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__generic_file_write_iter(): fix handling of sync error after DIO

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If DIO results in short write and sync write fails, we want to bugger off
whether the DIO part has written anything or not; the logics on the return
will take care of the right return value.

Cc: stable@vger.kernel.org [3.16]
Reported-by: Anton Altaparmakov <aia21@cam.ac.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-08-08 12:39:16 -04:00
parent c7f3888ad7
commit 60bb45297f
1 changed files with 1 additions and 1 deletions
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2
mm/filemap.c
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@ -2584,7 +2584,7 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
* that this differs from normal direct-io semantics, which
* will return -EFOO even if some bytes were written.
*/
if (unlikely(status < 0) && !written) {
if (unlikely(status < 0)) {
err = status;
goto out;
}