*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
*/
#include <linux/sched.h>
#include <linux/buffer_head.h>
#include <linux/crc32.h>
#include <linux/gfs2_ondisk.h>
+#include <linux/bio.h>
+#include <linux/lm_interface.h>
#include "gfs2.h"
-#include "lm_interface.h"
#include "incore.h"
#include "bmap.h"
#include "dir.h"
-#include "format.h"
#include "glock.h"
#include "glops.h"
#include "inode.h"
#include "rgrp.h"
#include "super.h"
#include "trans.h"
-#include "unlinked.h"
#include "util.h"
+static const u32 gfs2_old_fs_formats[] = {
+ 0
+};
+
+static const u32 gfs2_old_multihost_formats[] = {
+ 0
+};
+
/**
* gfs2_tune_init - Fill a gfs2_tune structure with default values
* @gt: tune
gt->gt_recoverd_secs = 60;
gt->gt_logd_secs = 1;
gt->gt_quotad_secs = 5;
- gt->gt_inoded_secs = 15;
gt->gt_quota_simul_sync = 64;
gt->gt_quota_warn_period = 10;
gt->gt_quota_scale_num = 1;
gt->gt_atime_quantum = 3600;
gt->gt_new_files_jdata = 0;
gt->gt_new_files_directio = 0;
- gt->gt_max_atomic_write = 4 << 20;
gt->gt_max_readahead = 1 << 18;
gt->gt_lockdump_size = 131072;
gt->gt_stall_secs = 600;
gt->gt_complain_secs = 10;
gt->gt_reclaim_limit = 5000;
gt->gt_entries_per_readdir = 32;
- gt->gt_prefetch_secs = 10;
- gt->gt_greedy_default = HZ / 10;
- gt->gt_greedy_quantum = HZ / 40;
- gt->gt_greedy_max = HZ / 4;
gt->gt_statfs_quantum = 30;
gt->gt_statfs_slow = 0;
}
* changed.
*/
-int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb *sb, int silent)
+int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent)
{
unsigned int x;
return 0;
}
+
+static int end_bio_io_page(struct bio *bio, unsigned int bytes_done, int error)
+{
+ struct page *page = bio->bi_private;
+ if (bio->bi_size)
+ return 1;
+
+ if (!error)
+ SetPageUptodate(page);
+ else
+ printk(KERN_WARNING "gfs2: error %d reading superblock\n", error);
+ unlock_page(page);
+ return 0;
+}
+
+/**
+ * gfs2_read_super - Read the gfs2 super block from disk
+ * @sb: The VFS super block
+ * @sector: The location of the super block
+ *
+ * This uses the bio functions to read the super block from disk
+ * because we want to be 100% sure that we never read cached data.
+ * A super block is read twice only during each GFS2 mount and is
+ * never written to by the filesystem. The first time its read no
+ * locks are held, and the only details which are looked at are those
+ * relating to the locking protocol. Once locking is up and working,
+ * the sb is read again under the lock to establish the location of
+ * the master directory (contains pointers to journals etc) and the
+ * root directory.
+ *
+ * Returns: A page containing the sb or NULL
+ */
+
+struct page *gfs2_read_super(struct super_block *sb, sector_t sector)
+{
+ struct page *page;
+ struct bio *bio;
+
+ page = alloc_page(GFP_KERNEL);
+ if (unlikely(!page))
+ return NULL;
+
+ ClearPageUptodate(page);
+ ClearPageDirty(page);
+ lock_page(page);
+
+ bio = bio_alloc(GFP_KERNEL, 1);
+ if (unlikely(!bio)) {
+ __free_page(page);
+ return NULL;
+ }
+
+ bio->bi_sector = sector * (sb->s_blocksize >> 9);
+ bio->bi_bdev = sb->s_bdev;
+ bio_add_page(bio, page, PAGE_SIZE, 0);
+
+ bio->bi_end_io = end_bio_io_page;
+ bio->bi_private = page;
+ submit_bio(READ_SYNC | (1 << BIO_RW_META), bio);
+ wait_on_page_locked(page);
+ bio_put(bio);
+ if (!PageUptodate(page)) {
+ __free_page(page);
+ return NULL;
+ }
+ return page;
+}
+
/**
* gfs2_read_sb - Read super block
* @sdp: The GFS2 superblock
int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent)
{
- struct buffer_head *bh;
- uint32_t hash_blocks, ind_blocks, leaf_blocks;
- uint32_t tmp_blocks;
+ u32 hash_blocks, ind_blocks, leaf_blocks;
+ u32 tmp_blocks;
unsigned int x;
int error;
+ struct page *page;
+ char *sb;
- error = gfs2_meta_read(gl, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift,
- DIO_FORCE | DIO_START | DIO_WAIT, &bh);
- if (error) {
+ page = gfs2_read_super(sdp->sd_vfs, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift);
+ if (!page) {
if (!silent)
fs_err(sdp, "can't read superblock\n");
- return error;
+ return -EIO;
}
-
- gfs2_assert(sdp, sizeof(struct gfs2_sb) <= bh->b_size);
- gfs2_sb_in(&sdp->sd_sb, bh->b_data);
- brelse(bh);
+ sb = kmap(page);
+ gfs2_sb_in(&sdp->sd_sb, sb);
+ kunmap(page);
+ __free_page(page);
error = gfs2_check_sb(sdp, &sdp->sd_sb, silent);
if (error)
GFS2_BASIC_BLOCK_SHIFT;
sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
sdp->sd_diptrs = (sdp->sd_sb.sb_bsize -
- sizeof(struct gfs2_dinode)) / sizeof(uint64_t);
+ sizeof(struct gfs2_dinode)) / sizeof(u64);
sdp->sd_inptrs = (sdp->sd_sb.sb_bsize -
- sizeof(struct gfs2_meta_header)) / sizeof(uint64_t);
+ sizeof(struct gfs2_meta_header)) / sizeof(u64);
sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header);
sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2;
sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1;
- sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(uint64_t);
- sdp->sd_ut_per_block = (sdp->sd_sb.sb_bsize -
- sizeof(struct gfs2_meta_header)) /
- sizeof(struct gfs2_unlinked_tag);
+ sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64);
sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize -
sizeof(struct gfs2_meta_header)) /
- sizeof(struct gfs2_quota_change);
+ sizeof(struct gfs2_quota_change);
/* Compute maximum reservation required to add a entry to a directory */
- hash_blocks = DIV_ROUND_UP(sizeof(uint64_t) * (1 << GFS2_DIR_MAX_DEPTH),
+ hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH),
sdp->sd_jbsize);
ind_blocks = 0;
sizeof(struct gfs2_dinode);
sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs;
for (x = 2;; x++) {
- uint64_t space, d;
- uint32_t m;
+ u64 space, d;
+ u32 m;
space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs;
d = space;
sizeof(struct gfs2_dinode);
sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs;
for (x = 2;; x++) {
- uint64_t space, d;
- uint32_t m;
+ u64 space, d;
+ u32 m;
space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs;
d = space;
int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
{
- struct gfs2_inode *dip = sdp->sd_jindex->u.generic_ip;
+ struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex);
struct qstr name;
char buf[20];
struct gfs2_jdesc *jd;
mutex_lock(&sdp->sd_jindex_mutex);
for (;;) {
- error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED,
- GL_LOCAL_EXCL, ji_gh);
+ error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
if (error)
break;
name.len = sprintf(buf, "journal%u", sdp->sd_journals);
name.hash = gfs2_disk_hash(name.name, name.len);
- error = gfs2_dir_search(sdp->sd_jindex,
- &name, NULL, NULL);
+ error = gfs2_dir_search(sdp->sd_jindex, &name, NULL, NULL);
if (error == -ENOENT) {
error = 0;
break;
int gfs2_jdesc_check(struct gfs2_jdesc *jd)
{
- struct gfs2_inode *ip = jd->jd_inode->u.generic_ip;
- struct gfs2_sbd *sdp = ip->i_sbd;
+ struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
+ struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
int ar;
int error;
- if (ip->i_di.di_size < (8 << 20) ||
- ip->i_di.di_size > (1 << 30) ||
+ if (ip->i_di.di_size < (8 << 20) || ip->i_di.di_size > (1 << 30) ||
(ip->i_di.di_size & (sdp->sd_sb.sb_bsize - 1))) {
gfs2_consist_inode(ip);
return -EIO;
}
jd->jd_blocks = ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift;
- error = gfs2_write_alloc_required(ip,
- 0, ip->i_di.di_size,
- &ar);
+ error = gfs2_write_alloc_required(ip, 0, ip->i_di.di_size, &ar);
if (!error && ar) {
gfs2_consist_inode(ip);
error = -EIO;
int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
{
- struct gfs2_inode *ip = sdp->sd_jdesc->jd_inode->u.generic_ip;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
struct gfs2_glock *j_gl = ip->i_gl;
struct gfs2_holder t_gh;
- struct gfs2_log_header head;
+ struct gfs2_log_header_host head;
int error;
- error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED,
- GL_LOCAL_EXCL, &t_gh);
+ error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh);
if (error)
return error;
gfs2_meta_cache_flush(ip);
- j_gl->gl_ops->go_inval(j_gl, DIO_METADATA | DIO_DATA);
+ j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
error = gfs2_find_jhead(sdp->sd_jdesc, &head);
if (error)
sdp->sd_log_sequence = head.lh_sequence + 1;
gfs2_log_pointers_init(sdp, head.lh_blkno);
- error = gfs2_unlinked_init(sdp);
- if (error)
- goto fail;
error = gfs2_quota_init(sdp);
if (error)
- goto fail_unlinked;
+ goto fail;
set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags);
return 0;
- fail_unlinked:
- gfs2_unlinked_cleanup(sdp);
-
- fail:
+fail:
t_gh.gh_flags |= GL_NOCACHE;
gfs2_glock_dq_uninit(&t_gh);
struct gfs2_holder t_gh;
int error;
- gfs2_unlinked_dealloc(sdp);
gfs2_quota_sync(sdp);
gfs2_statfs_sync(sdp);
- error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED,
- GL_LOCAL_EXCL | GL_NOCACHE,
- &t_gh);
+ error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE,
+ &t_gh);
if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
return error;
if (t_gh.gh_gl)
gfs2_glock_dq_uninit(&t_gh);
- gfs2_unlinked_cleanup(sdp);
gfs2_quota_cleanup(sdp);
return error;
int gfs2_statfs_init(struct gfs2_sbd *sdp)
{
- struct gfs2_inode *m_ip = sdp->sd_statfs_inode->u.generic_ip;
- struct gfs2_statfs_change *m_sc = &sdp->sd_statfs_master;
- struct gfs2_inode *l_ip = sdp->sd_sc_inode->u.generic_ip;
- struct gfs2_statfs_change *l_sc = &sdp->sd_statfs_local;
+ struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode);
+ struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
+ struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode);
+ struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
struct buffer_head *m_bh, *l_bh;
struct gfs2_holder gh;
int error;
brelse(l_bh);
}
- out_m_bh:
+out_m_bh:
brelse(m_bh);
-
- out:
+out:
gfs2_glock_dq_uninit(&gh);
-
return 0;
}
-void gfs2_statfs_change(struct gfs2_sbd *sdp, int64_t total, int64_t free,
- int64_t dinodes)
+void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free,
+ s64 dinodes)
{
- struct gfs2_inode *l_ip = sdp->sd_sc_inode->u.generic_ip;
- struct gfs2_statfs_change *l_sc = &sdp->sd_statfs_local;
+ struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode);
+ struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
struct buffer_head *l_bh;
int error;
l_sc->sc_total += total;
l_sc->sc_free += free;
l_sc->sc_dinodes += dinodes;
- gfs2_statfs_change_out(l_sc, l_bh->b_data +
- sizeof(struct gfs2_dinode));
+ gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode));
spin_unlock(&sdp->sd_statfs_spin);
brelse(l_bh);
int gfs2_statfs_sync(struct gfs2_sbd *sdp)
{
- struct gfs2_inode *m_ip = sdp->sd_statfs_inode->u.generic_ip;
- struct gfs2_inode *l_ip = sdp->sd_sc_inode->u.generic_ip;
- struct gfs2_statfs_change *m_sc = &sdp->sd_statfs_master;
- struct gfs2_statfs_change *l_sc = &sdp->sd_statfs_local;
+ struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode);
+ struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode);
+ struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
+ struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
struct gfs2_holder gh;
struct buffer_head *m_bh, *l_bh;
int error;
spin_lock(&sdp->sd_statfs_spin);
gfs2_statfs_change_in(m_sc, m_bh->b_data +
- sizeof(struct gfs2_dinode));
+ sizeof(struct gfs2_dinode));
if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) {
spin_unlock(&sdp->sd_statfs_spin);
goto out_bh;
gfs2_trans_end(sdp);
- out_bh2:
+out_bh2:
brelse(l_bh);
-
- out_bh:
+out_bh:
brelse(m_bh);
-
- out:
+out:
gfs2_glock_dq_uninit(&gh);
-
return error;
}
* Returns: errno
*/
-int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change *sc)
+int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc)
{
- struct gfs2_statfs_change *m_sc = &sdp->sd_statfs_master;
- struct gfs2_statfs_change *l_sc = &sdp->sd_statfs_local;
+ struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
+ struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
spin_lock(&sdp->sd_statfs_spin);
*/
static int statfs_slow_fill(struct gfs2_rgrpd *rgd,
- struct gfs2_statfs_change *sc)
+ struct gfs2_statfs_change_host *sc)
{
gfs2_rgrp_verify(rgd);
sc->sc_total += rgd->rd_ri.ri_data;
* Returns: errno
*/
-int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change *sc)
+int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc)
{
struct gfs2_holder ri_gh;
struct gfs2_rgrpd *rgd_next;
int done;
int error = 0, err;
- memset(sc, 0, sizeof(struct gfs2_statfs_change));
+ memset(sc, 0, sizeof(struct gfs2_statfs_change_host));
gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL);
if (!gha)
return -ENOMEM;
gfs2_glock_dq_uninit(&ri_gh);
- out:
+out:
kfree(gha);
-
return error;
}
struct gfs2_jdesc *jd;
struct lfcc *lfcc;
LIST_HEAD(list);
- struct gfs2_log_header lh;
+ struct gfs2_log_header_host lh;
int error;
error = gfs2_jindex_hold(sdp, &ji_gh);
error = -ENOMEM;
goto out;
}
- ip = jd->jd_inode->u.generic_ip;
- error = gfs2_glock_nq_init(ip->i_gl,
- LM_ST_SHARED, 0,
- &lfcc->gh);
+ ip = GFS2_I(jd->jd_inode);
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh);
if (error) {
kfree(lfcc);
goto out;
if (error)
gfs2_glock_dq_uninit(t_gh);
- out:
+out:
while (!list_empty(&list)) {
lfcc = list_entry(list.next, struct lfcc, list);
list_del(&lfcc->list);
kfree(lfcc);
}
gfs2_glock_dq_uninit(&ji_gh);
-
return error;
}
projects / cascardo / linux.git / blobdiff