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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-09-05 21:42:32 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-12-09 22:41:47 -0500 |
| commit | c0cf3ef5e0f47e385920450b245d22bead93e7ad (patch) | |
| tree | 81db472b3d4c969ba0e3c9423ddad79ff793cc69 /fs/nfs/file.c | |
| parent | e5517c2a5a49ed5e99047008629f1cd60246ea0e (diff) | |
| download | linux-c0cf3ef5e0f47e385920450b245d22bead93e7ad.tar.gz linux-c0cf3ef5e0f47e385920450b245d22bead93e7ad.tar.bz2 linux-c0cf3ef5e0f47e385920450b245d22bead93e7ad.zip | |
nfs_write_end(): fix handling of short copies
What matters when deciding if we should make a page uptodate is
not how much we _wanted_ to copy, but how much we actually have
copied. As it is, on architectures that do not zero tail on
short copy we can leave uninitialized data in page marked uptodate.
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfs/file.c')
| -rw-r--r-- | fs/nfs/file.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 9ea85ae23c32..a1de8ef63e56 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -374,7 +374,7 @@ static int nfs_write_end(struct file *file, struct address_space *mapping, */ if (!PageUptodate(page)) { unsigned pglen = nfs_page_length(page); - unsigned end = offset + len; + unsigned end = offset + copied; if (pglen == 0) { zero_user_segments(page, 0, offset, |