diff options
| author | Ronnie Sahlberg <lsahlber@redhat.com> | 2022-09-12 06:04:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-23 15:16:58 +0300 |
| commit | f3fbd08e7ca36e4b43a257d55e99258f8b67b156 (patch) | |
| tree | f84fa1abcd73609f5340dbefb8d8616edba67b22 /fs | |
| parent | a9398cb81cdc8464a308e7022d791d99dbf6480a (diff) | |
| download | linux-f3fbd08e7ca36e4b43a257d55e99258f8b67b156.tar.xz | |
cifs: revalidate mapping when doing direct writes
commit 7500a99281dfed2d4a84771c933bcb9e17af279b upstream.
Kernel bugzilla: 216301
When doing direct writes we need to also invalidate the mapping in case
we have a cached copy of the affected page(s) in memory or else
subsequent reads of the data might return the old/stale content
before we wrote an update to the server.
Cc: stable@vger.kernel.org
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/file.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 6c06870f9018..fafb69d338c2 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3244,6 +3244,9 @@ static ssize_t __cifs_writev( ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from) { + struct file *file = iocb->ki_filp; + + cifs_revalidate_mapping(file->f_inode); return __cifs_writev(iocb, from, true); } |