aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorJan Kara <jack@suse.cz>2012-07-03 16:45:29 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2012-07-22 23:58:34 +0400
commita1177825719ccef3f76ef39bbfd5ebb6087d53c7 (patch)
treeeb7a1137ea6438be224052f17c104cd040a10366
parentceed17236a7491b44ee2be21f56a41ab997cbe7d (diff)
quota: Move quota syncing to ->sync_fs method
Since the moment writes to quota files are using block device page cache and space for quota structures is reserved at the moment they are first accessed we have no reason to sync quota before inode writeback. In fact this order is now only harmful since quota information can easily change during inode writeback (either because conversion of delayed-allocated extents or simply because of allocation of new blocks for simple filesystems not using page_mkwrite). So move syncing of quota information after writeback of inodes into ->sync_fs method. This way we do not have to use ->quota_sync callback which is primarily intended for use by quotactl syscall anyway and we get rid of calling ->sync_fs() twice unnecessarily. We skip quota syncing for OCFS2 since it does proper quota journalling in all cases (unlike ext3, ext4, and reiserfs which also support legacy non-journalled quotas) and thus there are no dirty quota structures. CC: "Theodore Ts'o" <tytso@mit.edu> CC: Joel Becker <jlbec@evilplan.org> CC: reiserfs-devel@vger.kernel.org Acked-by: Steven Whitehouse <swhiteho@redhat.com> Acked-by: Dave Kleikamp <shaggy@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/ext2/super.c6
-rw-r--r--fs/ext3/super.c5
-rw-r--r--fs/ext4/super.c5
-rw-r--r--fs/gfs2/super.c2
-rw-r--r--fs/jfs/super.c5
-rw-r--r--fs/reiserfs/super.c5
-rw-r--r--fs/sync.c3
7 files changed, 28 insertions, 3 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index b3621cb7ea3..5df3d2d8169 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1184,6 +1184,12 @@ static int ext2_sync_fs(struct super_block *sb, int wait)
struct ext2_sb_info *sbi = EXT2_SB(sb);
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
+ /*
+ * Write quota structures to quota file, sync_blockdev() will write
+ * them to disk later
+ */
+ dquot_writeback_dquots(sb, -1);
+
spin_lock(&sbi->s_lock);
if (es->s_state & cpu_to_le16(EXT2_VALID_FS)) {
ext2_debug("setting valid to 0\n");
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 8c3a44b7c37..4ac304c55c5 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -2526,6 +2526,11 @@ static int ext3_sync_fs(struct super_block *sb, int wait)
tid_t target;
trace_ext3_sync_fs(sb, wait);
+ /*
+ * Writeback quota in non-journalled quota case - journalled quota has
+ * no dirty dquots
+ */
+ dquot_writeback_dquots(sb, -1);
if (journal_start_commit(EXT3_SB(sb)->s_journal, &target)) {
if (wait)
log_wait_commit(EXT3_SB(sb)->s_journal, target);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index eb7aa3e4ef0..d8759401eca 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4325,6 +4325,11 @@ static int ext4_sync_fs(struct super_block *sb, int wait)
trace_ext4_sync_fs(sb, wait);
flush_workqueue(sbi->dio_unwritten_wq);
+ /*
+ * Writeback quota in non-journalled quota case - journalled quota has
+ * no dirty dquots
+ */
+ dquot_writeback_dquots(sb, -1);
if (jbd2_journal_start_commit(sbi->s_journal, &target)) {
if (wait)
jbd2_log_wait_commit(sbi->s_journal, target);
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 313c329490e..f3d6bbfb32c 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -952,6 +952,8 @@ restart:
static int gfs2_sync_fs(struct super_block *sb, int wait)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
+
+ gfs2_quota_sync(sb, -1);
if (wait && sdp)
gfs2_log_flush(sdp, NULL);
return 0;
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 4a82950f412..c55c7452d28 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -601,6 +601,11 @@ static int jfs_sync_fs(struct super_block *sb, int wait)
/* log == NULL indicates read-only mount */
if (log) {
+ /*
+ * Write quota structures to quota file, sync_blockdev() will
+ * write them to disk later
+ */
+ dquot_writeback_dquots(sb, -1);
jfs_flush_journal(log, wait);
jfs_syncpt(log, 0);
}
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 651ce767b55..7a37dabf5a9 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -68,6 +68,11 @@ static int reiserfs_sync_fs(struct super_block *s, int wait)
{
struct reiserfs_transaction_handle th;
+ /*
+ * Writeback quota in non-journalled quota case - journalled quota has
+ * no dirty dquots
+ */
+ dquot_writeback_dquots(s, -1);
reiserfs_write_lock(s);
if (!journal_begin(&th, s, 1))
if (!journal_end_sync(&th, s, 1))
diff --git a/fs/sync.c b/fs/sync.c
index cae145dd801..66acd2ba91c 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -29,9 +29,6 @@
*/
static int __sync_filesystem(struct super_block *sb, int wait)
{
- if (sb->s_qcop && sb->s_qcop->quota_sync)
- sb->s_qcop->quota_sync(sb, -1);
-
if (wait)
sync_inodes_sb(sb);
else