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| author | David Sterba <dsterba@suse.cz> | 2014-03-28 17:38:48 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2014-11-12 16:53:13 +0100 |
| commit | 6b5fe46dfa52441f49c7432b1c1b1cb767834708 (patch) | |
| tree | 331e7651b2dbad5bcfe6dca181d8992c7a365f2e | |
| parent | 572d9ab7845ea0e043ec34cd733a75228130ad03 (diff) | |
| download | linux-6b5fe46dfa52441f49c7432b1c1b1cb767834708.tar.gz linux-6b5fe46dfa52441f49c7432b1c1b1cb767834708.tar.bz2 linux-6b5fe46dfa52441f49c7432b1c1b1cb767834708.zip | |
btrfs: do commit in sync_fs if there are pending changes
If a pending change is requested, it's not processed unless there is a
transaction commit about to happen, not even after sync or SYNC_FS
ioctl. For example a remount that toggles the inode_cache option will
not take effect after sync on a quiescent filesystem.
Signed-off-by: David Sterba <dsterba@suse.cz>
| -rw-r--r-- | fs/btrfs/super.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 54bd91ece35b..1da16d59e115 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -993,9 +993,17 @@ int btrfs_sync_fs(struct super_block *sb, int wait) trans = btrfs_attach_transaction_barrier(root); if (IS_ERR(trans)) { /* no transaction, don't bother */ - if (PTR_ERR(trans) == -ENOENT) - return 0; - return PTR_ERR(trans); + if (PTR_ERR(trans) == -ENOENT) { + /* + * Exit unless we have some pending changes + * that need to go through commit + */ + if (fs_info->pending_changes == 0) + return 0; + trans = btrfs_start_transaction(root, 0); + } else { + return PTR_ERR(trans); + } } return btrfs_commit_transaction(trans, root); } |