direct-io: Handle O_(D)SYNC AIO
Call generic_write_sync() from the deferred I/O completion handler if
O_DSYNC is set for a write request. Also make sure various callers
don't call generic_write_sync if the direct I/O code returns
-EIOCBQUEUED.
Based on an earlier patch from Jan Kara <jack@suse.cz> with updates from
Jeff Moyer <jmoyer@redhat.com> and Darrick J. Wong <darrick.wong@oracle.com>.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 7e36ae3..9d0dd95 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2553,7 +2553,7 @@
mutex_unlock(&inode->i_mutex);
}
- if (rc > 0 || rc == -EIOCBQUEUED) {
+ if (rc > 0) {
ssize_t err;
err = generic_write_sync(file, pos, rc);