return 0;
}
+/*
+ * Helper function to extract CoW extent size hint from inode.
+ * Between the extent size hint and the CoW extent size hint, we
+ * return the greater of the two. If the value is zero (automatic),
+ * use the default size.
+ */
+xfs_extlen_t
+xfs_get_cowextsz_hint(
+ struct xfs_inode *ip)
+{
+ xfs_extlen_t a, b;
+
+ a = 0;
+ if (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE)
+ a = ip->i_d.di_cowextsize;
+ b = xfs_get_extsz_hint(ip);
+
+ a = max(a, b);
+ if (a == 0)
+ return XFS_DEFAULT_COWEXTSZ_HINT;
+ return a;
+}
+
/*
* These two are wrapper routines around the xfs_ilock() routine used to
* centralize some grungy code. They are used in places that wish to lock the
if (di_flags2 & XFS_DIFLAG2_ANY) {
if (di_flags2 & XFS_DIFLAG2_DAX)
flags |= FS_XFLAG_DAX;
+ if (di_flags2 & XFS_DIFLAG2_COWEXTSIZE)
+ flags |= FS_XFLAG_COWEXTSIZE;
}
if (has_attr)
ip->i_d.di_nextents = 0;
ASSERT(ip->i_d.di_nblocks == 0);
- tv = current_fs_time(mp->m_super);
+ tv = current_time(inode);
inode->i_mtime = tv;
inode->i_atime = tv;
inode->i_ctime = tv;
if (ip->i_d.di_version == 3) {
inode->i_version = 1;
ip->i_d.di_flags2 = 0;
+ ip->i_d.di_cowextsize = 0;
ip->i_d.di_crtime.t_sec = (__int32_t)tv.tv_sec;
ip->i_d.di_crtime.t_nsec = (__int32_t)tv.tv_nsec;
}
ip->i_d.di_flags |= di_flags;
ip->i_d.di_flags2 |= di_flags2;
}
+ if (pip &&
+ (pip->i_d.di_flags2 & XFS_DIFLAG2_ANY) &&
+ pip->i_d.di_version == 3 &&
+ ip->i_d.di_version == 3) {
+ if (pip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE) {
+ ip->i_d.di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
+ ip->i_d.di_cowextsize = pip->i_d.di_cowextsize;
+ }
+ }
/* FALLTHROUGH */
case S_IFLNK:
ip->i_d.di_format = XFS_DINODE_FMT_EXTENTS;
/*
* Clear the reflink flag if we truncated everything.
*/
- if (ip->i_d.di_nblocks == 0 && xfs_is_reflink_inode(ip))
+ if (ip->i_d.di_nblocks == 0 && xfs_is_reflink_inode(ip)) {
ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
+ xfs_inode_clear_cowblocks_tag(ip);
+ }
/*
* Always re-log the inode so that our permanent transaction can keep
/*
* Log the inode size first to prevent stale data exposure in the event
* of a system crash before the truncate completes. See the related
- * comment in xfs_setattr_size() for details.
+ * comment in xfs_vn_setattr_size() for details.
*/
ip->i_d.di_size = 0;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);