generic_file_fsync has been updated to issue a flush for older filesystems.
This patch tests for barrier flag in ext4 mount flags and calls the right function. Suggested-by: Jan Kara <[email protected]> Suggested-by: Christoph Hellwig <[email protected]> Cc: Jan Kara <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Alexander Viro <[email protected]> Cc: "Theodore Ts'o" <[email protected]> Cc: Andrew Morton <[email protected]> Signed-off-by: Fabian Frederick <[email protected]> --- fs/ext4/fsync.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index a8bc47f..fa82c0a 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -108,6 +108,10 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) if (!journal) { ret = generic_file_fsync(file, start, end, datasync); + if (test_opt(inode->i_sb, BARRIER)) + ret = generic_file_fsync(file, start, end, datasync); + else + ret = __generic_file_fsync(file, start, end, datasync); if (!ret && !hlist_empty(&inode->i_dentry)) ret = ext4_sync_parent(inode); goto out; -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
