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authorTheodore Ts'o <tytso@mit.edu>2009-11-23 12:24:57 (GMT)
committerTheodore Ts'o <tytso@mit.edu>2009-11-23 12:24:57 (GMT)
commit6b17d902fdd241adfa4ce780df20547b28bf5801 (patch)
treea5daca03108c565c58347d36b1dec70cf22ef1d1 /fs/ext4
parent1032988c71f3f85483b2b4319684d1205a704c02 (diff)
downloadlinux-6b17d902fdd241adfa4ce780df20547b28bf5801.tar.xz
ext4: avoid issuing unnecessary barriers
We don't to issue an I/O barrier on an error or if we force commit because we are doing data journaling. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Jan Kara <jack@suse.cz> Cc: stable@kernel.org
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/fsync.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 2b15312..a3c2507 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -60,7 +60,7 @@ int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync)
ret = flush_aio_dio_completed_IO(inode);
if (ret < 0)
- goto out;
+ return ret;
/*
* data=writeback:
* The caller's filemap_fdatawrite()/wait will sync the data.
@@ -79,10 +79,8 @@ int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync)
* (they were dirtied by commit). But that's OK - the blocks are
* safe in-journal, which is all fsync() needs to ensure.
*/
- if (ext4_should_journal_data(inode)) {
- ret = ext4_force_commit(inode->i_sb);
- goto out;
- }
+ if (ext4_should_journal_data(inode))
+ return ext4_force_commit(inode->i_sb);
if (!journal)
ret = sync_mapping_buffers(inode->i_mapping);