提交 7500a992 编写于 作者: R Ronnie Sahlberg 提交者: Steve French

cifs: revalidate mapping when doing direct writes

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: NPaulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: NRonnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: NSteve French <stfrench@microsoft.com>
上级 80e78fcc
......@@ -3575,6 +3575,9 @@ 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);
}
......
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