to send the swap args to the mdt * only flags is missing, so we use struct mdc_swap_layouts - * through the md_op_data->op_data */ + * through the md_op_data->op_data + */ /* flags from user space have to be converted before they are send to - * server, no flag is sent today, they are only used on the client */ + * server, no flag is sent today, they are only used on the client + */ msl.msl_flags = 0; rc = -ENOMEM; op_data = ll_prep_md_op_data(NULL, llss->inode1, llss->inode2, NULL, 0, @@ -2110,7 +2137,8 @@ static int ll_hsm_state_set(struct inode *inode, struct hsm_state_set *hss) return -EINVAL; /* Non-root users are forbidden to set or clear flags which are - * NOT defined in HSM_USER_MASK. */ + * NOT defined in HSM_USER_MASK. + */ if (((hss->hss_setmask | hss->hss_clearmask) & ~HSM_USER_MASK) && !capable(CFS_CAP_SYS_ADMIN)) return -EPERM; @@ -2534,15 +2562,17 @@ static int ll_flush(struct file *file, fl_owner_t id) LASSERT(!S_ISDIR(inode->i_mode)); /* catch async errors that were recorded back when async writeback - * failed for pages in this mapping. */ + * failed for pages in this mapping. + */ rc = lli->lli_async_rc; lli->lli_async_rc = 0; err = lov_read_and_clear_async_rc(lli->lli_clob); if (rc == 0) rc = err; - /* The application has been told write failure already. - * Do not report failure again. */ + /* The application has been told about write failure already. + * Do not report failure again. + */ if (fd->fd_write_failed) return 0; return rc ? -EIO : 0; @@ -2610,7 +2640,8 @@ int ll_fsync(struct file *file, loff_t start, loff_t end, int datasync) inode_lock(inode); /* catch async errors that were recorded back when async writeback - * failed for pages in this mapping. */ + * failed for pages in this mapping. + */ if (!S_ISDIR(inode->i_mode)) { err = lli->lli_async_rc; lli->lli_async_rc = 0; @@ -2681,7 +2712,8 @@ ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock) * I guess between lockd processes) and then compares pid. * As such we assign pid to the owner field to make it all work, * conflict with normal locks is unlikely since pid space and - * pointer space for current->files are not intersecting */ + * pointer space for current->files are not intersecting + */ if (file_lock->fl_lmops && file_lock->fl_lmops->lm_compare_owner) flock.l_flock.owner = (unsigned long)file_lock->fl_pid; @@ -2697,7 +2729,8 @@ ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock) * order to process an unlock request we need all of the same * information that is given with a normal read or write record * lock request. To avoid creating another ldlm unlock (cancel) - * message we'll treat a LCK_NL flock request as an unlock. */ + * message we'll treat a LCK_NL flock request as an unlock. + */ einfo.ei_mode = LCK_NL; break; case F_WRLCK: @@ -2728,7 +2761,8 @@ ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock) #endif flags = LDLM_FL_TEST_LOCK; /* Save the old mode so that if the mode in the lock changes we - * can decrement the appropriate reader or writer refcount. */ + * can decrement the appropriate reader or writer refcount. + */ file_lock->fl_type = einfo.ei_mode; break; default: @@ -2872,7 +2906,8 @@ static int __ll_inode_revalidate(struct dentry *dentry, __u64 ibits) /* XXX: Enable OBD_CONNECT_ATTRFID to reduce unnecessary getattr RPC. * But under CMD case, it caused some lock issues, should be fixed - * with new CMD ibits lock. See bug 12718 */ + * with new CMD ibits lock. See bug 12718 + */ if (exp_connect_flags(exp) & OBD_CONNECT_ATTRFID) { struct lookup_intent oit = { .it_op = IT_GETATTR }; struct md_op_data *op_data; @@ -2890,7 +2925,8 @@ static int __ll_inode_revalidate(struct dentry *dentry, __u64 ibits) oit.it_create_mode |= M_CHECK_STALE; rc = md_intent_lock(exp, op_data, NULL, 0, /* we are not interested in name - based lookup */ + * based lookup + */ &oit, 0, &req, ll_md_blocking_ast, 0); ll_finish_md_op_data(op_data); @@ -2907,9 +2943,10 @@ static int __ll_inode_revalidate(struct dentry *dentry, __u64 ibits) } /* Unlinked? Unhash dentry, so it is not picked up later by - do_lookup() -> ll_revalidate_it(). We cannot use d_drop - here to preserve get_cwd functionality on 2.6. - Bug 10503 */ + * do_lookup() -> ll_revalidate_it(). We cannot use d_drop + * here to preserve get_cwd functionality on 2.6. + * Bug 10503 + */ if (!d_inode(dentry)->i_nlink) d_lustre_invalidate(dentry, 0); @@ -3075,7 +3112,8 @@ int ll_inode_permission(struct inode *inode, int mask) return -ECHILD; /* as root inode are NOT getting validated in lookup operation, - * need to do it before permission check. */ + * need to do it before permission check. + */ if (is_root_inode(inode)) { rc = __ll_inode_revalidate(inode->i_sb->s_root, @@ -3274,7 +3312,8 @@ int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf) /* it can only be allowed to match after layout is * applied to inode otherwise false layout would be * seen. Applying layout should happen before dropping - * the intent lock. */ + * the intent lock. + */ ldlm_lock_allow_match(lock); } } @@ -3304,7 +3343,8 @@ static int ll_layout_fetch(struct inode *inode, struct ldlm_lock *lock) * within DLM_LVB of dlm reply; otherwise if the lock was ever * blocked and then granted via completion ast, we have to fetch * layout here. Please note that we can't use the LVB buffer in - * completion AST because it doesn't have a large enough buffer */ + * completion AST because it doesn't have a large enough buffer + */ rc = ll_get_default_mdsize(sbi, &lmmsize); if (rc == 0) rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode), @@ -3383,12 +3423,14 @@ static int ll_layout_lock_set(struct lustre_handle *lockh, enum ldlm_mode mode, lvb_ready = !!(lock->l_flags & LDLM_FL_LVB_READY); unlock_res_and_lock(lock); /* checking lvb_ready is racy but this is okay. The worst case is - * that multi processes may configure the file on the same time. */ + * that multi processes may configure the file on the same time. + */ if (lvb_ready || !reconf) { rc = -ENODATA; if (lvb_ready) { /* layout_gen must be valid if layout lock is not - * cancelled and stripe has already set */ + * cancelled and stripe has already set + */ *gen = ll_layout_version_get(lli); rc = 0; } @@ -3402,7 +3444,8 @@ static int ll_layout_lock_set(struct lustre_handle *lockh, enum ldlm_mode mode, /* for layout lock, lmm is returned in lock's lvb. * lvb_data is immutable if the lock is held so it's safe to access it * without res lock. See the description in ldlm_lock_decref_internal() - * for the condition to free lvb_data of layout lock */ + * for the condition to free lvb_data of layout lock + */ if (lock->l_lvb_data) { rc = obd_unpackmd(sbi->ll_dt_exp, &md.lsm, lock->l_lvb_data, lock->l_lvb_len); @@ -3421,7 +3464,8 @@ static int ll_layout_lock_set(struct lustre_handle *lockh, enum ldlm_mode mode, goto out; /* set layout to file. Unlikely this will fail as old layout was - * surely eliminated */ + * surely eliminated + */ memset(&conf, 0, sizeof(conf)); conf.coc_opc = OBJECT_CONF_SET; conf.coc_inode = inode; @@ -3500,7 +3544,8 @@ int ll_layout_refresh(struct inode *inode, __u32 *gen) again: /* mostly layout lock is caching on the local side, so try to match - * it before grabbing layout lock mutex. */ + * it before grabbing layout lock mutex. + */ mode = ll_take_md_lock(inode, MDS_INODELOCK_LAYOUT, &lockh, 0, LCK_CR | LCK_CW | LCK_PR | LCK_PW); if (mode != 0) { /* hit cached lock */ diff --git a/drivers/staging/lustre/lustre/llite/llite_close.c b/drivers/staging/lustre/lustre/llite/llite_close.c index 626846ebb145..fcb665790316 100644 --- a/drivers/staging/lustre/lustre/llite/llite_close.c +++ b/drivers/staging/lustre/lustre/llite/llite_close.c @@ -76,7 +76,8 @@ void vvp_write_complete(struct ccc_object *club, struct ccc_page *page) /** Queues DONE_WRITING if * - done writing is allowed; - * - inode has no no dirty pages; */ + * - inode has no no dirty pages; + */ void ll_queue_done_writing(struct inode *inode, unsigned long flags) { struct ll_inode_info *lli = ll_i2info(inode); @@ -106,7 +107,8 @@ void ll_queue_done_writing(struct inode *inode, unsigned long flags) * close() happen, epoch is closed as the inode is marked as * LLIF_EPOCH_PENDING. When pages are written inode should not * be inserted into the queue again, clear this flag to avoid - * it. */ + * it. + */ lli->lli_flags &= ~LLIF_DONE_WRITING; wake_up(&lcq->lcq_waitq); @@ -147,7 +149,8 @@ void ll_ioepoch_close(struct inode *inode, struct md_op_data *op_data, LASSERT(*och); LASSERT(!lli->lli_pending_och); /* Inode is dirty and there is no pending write done - * request yet, DONE_WRITE is to be sent later. */ + * request yet, DONE_WRITE is to be sent later. + */ lli->lli_flags |= LLIF_EPOCH_PENDING; lli->lli_pending_och = *och; spin_unlock(&lli->lli_lock); @@ -159,7 +162,8 @@ void ll_ioepoch_close(struct inode *inode, struct md_op_data *op_data, if (flags & LLIF_DONE_WRITING) { /* Some pages are still dirty, it is early to send * DONE_WRITE. Wait until all pages will be flushed - * and try DONE_WRITE again later. */ + * and try DONE_WRITE again later. + */ LASSERT(!(lli->lli_flags & LLIF_DONE_WRITING)); lli->lli_flags |= LLIF_DONE_WRITING; spin_unlock(&lli->lli_lock); @@ -187,7 +191,8 @@ void ll_ioepoch_close(struct inode *inode, struct md_op_data *op_data, } /* There is a pending DONE_WRITE -- close epoch with no - * attribute change. */ + * attribute change. + */ if (lli->lli_flags & LLIF_EPOCH_PENDING) { spin_unlock(&lli->lli_lock); goto out; @@ -295,7 +300,8 @@ static void ll_done_writing(struct inode *inode) rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, NULL); if (rc == -EAGAIN) /* MDS has instructed us to obtain Size-on-MDS attribute from - * OSTs and send setattr to back to MDS. */ + * OSTs and send setattr to back to MDS. + */ rc = ll_som_update(inode, op_data); else if (rc) CERROR("inode %lu mdc done_writing failed: rc = %d\n", diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h index bbd5ab8f6e94..12fdca9cb7c9 100644 --- a/drivers/staging/lustre/lustre/llite/llite_internal.h +++ b/drivers/staging/lustre/lustre/llite/llite_internal.h @@ -93,9 +93,10 @@ struct ll_remote_perm { gid_t lrp_gid; uid_t lrp_fsuid; gid_t lrp_fsgid; - int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this - is access permission with - lrp_fsuid/lrp_fsgid. */ + int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this + * is access permission with + * lrp_fsuid/lrp_fsgid. + */ }; enum lli_flags { @@ -106,7 +107,8 @@ enum lli_flags { /* DONE WRITING is allowed. */ LLIF_DONE_WRITING = (1 << 2), /* Sizeon-on-MDS attributes are changed. An attribute update needs to - * be sent to MDS. */ + * be sent to MDS. + */ LLIF_SOM_DIRTY = (1 << 3), /* File data is modified. */ LLIF_DATA_MODIFIED = (1 << 4), @@ -130,7 +132,8 @@ struct ll_inode_info { /* identifying fields for both metadata and data stacks. */ struct lu_fid lli_fid; /* Parent fid for accessing default stripe data on parent directory - * for allocating OST objects after a mknod() and later open-by-FID. */ + * for allocating OST objects after a mknod() and later open-by-FID. + */ struct lu_fid lli_pfid; struct list_head lli_close_list; @@ -139,11 +142,13 @@ struct ll_inode_info { /* handle is to be sent to MDS later on done_writing and setattr. * Open handle data are needed for the recovery to reconstruct - * the inode state on the MDS. XXX: recovery is not ready yet. */ + * the inode state on the MDS. XXX: recovery is not ready yet. + */ struct obd_client_handle *lli_pending_och; /* We need all three because every inode may be opened in different - * modes */ + * modes + */ struct obd_client_handle *lli_mds_read_och; struct obd_client_handle *lli_mds_write_och; struct obd_client_handle *lli_mds_exec_och; @@ -160,7 +165,8 @@ struct ll_inode_info { spinlock_t lli_agl_lock; /* Try to make the d::member and f::member are aligned. Before using - * these members, make clear whether it is directory or not. */ + * these members, make clear whether it is directory or not. + */ union { /* for directory */ struct { @@ -171,13 +177,15 @@ struct ll_inode_info { /* since parent-child threads can share the same @file * struct, "opendir_key" is the token when dir close for * case of parent exit before child -- it is me should - * cleanup the dir readahead. */ + * cleanup the dir readahead. + */ void *d_opendir_key; struct ll_statahead_info *d_sai; /* protect statahead stuff. */ spinlock_t d_sa_lock; - /* "opendir_pid" is the token when lookup/revalid - * -- I am the owner of dir statahead. */ + /* "opendir_pid" is the token when lookup/revalidate + * -- I am the owner of dir statahead. + */ pid_t d_opendir_pid; } d; @@ -303,7 +311,8 @@ static inline struct ll_inode_info *ll_i2info(struct inode *inode) } /* default to about 40meg of readahead on a given system. That much tied - * up in 512k readahead requests serviced at 40ms each is about 1GB/s. */ + * up in 512k readahead requests serviced at 40ms each is about 1GB/s. + */ #define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - PAGE_CACHE_SHIFT)) /* default to read-ahead full files smaller than 2MB on the second read */ @@ -342,11 +351,13 @@ struct ra_io_arg { unsigned long ria_end; /* end offset of read-ahead*/ /* If stride read pattern is detected, ria_stoff means where * stride read is started. Note: for normal read-ahead, the - * value here is meaningless, and also it will not be accessed*/ + * value here is meaningless, and also it will not be accessed + */ pgoff_t ria_stoff; /* ria_length and ria_pages are the length and pages length in the * stride I/O mode. And they will also be used to check whether - * it is stride I/O read-ahead in the read-ahead pages*/ + * it is stride I/O read-ahead in the read-ahead pages + */ unsigned long ria_length; unsigned long ria_pages; }; @@ -453,7 +464,8 @@ struct eacl_table { struct ll_sb_info { /* this protects pglist and ra_info. It isn't safe to - * grab from interrupt contexts */ + * grab from interrupt contexts + */ spinlock_t ll_lock; spinlock_t ll_pp_extent_lock; /* pp_extent entry*/ spinlock_t ll_process_lock; /* ll_rw_process_info */ @@ -500,13 +512,16 @@ struct ll_sb_info { /* metadata stat-ahead */ unsigned int ll_sa_max; /* max statahead RPCs */ atomic_t ll_sa_total; /* statahead thread started - * count */ + * count + */ atomic_t ll_sa_wrong; /* statahead thread stopped for - * low hit ratio */ + * low hit ratio + */ atomic_t ll_agl_total; /* AGL thread started count */ - dev_t ll_sdev_orig; /* save s_dev before assign for - * clustered nfs */ + dev_t ll_sdev_orig; /* save s_dev before assign for + * clustered nfs + */ struct rmtacl_ctl_table ll_rct; struct eacl_table ll_et; __kernel_fsid_t ll_fsid; @@ -617,13 +632,15 @@ struct ll_file_data { __u32 fd_flags; fmode_t fd_omode; /* openhandle if lease exists for this file. - * Borrow lli->lli_och_mutex to protect assignment */ + * Borrow lli->lli_och_mutex to protect assignment + */ struct obd_client_handle *fd_lease_och; struct obd_client_handle *fd_och; struct file *fd_file; /* Indicate whether need to report failure when close. * true: failure is known, not report again. - * false: unknown failure, should report. */ + * false: unknown failure, should report. + */ bool fd_write_failed; }; @@ -1105,39 +1122,44 @@ static inline u64 rce_ops2valid(int ops) struct ll_statahead_info { struct inode *sai_inode; atomic_t sai_refcount; /* when access this struct, hold - * refcount */ + * refcount + */ unsigned int sai_generation; /* generation for statahead */ unsigned int sai_max; /* max ahead of lookup */ __u64 sai_sent; /* stat requests sent count */ __u64 sai_replied; /* stat requests which received - * reply */ + * reply + */ __u64 sai_index; /* index of statahead entry */ __u64 sai_index_wait; /* index of entry which is the - * caller is waiting for */ + * caller is waiting for + */ __u64 sai_hit; /* hit count */ __u64 sai_miss; /* miss count: - * for "ls -al" case, it includes - * hidden dentry miss; - * for "ls -l" case, it does not - * include hidden dentry miss. - * "sai_miss_hidden" is used for - * the later case. - */ + * for "ls -al" case, it includes + * hidden dentry miss; + * for "ls -l" case, it does not + * include hidden dentry miss. + * "sai_miss_hidden" is used for + * the later case. + */ unsigned int sai_consecutive_miss; /* consecutive miss */ unsigned int sai_miss_hidden;/* "ls -al", but first dentry - * is not a hidden one */ + * is not a hidden one + */ unsigned int sai_skip_hidden;/* skipped hidden dentry count */ unsigned int sai_ls_all:1, /* "ls -al", do stat-ahead for - * hidden entries */ + * hidden entries + */ sai_agl_valid:1;/* AGL is valid for the dir */ - wait_queue_head_t sai_waitq; /* stat-ahead wait queue */ + wait_queue_head_t sai_waitq; /* stat-ahead wait queue */ struct ptlrpc_thread sai_thread; /* stat-ahead thread */ struct ptlrpc_thread sai_agl_thread; /* AGL thread */ - struct list_head sai_entries; /* entry list */ - struct list_head sai_entries_received; /* entries returned */ - struct list_head sai_entries_stated; /* entries stated */ - struct list_head sai_entries_agl; /* AGL entries to be sent */ - struct list_head sai_cache[LL_SA_CACHE_SIZE]; + struct list_head sai_entries; /* entry list */ + struct list_head sai_entries_received; /* entries returned */ + struct list_head sai_entries_stated; /* entries stated */ + struct list_head sai_entries_agl; /* AGL entries to be sent */ + struct list_head sai_cache[LL_SA_CACHE_SIZE]; spinlock_t sai_cache_lock[LL_SA_CACHE_SIZE]; atomic_t sai_cache_count; /* entry count in cache */ }; @@ -1311,13 +1333,15 @@ int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end, /** direct write pages */ struct ll_dio_pages { /** page array to be written. we don't support - * partial pages except the last one. */ + * partial pages except the last one. + */ struct page **ldp_pages; /* offset of each page */ loff_t *ldp_offsets; /** if ldp_offsets is NULL, it means a sequential * pages to be written, then this is the file offset - * of the * first page. */ + * of the first page. + */ loff_t ldp_start_offset; /** how many bytes are to be written. */ size_t ldp_size; @@ -1359,7 +1383,8 @@ static inline void ll_set_lock_data(struct obd_export *exp, struct inode *inode, * remote MDT, where the object is, will grant * UPDATE|PERM lock. The inode will be attached to both * LOOKUP and PERM locks, so revoking either locks will - * case the dcache being cleared */ + * case the dcache being cleared + */ if (it->d.lustre.it_remote_lock_mode) { handle.cookie = it->d.lustre.it_remote_lock_handle; CDEBUG(D_DLMTRACE, "setting l_data to inode %p(%lu/%u) for remote lock %#llx\n", diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c index b652aeeb7d65..d03f884f0c21 100644 --- a/drivers/staging/lustre/lustre/llite/llite_lib.c +++ b/drivers/staging/lustre/lustre/llite/llite_lib.c @@ -204,7 +204,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT)) /* flag mdc connection as lightweight, only used for test - * purpose, use with care */ + * purpose, use with care + */ data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT; data->ocd_ibits_known = MDS_INODELOCK_FULL; @@ -252,7 +253,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, /* For mount, we only need fs info from MDT0, and also in DNE, it * can make sure the client can be mounted as long as MDT0 is - * available */ + * available + */ err = obd_statfs(NULL, sbi->ll_md_exp, osfs, cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), OBD_STATFS_FOR_MDT0); @@ -265,7 +267,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, * we can access the MDC export directly and exp_connect_flags will * be non-zero, but if accessing an upgraded 2.1 server it will * have the correct flags filled in. - * XXX: fill in the LMV exp_connect_flags from MDC(s). */ + * XXX: fill in the LMV exp_connect_flags from MDC(s). + */ valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD; if (exp_connect_flags(sbi->ll_md_exp) != 0 && valid != CLIENT_CONNECT_MDT_REQD) { @@ -382,7 +385,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, /* OBD_CONNECT_CKSUM should always be set, even if checksums are * disabled by default, because it can still be enabled on the * fly via /sys. As a consequence, we still need to come to an - * agreement on the supported algorithms at connect time */ + * agreement on the supported algorithms at connect time + */ data->ocd_connect_flags |= OBD_CONNECT_CKSUM; if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY)) @@ -453,7 +457,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, #endif /* make root inode - * XXX: move this to after cbd setup? */ + * XXX: move this to after cbd setup? + */ valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS; if (sbi->ll_flags & LL_SBI_RMT_CLIENT) valid |= OBD_MD_FLRMTPERM; @@ -543,9 +548,11 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, /* We set sb->s_dev equal on all lustre clients in order to support * NFS export clustering. NFSD requires that the FSID be the same - * on all clients. */ + * on all clients. + */ /* s_dev is also used in lt_compare() to compare two fs, but that is - * only a node-local comparison. */ + * only a node-local comparison. + */ uuid = obd_get_uuid(sbi->ll_md_exp); if (uuid) { sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid)); @@ -625,7 +632,8 @@ static void client_common_put_super(struct super_block *sb) obd_disconnect(sbi->ll_dt_exp); sbi->ll_dt_exp = NULL; /* wait till all OSCs are gone, since cl_cache is accessing sbi. - * see LU-2543. */ + * see LU-2543. + */ obd_zombie_barrier(); ldebugfs_unregister_mountpoint(sbi); @@ -646,7 +654,8 @@ void ll_kill_super(struct super_block *sb) sbi = ll_s2sbi(sb); /* we need to restore s_dev from changed for clustered NFS before * put_super because new kernels have cached s_dev and change sb->s_dev - * in put_super not affected real removing devices */ + * in put_super not affected real removing devices + */ if (sbi) { sb->s_dev = sbi->ll_sdev_orig; sbi->ll_umounting = 1; @@ -889,8 +898,9 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt) sb->s_d_op = &ll_d_ops; /* Generate a string unique to this super, in case some joker tries - to mount the same fs at two mount points. - Use the address of the super itself.*/ + * to mount the same fs at two mount points. + * Use the address of the super itself. + */ cfg->cfg_instance = sb; cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid; cfg->cfg_callback = class_config_llog_handler; @@ -963,7 +973,8 @@ void ll_put_super(struct super_block *sb) } /* We need to set force before the lov_disconnect in - lustre_common_put_super, since l_d cleans up osc's as well. */ + * lustre_common_put_super, since l_d cleans up osc's as well. + */ if (force) { next = 0; while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, @@ -1114,7 +1125,8 @@ static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data, if (rc == -ENOENT) { clear_nlink(inode); /* Unlinked special device node? Or just a race? - * Pretend we done everything. */ + * Pretend we did everything. + */ if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode)) { ia_valid = op_data->op_attr.ia_valid; @@ -1137,7 +1149,8 @@ static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data, ia_valid = op_data->op_attr.ia_valid; /* inode size will be in cl_setattr_ost, can't do it now since dirty - * cache is not cleared yet. */ + * cache is not cleared yet. + */ op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE); rc = simple_setattr(dentry, &op_data->op_attr); op_data->op_attr.ia_valid = ia_valid; @@ -1173,7 +1186,8 @@ static int ll_setattr_done_writing(struct inode *inode, rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod); if (rc == -EAGAIN) /* MDS has instructed us to obtain Size-on-MDS attribute - * from OSTs and send setattr to back to MDS. */ + * from OSTs and send setattr to back to MDS. + */ rc = ll_som_update(inode, op_data); else if (rc) CERROR("inode %lu mdc truncate failed: rc = %d\n", @@ -1220,7 +1234,8 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import) /* The maximum Lustre file size is variable, based on the * OST maximum object size and number of stripes. This - * needs another check in addition to the VFS check above. */ + * needs another check in addition to the VFS check above. + */ if (attr->ia_size > ll_file_maxbytes(inode)) { CDEBUG(D_INODE, "file "DFID" too large %llu > %llu\n", PFID(&lli->lli_fid), attr->ia_size, @@ -1268,7 +1283,8 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import) } /* We always do an MDS RPC, even if we're only changing the size; - * only the MDS knows whether truncate() should fail with -ETXTBUSY */ + * only the MDS knows whether truncate() should fail with -ETXTBUSY + */ op_data = kzalloc(sizeof(*op_data), GFP_NOFS); if (!op_data) @@ -1302,7 +1318,8 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import) /* if not in HSM import mode, clear size attr for released file * we clear the attribute send to MDT in op_data, not the original * received from caller in attr which is used later to - * decide return code */ + * decide return code + */ if (file_is_released && (attr->ia_valid & ATTR_SIZE) && !hsm_import) op_data->op_attr.ia_valid &= ~ATTR_SIZE; @@ -1340,7 +1357,8 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import) * extent lock (new_size:EOF for truncate). It may seem * excessive to send mtime/atime updates to OSTs when not * setting times to past, but it is necessary due to possible - * time de-synchronization between MDT inode and OST objects */ + * time de-synchronization between MDT inode and OST objects + */ if (attr->ia_valid & ATTR_SIZE) down_write(&lli->lli_trunc_sem); rc = cl_setattr_ost(inode, attr); @@ -1468,7 +1486,8 @@ int ll_statfs(struct dentry *de, struct kstatfs *sfs) /* We need to downshift for all 32-bit kernels, because we can't * tell if the kernel is being called via sys_statfs64() or not. * Stop before overflowing f_bsize - in which case it is better - * to just risk EOVERFLOW if caller is using old sys_statfs(). */ + * to just risk EOVERFLOW if caller is using old sys_statfs(). + */ if (sizeof(long) < 8) { while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) { sfs->f_bsize <<= 1; @@ -1602,7 +1621,8 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md) /* As it is possible a blocking ast has been processed * by this time, we need to check there is an UPDATE * lock on the client and set LLIF_MDS_SIZE_LOCK holding - * it. */ + * it. + */ mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE, &lockh, LDLM_FL_CBPENDING, LCK_CR | LCK_CW | @@ -1615,7 +1635,8 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md) inode->i_ino, lli->lli_flags); } else { /* Use old size assignment to avoid - * deadlock bz14138 & bz14326 */ + * deadlock bz14138 & bz14326 + */ i_size_write(inode, body->size); spin_lock(&lli->lli_lock); lli->lli_flags |= LLIF_MDS_SIZE_LOCK; @@ -1625,7 +1646,8 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md) } } else { /* Use old size assignment to avoid - * deadlock bz14138 & bz14326 */ + * deadlock bz14138 & bz14326 + */ i_size_write(inode, body->size); CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n", @@ -1655,7 +1677,8 @@ void ll_read_inode2(struct inode *inode, void *opaque) /* Core attributes from the MDS first. This is a new inode, and * the VFS doesn't zero times in the core inode so we have to do * it ourselves. They will be overwritten by either MDS or OST - * attributes - we just need to make sure they aren't newer. */ + * attributes - we just need to make sure they aren't newer. + */ LTIME_S(inode->i_mtime) = 0; LTIME_S(inode->i_atime) = 0; LTIME_S(inode->i_ctime) = 0; @@ -1689,7 +1712,8 @@ void ll_delete_inode(struct inode *inode) if (S_ISREG(inode->i_mode) && lli->lli_clob) /* discard all dirty pages before truncating them, required by - * osc_extent implementation at LU-1030. */ + * osc_extent implementation at LU-1030. + */ cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_DISCARD, 1); @@ -1984,7 +2008,8 @@ int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req, * 1. proc1: mdt returns a lsm but not granting layout * 2. layout was changed by another client * 3. proc2: refresh layout and layout lock granted - * 4. proc1: to apply a stale layout */ + * 4. proc1: to apply a stale layout + */ if (it && it->d.lustre.it_lock_mode != 0) { struct lustre_handle lockh; struct ldlm_lock *lock; @@ -2097,7 +2122,8 @@ int ll_process_config(struct lustre_cfg *lcfg) LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC); /* Note we have not called client_common_fill_super yet, so - proc fns must be able to handle that! */ + * proc fns must be able to handle that! + */ rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars, lcfg, sb); if (rc > 0) @@ -2146,7 +2172,8 @@ struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data, /* If the file is being opened after mknod() (normally due to NFS) * try to use the default stripe data from parent directory for - * allocating OST objects. Try to pass the parent FID to MDS. */ + * allocating OST objects. Try to pass the parent FID to MDS. + */ if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) && !ll_i2info(i2)->lli_has_smd) { struct ll_inode_info *lli = ll_i2info(i2); @@ -2237,7 +2264,8 @@ char *ll_get_fsname(struct super_block *sb, char *buf, int buflen) if (!buf) { /* this means the caller wants to use static buffer * and it doesn't care about race. Usually this is - * in error reporting path */ + * in error reporting path + */ buf = fsname_static; buflen = sizeof(fsname_static); } diff --git a/drivers/staging/lustre/lustre/llite/llite_mmap.c b/drivers/staging/lustre/lustre/llite/llite_mmap.c index a0a58fd06e24..d8c39fbcbdfe 100644 --- a/drivers/staging/lustre/lustre/llite/llite_mmap.c +++ b/drivers/staging/lustre/lustre/llite/llite_mmap.c @@ -151,8 +151,7 @@ ll_fault_io_init(struct vm_area_struct *vma, struct lu_env **env_ret, LASSERT(cio->cui_cl.cis_io == io); - /* mmap lock must be MANDATORY it has to cache - * pages. */ + /* mmap lock must be MANDATORY it has to cache pages. */ io->ci_lockreq = CILR_MANDATORY; cio->cui_fd = fd; } else { @@ -199,7 +198,8 @@ static int ll_page_mkwrite0(struct vm_area_struct *vma, struct page *vmpage, /* we grab lli_trunc_sem to exclude truncate case. * Otherwise, we could add dirty pages into osc cache - * while truncate is on-going. */ + * while truncate is on-going. + */ inode = ccc_object_inode(io->ci_obj); lli = ll_i2info(inode); down_read(&lli->lli_trunc_sem); @@ -220,7 +220,8 @@ static int ll_page_mkwrite0(struct vm_area_struct *vma, struct page *vmpage, /* page was truncated and lock was cancelled, return * ENODATA so that VM_FAULT_NOPAGE will be returned - * to handle_mm_fault(). */ + * to handle_mm_fault(). + */ if (result == 0) result = -ENODATA; } else if (!PageDirty(vmpage)) { @@ -313,7 +314,8 @@ static int ll_fault0(struct vm_area_struct *vma, struct vm_fault *vmf) result = cl_io_loop(env, io); /* ft_flags are only valid if we reached - * the call to filemap_fault */ + * the call to filemap_fault + */ if (vio->u.fault.fault.ft_flags_valid) fault_ret = vio->u.fault.fault.ft_flags; @@ -342,9 +344,10 @@ static int ll_fault(struct vm_area_struct *vma, struct vm_fault *vmf) int result; sigset_t set; - /* Only SIGKILL and SIGTERM is allowed for fault/nopage/mkwrite + /* Only SIGKILL and SIGTERM are allowed for fault/nopage/mkwrite * so that it can be killed by admin but not cause segfault by - * other signals. */ + * other signals. + */ set = cfs_block_sigsinv(sigmask(SIGKILL) | sigmask(SIGTERM)); restart: @@ -445,7 +448,8 @@ static void ll_vm_close(struct vm_area_struct *vma) } /* XXX put nice comment here. talk about __free_pte -> dirty pages and - * nopage's reference passing to the pte */ + * nopage's reference passing to the pte + */ int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last) { int rc = -ENOENT; diff --git a/drivers/staging/lustre/lustre/llite/llite_nfs.c b/drivers/staging/lustre/lustre/llite/llite_nfs.c index 9f64dd18f452..248441215794 100644 --- a/drivers/staging/lustre/lustre/llite/llite_nfs.c +++ b/drivers/staging/lustre/lustre/llite/llite_nfs.c @@ -105,7 +105,8 @@ struct inode *search_inode_for_lustre(struct super_block *sb, return ERR_PTR(rc); /* Because inode is NULL, ll_prep_md_op_data can not - * be used here. So we allocate op_data ourselves */ + * be used here. So we allocate op_data ourselves + */ op_data = kzalloc(sizeof(*op_data), GFP_NOFS); if (!op_data) return ERR_PTR(-ENOMEM); @@ -209,7 +210,8 @@ static int ll_nfs_get_name_filldir(struct dir_context *ctx, const char *name, unsigned type) { /* It is hack to access lde_fid for comparison with lgd_fid. - * So the input 'name' must be part of the 'lu_dirent'. */ + * So the input 'name' must be part of the 'lu_dirent'. + */ struct lu_dirent *lde = container_of0(name, struct lu_dirent, lde_name); struct ll_getname_data *lgd = container_of(ctx, struct ll_getname_data, ctx); diff --git a/drivers/staging/lustre/lustre/llite/lproc_llite.c b/drivers/staging/lustre/lustre/llite/lproc_llite.c index 4d2e4b2d3336..f5fe928f8c7a 100644 --- a/drivers/staging/lustre/lustre/llite/lproc_llite.c +++ b/drivers/staging/lustre/lustre/llite/lproc_llite.c @@ -345,7 +345,8 @@ static ssize_t max_read_ahead_whole_mb_store(struct kobject *kobj, return rc; /* Cap this at the current max readahead window size, the readahead - * algorithm does this anyway so it's pointless to set it larger. */ + * algorithm does this anyway so it's pointless to set it larger. + */ if (pages_number > sbi->ll_ra_info.ra_max_pages_per_file) { CERROR("can't set max_read_ahead_whole_mb more than max_read_ahead_per_file_mb: %lu\n", sbi->ll_ra_info.ra_max_pages_per_file >> (20 - PAGE_CACHE_SHIFT)); diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c index 7e62198c401c..3121458e9b8d 100644 --- a/drivers/staging/lustre/lustre/llite/namei.c +++ b/drivers/staging/lustre/lustre/llite/namei.c @@ -180,7 +180,8 @@ int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc, __u64 bits = lock->l_policy_data.l_inodebits.bits; /* Inode is set to lock->l_resource->lr_lvb_inode - * for mdc - bug 24555 */ + * for mdc - bug 24555 + */ LASSERT(!lock->l_ast_data); if (!inode) @@ -202,7 +203,8 @@ int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc, } /* For OPEN locks we differentiate between lock modes - * LCK_CR, LCK_CW, LCK_PR - bug 22891 */ + * LCK_CR, LCK_CW, LCK_PR - bug 22891 + */ if (bits & MDS_INODELOCK_OPEN) ll_have_md_lock(inode, &bits, lock->l_req_mode); @@ -285,7 +287,8 @@ __u32 ll_i2suppgid(struct inode *i) /* Pack the required supplementary groups into the supplied groups array. * If we don't need to use the groups from the target inode(s) then we * instead pack one or more groups from the user's supplementary group - * array in case it might be useful. Not needed if doing an MDS-side upcall. */ + * array in case it might be useful. Not needed if doing an MDS-side upcall. + */ void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2) { LASSERT(i1); @@ -388,7 +391,8 @@ static int ll_lookup_it_finish(struct ptlrpc_request *request, int rc = 0; /* NB 1 request reference will be taken away by ll_intent_lock() - * when I return */ + * when I return + */ CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it, it->d.lustre.it_disposition); if (!it_disposition(it, DISP_LOOKUP_NEG)) { @@ -399,13 +403,14 @@ static int ll_lookup_it_finish(struct ptlrpc_request *request, ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits); /* We used to query real size from OSTs here, but actually - this is not needed. For stat() calls size would be updated - from subsequent do_revalidate()->ll_inode_revalidate_it() in - 2.4 and - vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6 - Everybody else who needs correct file size would call - ll_glimpse_size or some equivalent themselves anyway. - Also see bug 7198. */ + * this is not needed. For stat() calls size would be updated + * from subsequent do_revalidate()->ll_inode_revalidate_it() in + * 2.4 and + * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6 + * Everybody else who needs correct file size would call + * ll_glimpse_size or some equivalent themselves anyway. + * Also see bug 7198. + */ } /* Only hash *de if it is unhashed (new dentry). @@ -422,8 +427,9 @@ static int ll_lookup_it_finish(struct ptlrpc_request *request, *de = alias; } else if (!it_disposition(it, DISP_LOOKUP_NEG) && !it_disposition(it, DISP_OPEN_CREATE)) { - /* With DISP_OPEN_CREATE dentry will - instantiated in ll_create_it. */ + /* With DISP_OPEN_CREATE dentry will be + * instantiated in ll_create_it. + */ LASSERT(!d_inode(*de)); d_instantiate(*de, inode); } @@ -672,7 +678,8 @@ static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it) /* We asked for a lock on the directory, but were granted a * lock on the inode. Since we finally have an inode pointer, - * stuff it in the lock. */ + * stuff it in the lock. + */ CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n", inode, inode->i_ino, inode->i_generation); ll_set_lock_data(sbi->ll_md_exp, inode, it, NULL); @@ -867,7 +874,8 @@ int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir) /* The MDS sent back the EA because we unlinked the last reference * to this file. Use this EA to unlink the objects on the OST. * It's opaque so we don't swab here; we leave it to obd_unpackmd() to - * check it is complete and sensible. */ + * check it is complete and sensible. + */ eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD, body->eadatasize); LASSERT(eadata); @@ -917,7 +925,8 @@ out: /* ll_unlink() doesn't update the inode with the new link count. * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there * is any lock existing. They will recycle dentries and inodes based upon locks - * too. b=20433 */ + * too. b=20433 + */ static int ll_unlink(struct inode *dir, struct dentry *dentry) { struct ptlrpc_request *request = NULL; diff --git a/drivers/staging/lustre/lustre/llite/rw.c b/drivers/staging/lustre/lustre/llite/rw.c index da71937a67a2..d685c8f67764 100644 --- a/drivers/staging/lustre/lustre/llite/rw.c +++ b/drivers/staging/lustre/lustre/llite/rw.c @@ -120,7 +120,8 @@ static struct ll_cl_context *ll_cl_init(struct file *file, /* this is too bad. Someone is trying to write the * page w/o holding inode mutex. This means we can - * add dirty pages into cache during truncate */ + * add dirty pages into cache during truncate + */ CERROR("Proc %s is dirtying page w/o inode lock, this will break truncate\n", current->comm); dump_stack(); @@ -239,7 +240,8 @@ int ll_prepare_write(struct file *file, struct page *vmpage, unsigned from, ll_cl_fini(lcc); } /* returning 0 in prepare assumes commit must be called - * afterwards */ + * afterwards + */ } else { result = PTR_ERR(lcc); } @@ -295,8 +297,8 @@ static void ll_ra_stats_inc_sbi(struct ll_sb_info *sbi, enum ra_stat which); * to get an ra budget that is larger than the remaining readahead pages * and reach here at exactly the same time. They will compute /a ret to * consume the remaining pages, but will fail at atomic_add_return() and - * get a zero ra window, although there is still ra space remaining. - Jay */ - + * get a zero ra window, although there is still ra space remaining. - Jay + */ static unsigned long ll_ra_count_get(struct ll_sb_info *sbi, struct ra_io_arg *ria, unsigned long pages) @@ -306,7 +308,8 @@ static unsigned long ll_ra_count_get(struct ll_sb_info *sbi, /* If read-ahead pages left are less than 1M, do not do read-ahead, * otherwise it will form small read RPC(< 1M), which hurt server - * performance a lot. */ + * performance a lot. + */ ret = min(ra->ra_max_pages - atomic_read(&ra->ra_cur_pages), pages); if (ret < 0 || ret < min_t(long, PTLRPC_MAX_BRW_PAGES, pages)) { ret = 0; @@ -323,7 +326,8 @@ static unsigned long ll_ra_count_get(struct ll_sb_info *sbi, * branch is more expensive than subtracting zero from the result. * * Strided read is left unaligned to avoid small fragments beyond - * the RPC boundary from needing an extra read RPC. */ + * the RPC boundary from needing an extra read RPC. + */ if (ria->ria_pages == 0) { long beyond_rpc = (ria->ria_start + ret) % PTLRPC_MAX_BRW_PAGES; @@ -514,13 +518,15 @@ static int ll_read_ahead_page(const struct lu_env *env, struct cl_io *io, /* Limit this to the blocksize instead of PTLRPC_BRW_MAX_SIZE, since we don't * know what the actual RPC size is. If this needs to change, it makes more * sense to tune the i_blkbits value for the file based on the OSTs it is - * striped over, rather than having a constant value for all files here. */ + * striped over, rather than having a constant value for all files here. + */ /* RAS_INCREASE_STEP should be (1UL << (inode->i_blkbits - PAGE_CACHE_SHIFT)). * Temporarily set RAS_INCREASE_STEP to 1MB. After 4MB RPC is enabled * by default, this should be adjusted corresponding with max_read_ahead_mb * and max_read_ahead_per_file_mb otherwise the readahead budget can be used - * up quickly which will affect read performance significantly. See LU-2816 */ + * up quickly which will affect read performance significantly. See LU-2816 + */ #define RAS_INCREASE_STEP(inode) (ONE_MB_BRW_SIZE >> PAGE_CACHE_SHIFT) static inline int stride_io_mode(struct ll_readahead_state *ras) @@ -599,7 +605,8 @@ static int ras_inside_ra_window(unsigned long idx, struct ra_io_arg *ria) /* If ria_length == ria_pages, it means non-stride I/O mode, * idx should always inside read-ahead window in this case * For stride I/O mode, just check whether the idx is inside - * the ria_pages. */ + * the ria_pages. + */ return ria->ria_length == 0 || ria->ria_length == ria->ria_pages || (idx >= ria->ria_stoff && (idx - ria->ria_stoff) % ria->ria_length < ria->ria_pages); @@ -633,11 +640,13 @@ static int ll_read_ahead_pages(const struct lu_env *env, } else if (stride_ria) { /* If it is not in the read-ahead window, and it is * read-ahead mode, then check whether it should skip - * the stride gap */ + * the stride gap + */ pgoff_t offset; /* FIXME: This assertion only is valid when it is for * forward read-ahead, it will be fixed when backward - * read-ahead is implemented */ + * read-ahead is implemented + */ LASSERTF(page_idx > ria->ria_stoff, "Invalid page_idx %lu rs %lu re %lu ro %lu rl %lu rp %lu\n", page_idx, ria->ria_start, ria->ria_end, ria->ria_stoff, @@ -720,7 +729,8 @@ int ll_readahead(const struct lu_env *env, struct cl_io *io, */ /* Note: we only trim the RPC, instead of extending the RPC * to the boundary, so to avoid reading too much pages during - * random reading. */ + * random reading. + */ rpc_boundary = (end + 1) & (~(PTLRPC_MAX_BRW_PAGES - 1)); if (rpc_boundary > 0) rpc_boundary--; @@ -773,7 +783,8 @@ int ll_readahead(const struct lu_env *env, struct cl_io *io, * the ras we need to go back and update the ras so that the * next read-ahead tries from where we left off. we only do so * if the region we failed to issue read-ahead on is still ahead - * of the app and behind the next index to start read-ahead from */ + * of the app and behind the next index to start read-ahead from + */ CDEBUG(D_READA, "ra_end %lu end %lu stride end %lu \n", ra_end, end, ria->ria_end); @@ -879,7 +890,8 @@ static void ras_update_stride_detector(struct ll_readahead_state *ras, } /* Stride Read-ahead window will be increased inc_len according to - * stride I/O pattern */ + * stride I/O pattern + */ static void ras_stride_increase_window(struct ll_readahead_state *ras, struct ll_ra_info *ra, unsigned long inc_len) @@ -950,7 +962,8 @@ void ras_update(struct ll_sb_info *sbi, struct inode *inode, * or reads to some other part of the file. Secondly if we get a * read-ahead miss that we think we've previously issued. This can * be a symptom of there being so many read-ahead pages that the VM is - * reclaiming it before we get to it. */ + * reclaiming it before we get to it. + */ if (!index_in_window(index, ras->ras_last_readpage, 8, 8)) { zero = 1; ll_ra_stats_inc_sbi(sbi, RA_STAT_DISTANT_READPAGE); @@ -967,7 +980,8 @@ void ras_update(struct ll_sb_info *sbi, struct inode *inode, * file up to ra_max_pages_per_file. This is simply a best effort * and only occurs once per open file. Normal RA behavior is reverted * to for subsequent IO. The mmap case does not increment - * ras_requests and thus can never trigger this behavior. */ + * ras_requests and thus can never trigger this behavior. + */ if (ras->ras_requests == 2 && !ras->ras_request_index) { __u64 kms_pages; @@ -1013,14 +1027,16 @@ void ras_update(struct ll_sb_info *sbi, struct inode *inode, stride_io_mode(ras)) { /*If stride-RA hit cache miss, the stride dector *will not be reset to avoid the overhead of - *redetecting read-ahead mode */ + *redetecting read-ahead mode + */ if (index != ras->ras_last_readpage + 1) ras->ras_consecutive_pages = 0; ras_reset(inode, ras, index); RAS_CDEBUG(ras); } else { /* Reset both stride window and normal RA - * window */ + * window + */ ras_reset(inode, ras, index); ras->ras_consecutive_pages++; ras_stride_reset(ras); @@ -1029,7 +1045,8 @@ void ras_update(struct ll_sb_info *sbi, struct inode *inode, } else if (stride_io_mode(ras)) { /* If this is contiguous read but in stride I/O mode * currently, check whether stride step still is valid, - * if invalid, it will reset the stride ra window*/ + * if invalid, it will reset the stride ra window + */ if (!index_in_stride_window(ras, index)) { /* Shrink stride read-ahead window to be zero */ ras_stride_reset(ras); @@ -1045,7 +1062,8 @@ void ras_update(struct ll_sb_info *sbi, struct inode *inode, if (stride_io_mode(ras)) /* Since stride readahead is sensitive to the offset * of read-ahead, so we use original offset here, - * instead of ras_window_start, which is RPC aligned */ + * instead of ras_window_start, which is RPC aligned + */ ras->ras_next_readahead = max(index, ras->ras_next_readahead); else ras->ras_next_readahead = max(ras->ras_window_start, @@ -1053,7 +1071,8 @@ void ras_update(struct ll_sb_info *sbi, struct inode *inode, RAS_CDEBUG(ras); /* Trigger RA in the mmap case where ras_consecutive_requests - * is not incremented and thus can't be used to trigger RA */ + * is not incremented and thus can't be used to trigger RA + */ if (!ras->ras_window_len && ras->ras_consecutive_pages == 4) { ras->ras_window_len = RAS_INCREASE_STEP(inode); goto out_unlock; @@ -1151,14 +1170,16 @@ int ll_writepage(struct page *vmpage, struct writeback_control *wbc) /* Flush page failed because the extent is being written out. * Wait for the write of extent to be finished to avoid * breaking kernel which assumes ->writepage should mark - * PageWriteback or clean the page. */ + * PageWriteback or clean the page. + */ result = cl_sync_file_range(inode, offset, offset + PAGE_CACHE_SIZE - 1, CL_FSYNC_LOCAL, 1); if (result > 0) { /* actually we may have written more than one page. * decreasing this page because the caller will count - * it. */ + * it. + */ wbc->nr_to_write -= result - 1; result = 0; } @@ -1208,7 +1229,8 @@ int ll_writepages(struct address_space *mapping, struct writeback_control *wbc) if (sbi->ll_umounting) /* if the mountpoint is being umounted, all pages have to be * evicted to avoid hitting LBUG when truncate_inode_pages() - * is called later on. */ + * is called later on. + */ ignore_layout = 1; result = cl_sync_file_range(inode, start, end, mode, ignore_layout); if (result > 0) { diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c index 6167c9d7714b..89fd5139feea 100644 --- a/drivers/staging/lustre/lustre/llite/rw26.c +++ b/drivers/staging/lustre/lustre/llite/rw26.c @@ -145,7 +145,8 @@ static int ll_releasepage(struct page *vmpage, RELEASEPAGE_ARG_TYPE gfp_mask) /* If we can't allocate an env we won't call cl_page_put() * later on which further means it's impossible to drop * page refcount by cl_page, so ask kernel to not free - * this page. */ + * this page. + */ return 0; page = cl_vmpage_page(vmpage, obj); @@ -212,7 +213,8 @@ static inline int ll_get_user_pages(int rw, unsigned long user_addr, } /* ll_free_user_pages - tear down page struct array - * @pages: array of page struct pointers underlying target buffer */ + * @pages: array of page struct pointers underlying target buffer + */ static void ll_free_user_pages(struct page **pages, int npages, int do_dirty) { int i; @@ -266,7 +268,8 @@ ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io, do_io = true; /* check the page type: if the page is a host page, then do - * write directly */ + * write directly + */ if (clp->cp_type == CPT_CACHEABLE) { struct page *vmpage = cl_page_vmpage(env, clp); struct page *src_page; @@ -284,14 +287,16 @@ ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io, kunmap_atomic(src); /* make sure page will be added to the transfer by - * cl_io_submit()->...->vvp_page_prep_write(). */ + * cl_io_submit()->...->vvp_page_prep_write(). + */ if (rw == WRITE) set_page_dirty(vmpage); if (rw == READ) { /* do not issue the page for read, since it * may reread a ra page which has NOT uptodate - * bit set. */ + * bit set. + */ cl_page_disown(env, io, clp); do_io = false; } @@ -359,7 +364,8 @@ static ssize_t ll_direct_IO_26_seg(const struct lu_env *env, struct cl_io *io, * kmalloc limit. We need to fit all of the brw_page structs, each one * representing PAGE_SIZE worth of user data, into a single buffer, and * then truncate this to be a full-sized RPC. For 4kB PAGE_SIZE this is - * up to 22MB for 128kB kmalloc and up to 682MB for 4MB kmalloc. */ + * up to 22MB for 128kB kmalloc and up to 682MB for 4MB kmalloc. + */ #define MAX_DIO_SIZE ((MAX_MALLOC / sizeof(struct brw_page) * PAGE_CACHE_SIZE) & \ ~(DT_MAX_BRW_SIZE - 1)) static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter, @@ -433,7 +439,8 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter, * for the request, shrink it to a smaller * PAGE_SIZE multiple and try again. * We should always be able to kmalloc for a - * page worth of page pointers = 4MB on i386. */ + * page worth of page pointers = 4MB on i386. + */ if (result == -ENOMEM && size > (PAGE_CACHE_SIZE / sizeof(*pages)) * PAGE_CACHE_SIZE) { diff --git a/drivers/staging/lustre/lustre/llite/statahead.c b/drivers/staging/lustre/lustre/llite/statahead.c index db220f2f88d2..d4a3722fe728 100644 --- a/drivers/staging/lustre/lustre/llite/statahead.c +++ b/drivers/staging/lustre/lustre/llite/statahead.c @@ -494,7 +494,8 @@ static void ll_sai_put(struct ll_statahead_info *sai) if (unlikely(atomic_read(&sai->sai_refcount) > 0)) { /* It is race case, the interpret callback just hold - * a reference count */ + * a reference count + */ spin_unlock(&lli->lli_sa_lock); return; } @@ -631,7 +632,8 @@ static void ll_post_statahead(struct ll_statahead_info *sai) LASSERT(fid_is_zero(&minfo->mi_data.op_fid2)); /* XXX: No fid in reply, this is probably cross-ref case. - * SA can't handle it yet. */ + * SA can't handle it yet. + */ if (body->valid & OBD_MD_MDS) { rc = -EAGAIN; goto out; @@ -672,7 +674,8 @@ out: /* The "ll_sa_entry_to_stated()" will drop related ldlm ibits lock * reference count by calling "ll_intent_drop_lock()" in spite of the * above operations failed or not. Do not worry about calling - * "ll_intent_drop_lock()" more than once. */ + * "ll_intent_drop_lock()" more than once. + */ rc = ll_sa_entry_to_stated(sai, entry, rc < 0 ? SA_ENTRY_INVA : SA_ENTRY_SUCC); if (rc == 0 && entry->se_index == sai->sai_index_wait) @@ -698,7 +701,8 @@ static int ll_statahead_interpret(struct ptlrpc_request *req, /* release ibits lock ASAP to avoid deadlock when statahead * thread enqueues lock on parent in readdir and another * process enqueues lock on child with parent lock held, eg. - * unlink. */ + * unlink. + */ handle = it->d.lustre.it_lock_handle; ll_intent_drop_lock(it); } @@ -736,7 +740,8 @@ static int ll_statahead_interpret(struct ptlrpc_request *req, /* Release the async ibits lock ASAP to avoid deadlock * when statahead thread tries to enqueue lock on parent * for readpage and other tries to enqueue lock on child - * with parent's lock held, for example: unlink. */ + * with parent's lock held, for example: unlink. + */ entry->se_handle = handle; wakeup = list_empty(&sai->sai_entries_received); list_add_tail(&entry->se_list, @@ -947,7 +952,8 @@ static int ll_agl_thread(void *arg) if (thread_is_init(thread)) /* If someone else has changed the thread state * (e.g. already changed to SVC_STOPPING), we can't just - * blindly overwrite that setting. */ + * blindly overwrite that setting. + */ thread_set_flags(thread, SVC_RUNNING); spin_unlock(&plli->lli_agl_lock); wake_up(&thread->t_ctl_waitq); @@ -963,7 +969,8 @@ static int ll_agl_thread(void *arg) spin_lock(&plli->lli_agl_lock); /* The statahead thread maybe help to process AGL entries, - * so check whether list empty again. */ + * so check whether list empty again. + */ if (!list_empty(&sai->sai_entries_agl)) { clli = list_entry(sai->sai_entries_agl.next, struct ll_inode_info, lli_agl_list); @@ -1048,7 +1055,8 @@ static int ll_statahead_thread(void *arg) if (thread_is_init(thread)) /* If someone else has changed the thread state * (e.g. already changed to SVC_STOPPING), we can't just - * blindly overwrite that setting. */ + * blindly overwrite that setting. + */ thread_set_flags(thread, SVC_RUNNING); spin_unlock(&plli->lli_sa_lock); wake_up(&thread->t_ctl_waitq); @@ -1136,7 +1144,8 @@ interpret_it: /* If no window for metadata statahead, but there are * some AGL entries to be triggered, then try to help - * to process the AGL entries. */ + * to process the AGL entries. + */ if (sa_sent_full(sai)) { spin_lock(&plli->lli_agl_lock); while (!list_empty(&sai->sai_entries_agl)) { @@ -1364,7 +1373,8 @@ static int is_first_dirent(struct inode *dir, struct dentry *dentry) hash = le64_to_cpu(ent->lde_hash); /* The ll_get_dir_page() can return any page containing - * the given hash which may be not the start hash. */ + * the given hash which may be not the start hash. + */ if (unlikely(hash < pos)) continue; @@ -1650,7 +1660,8 @@ int do_statahead_enter(struct inode *dir, struct dentry **dentryp, * but as soon as we expose the sai by attaching it to the lli that * default reference can be dropped by another thread calling * ll_stop_statahead. We need to take a local reference to protect - * the sai buffer while we intend to access it. */ + * the sai buffer while we intend to access it. + */ ll_sai_get(sai); lli->lli_sai = sai; @@ -1666,7 +1677,8 @@ int do_statahead_enter(struct inode *dir, struct dentry **dentryp, thread_set_flags(thread, SVC_STOPPED); thread_set_flags(&sai->sai_agl_thread, SVC_STOPPED); /* Drop both our own local reference and the default - * reference from allocation time. */ + * reference from allocation time. + */ ll_sai_put(sai); ll_sai_put(sai); LASSERT(!lli->lli_sai); diff --git a/drivers/staging/lustre/lustre/llite/super25.c b/drivers/staging/lustre/lustre/llite/super25.c index cd996f624dd3..63f090ab365c 100644 --- a/drivers/staging/lustre/lustre/llite/super25.c +++ b/drivers/staging/lustre/lustre/llite/super25.c @@ -99,7 +99,8 @@ static int __init init_lustre_lite(void) /* print an address of _any_ initialized kernel symbol from this * module, to allow debugging with gdb that doesn't support data - * symbols from modules.*/ + * symbols from modules. + */ CDEBUG(D_INFO, "Lustre client module (%p).\n", &lustre_super_operations); @@ -146,7 +147,8 @@ static int __init init_lustre_lite(void) cfs_get_random_bytes(seed, sizeof(seed)); /* Nodes with small feet have little entropy. The NID for this - * node gives the most entropy in the low bits */ + * node gives the most entropy in the low bits + */ for (i = 0;; i++) { if (LNetGetId(i, &lnet_id) == -ENOENT) break; diff --git a/drivers/staging/lustre/lustre/llite/symlink.c b/drivers/staging/lustre/lustre/llite/symlink.c index c2775b6e0009..4435a639bfec 100644 --- a/drivers/staging/lustre/lustre/llite/symlink.c +++ b/drivers/staging/lustre/lustre/llite/symlink.c @@ -59,7 +59,8 @@ static int ll_readlink_internal(struct inode *inode, *symname = lli->lli_symlink_name; /* If the total CDEBUG() size is larger than a page, it * will print a warning to the console, avoid this by - * printing just the last part of the symlink. */ + * printing just the last part of the symlink. + */ CDEBUG(D_INODE, "using cached symlink %s%.*s, len = %d\n", print_limit < symlen ? "..." : "", print_limit, (*symname) + symlen - print_limit, symlen); diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c index f856899f305a..cca4b6c6530a 100644 --- a/drivers/staging/lustre/lustre/llite/vvp_io.c +++ b/drivers/staging/lustre/lustre/llite/vvp_io.c @@ -78,7 +78,8 @@ static bool can_populate_pages(const struct lu_env *env, struct cl_io *io, case CIT_READ: case CIT_WRITE: /* don't need lock here to check lli_layout_gen as we have held - * extent lock and GROUP lock has to hold to swap layout */ + * extent lock and GROUP lock has to hold to swap layout + */ if (ll_layout_version_get(lli) != cio->cui_layout_gen) { io->ci_need_restart = 1; /* this will return application a short read/write */ @@ -134,7 +135,8 @@ static void vvp_io_fini(const struct lu_env *env, const struct cl_io_slice *ios) */ rc = ll_layout_restore(ccc_object_inode(obj)); /* if restore registration failed, no restart, - * we will return -ENODATA */ + * we will return -ENODATA + */ /* The layout will change after restore, so we need to * block on layout lock hold by the MDT * as MDT will not send new layout in lvb (see LU-3124) @@ -164,8 +166,7 @@ static void vvp_io_fini(const struct lu_env *env, const struct cl_io_slice *ios) DFID" layout changed from %d to %d.\n", PFID(lu_object_fid(&obj->co_lu)), cio->cui_layout_gen, gen); - /* today successful restore is the only possible - * case */ + /* today successful restore is the only possible case */ /* restore was done, clear restoring state */ ll_i2info(ccc_object_inode(obj))->lli_flags &= ~LLIF_FILE_RESTORING; @@ -456,7 +457,8 @@ static void vvp_io_setattr_end(const struct lu_env *env, if (cl_io_is_trunc(io)) /* Truncate in memory pages - they must be clean pages - * because osc has already notified to destroy osc_extents. */ + * because osc has already notified to destroy osc_extents. + */ vvp_do_vmtruncate(inode, io->u.ci_setattr.sa_attr.lvb_size); inode_unlock(inode); @@ -529,7 +531,8 @@ static int vvp_io_read_start(const struct lu_env *env, vio->u.splice.cui_flags); /* LU-1109: do splice read stripe by stripe otherwise if it * may make nfsd stuck if this read occupied all internal pipe - * buffers. */ + * buffers. + */ io->ci_continue = 0; break; default: @@ -689,13 +692,15 @@ static int vvp_io_fault_start(const struct lu_env *env, size = i_size_read(inode); /* Though we have already held a cl_lock upon this page, but - * it still can be truncated locally. */ + * it still can be truncated locally. + */ if (unlikely((vmpage->mapping != inode->i_mapping) || (page_offset(vmpage) > size))) { CDEBUG(D_PAGE, "llite: fault and truncate race happened!\n"); /* return +1 to stop cl_io_loop() and ll_fault() will catch - * and retry. */ + * and retry. + */ result = 1; goto out; } @@ -736,7 +741,8 @@ static int vvp_io_fault_start(const struct lu_env *env, } /* if page is going to be written, we should add this page into cache - * earlier. */ + * earlier. + */ if (fio->ft_mkwrite) { wait_on_page_writeback(vmpage); if (set_page_dirty(vmpage)) { @@ -750,7 +756,8 @@ static int vvp_io_fault_start(const struct lu_env *env, /* Do not set Dirty bit here so that in case IO is * started before the page is really made dirty, we - * still have chance to detect it. */ + * still have chance to detect it. + */ result = cl_page_cache_add(env, io, page, CRT_WRITE); LASSERT(cl_page_is_owned(page, io)); @@ -803,7 +810,8 @@ static int vvp_io_fsync_start(const struct lu_env *env, { /* we should mark TOWRITE bit to each dirty page in radix tree to * verify pages have been written, but this is difficult because of - * race. */ + * race. + */ return 0; } @@ -1153,7 +1161,8 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj, count = io->u.ci_rw.crw_count; /* "If nbyte is 0, read() will return 0 and have no other - * results." -- Single Unix Spec */ + * results." -- Single Unix Spec + */ if (count == 0) result = 1; else @@ -1173,20 +1182,23 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj, /* ignore layout change for generic CIT_MISC but not for glimpse. * io context for glimpse must set ci_verify_layout to true, - * see cl_glimpse_size0() for details. */ + * see cl_glimpse_size0() for details. + */ if (io->ci_type == CIT_MISC && !io->ci_verify_layout) io->ci_ignore_layout = 1; /* Enqueue layout lock and get layout version. We need to do this * even for operations requiring to open file, such as read and write, - * because it might not grant layout lock in IT_OPEN. */ + * because it might not grant layout lock in IT_OPEN. + */ if (result == 0 && !io->ci_ignore_layout) { result = ll_layout_refresh(inode, &cio->cui_layout_gen); if (result == -ENOENT) /* If the inode on MDS has been removed, but the objects * on OSTs haven't been destroyed (async unlink), layout * fetch will return -ENOENT, we'd ignore this error - * and continue with dirty flush. LU-3230. */ + * and continue with dirty flush. LU-3230. + */ result = 0; if (result < 0) CERROR("%s: refresh file layout " DFID " error %d.\n", diff --git a/drivers/staging/lustre/lustre/llite/vvp_object.c b/drivers/staging/lustre/lustre/llite/vvp_object.c index 8d7aa7463c00..03c887d8ed83 100644 --- a/drivers/staging/lustre/lustre/llite/vvp_object.c +++ b/drivers/staging/lustre/lustre/llite/vvp_object.c @@ -137,7 +137,8 @@ static int vvp_conf_set(const struct lu_env *env, struct cl_object *obj, * page may be stale due to layout change, and the process * will never be notified. * This operation is expensive but mmap processes have to pay - * a price themselves. */ + * a price themselves. + */ unmap_mapping_range(conf->coc_inode->i_mapping, 0, OBD_OBJECT_EOF, 0); diff --git a/drivers/staging/lustre/lustre/llite/vvp_page.c b/drivers/staging/lustre/lustre/llite/vvp_page.c index f254ad5f947f..f0b26e395752 100644 --- a/drivers/staging/lustre/lustre/llite/vvp_page.c +++ b/drivers/staging/lustre/lustre/llite/vvp_page.c @@ -232,7 +232,8 @@ static int vvp_page_prep_write(const struct lu_env *env, LASSERT(!PageDirty(vmpage)); /* ll_writepage path is not a sync write, so need to set page writeback - * flag */ + * flag + */ if (!pg->cp_sync_io) set_page_writeback(vmpage); @@ -356,15 +357,15 @@ static int vvp_page_make_ready(const struct lu_env *env, lock_page(vmpage); if (clear_page_dirty_for_io(vmpage)) { LASSERT(pg->cp_state == CPS_CACHED); - /* This actually clears the dirty bit in the radix - * tree. */ + /* This actually clears the dirty bit in the radix tree. */ set_page_writeback(vmpage); vvp_write_pending(cl2ccc(slice->cpl_obj), cl2ccc_page(slice)); CL_PAGE_HEADER(D_PAGE, env, pg, "readied\n"); } else if (pg->cp_state == CPS_PAGEOUT) { /* is it possible for osc_flush_async_page() to already - * make it ready? */ + * make it ready? + */ result = -EALREADY; } else { CL_PAGE_DEBUG(D_ERROR, env, pg, "Unexpecting page state %d.\n", diff --git a/drivers/staging/lustre/lustre/llite/xattr.c b/drivers/staging/lustre/lustre/llite/xattr.c index 8ccbf26a7f08..c34df373df77 100644 --- a/drivers/staging/lustre/lustre/llite/xattr.c +++ b/drivers/staging/lustre/lustre/llite/xattr.c @@ -237,7 +237,8 @@ int ll_setxattr(struct dentry *dentry, const char *name, /* Attributes that are saved via getxattr will always have * the stripe_offset as 0. Instead, the MDS should be - * allowed to pick the starting OST index. b=17846 */ + * allowed to pick the starting OST index. b=17846 + */ if (lump && lump->lmm_stripe_offset == 0) lump->lmm_stripe_offset = -1; @@ -480,7 +481,8 @@ ssize_t ll_getxattr(struct dentry *dentry, const char *name, if (size == 0 && S_ISDIR(inode->i_mode)) { /* XXX directory EA is fix for now, optimize to save - * RPC transfer */ + * RPC transfer + */ rc = sizeof(struct lov_user_md); goto out; } @@ -495,7 +497,8 @@ ssize_t ll_getxattr(struct dentry *dentry, const char *name, } } else { /* LSM is present already after lookup/getattr call. - * we need to grab layout lock once it is implemented */ + * we need to grab layout lock once it is implemented + */ rc = obd_packmd(ll_i2dtexp(inode), &lmm, lsm); lmmsize = rc; } @@ -508,7 +511,8 @@ ssize_t ll_getxattr(struct dentry *dentry, const char *name, /* used to call ll_get_max_mdsize() forward to get * the maximum buffer size, while some apps (such as * rsync 3.0.x) care much about the exact xattr value - * size */ + * size + */ rc = lmmsize; goto out; } @@ -524,7 +528,8 @@ ssize_t ll_getxattr(struct dentry *dentry, const char *name, memcpy(lump, lmm, lmmsize); /* do not return layout gen for getxattr otherwise it would * confuse tar --xattr by recognizing layout gen as stripe - * offset when the file is restored. See LU-2809. */ + * offset when the file is restored. See LU-2809. + */ lump->lmm_layout_gen = 0; rc = lmmsize; diff --git a/drivers/staging/lustre/lustre/llite/xattr_cache.c b/drivers/staging/lustre/lustre/llite/xattr_cache.c index fe8df91de8af..460b7c543e33 100644 --- a/drivers/staging/lustre/lustre/llite/xattr_cache.c +++ b/drivers/staging/lustre/lustre/llite/xattr_cache.c @@ -23,7 +23,8 @@ */ struct ll_xattr_entry { struct list_head xe_list; /* protected with - * lli_xattrs_list_rwsem */ + * lli_xattrs_list_rwsem + */ char *xe_name; /* xattr name, \0-terminated */ char *xe_value; /* xattr value */ unsigned xe_namelen; /* strlen(xe_name) + 1 */ @@ -280,7 +281,8 @@ static int ll_xattr_find_get_lock(struct inode *inode, mutex_lock(&lli->lli_xattrs_enq_lock); /* inode may have been shrunk and recreated, so data is gone, match lock - * only when data exists. */ + * only when data exists. + */ if (ll_xattr_cache_valid(lli)) { /* Try matching first. */ mode = ll_take_md_lock(inode, MDS_INODELOCK_XATTR, &lockh, 0, -- 2.20.1