diff options
author | Chris Mason <chris.mason@oracle.com> | 2011-03-07 11:10:24 -0500 |
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committer | Chris Mason <chris.mason@oracle.com> | 2011-03-07 11:10:24 -0500 |
commit | 31339acd07b4ba687906702085127895a56eb920 (patch) | |
tree | c1f2d464acfc97e8c5faecf57e644578cccce94d /fs/btrfs/extent_io.c | |
parent | b1bf862e9dad431175a1174379476299dbfdc017 (diff) |
Btrfs: deal with short returns from copy_from_user
When copy_from_user is only able to copy some of the bytes we requested,
we may end up creating a partially up to date page. To avoid garbage in
the page, we need to treat a partial copy as a zero length copy.
This makes the rest of the file_write code drop the page and
retry the whole copy instead of marking the partially up to
date page as dirty.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
cc: stable@kernel.org
Diffstat (limited to 'fs/btrfs/extent_io.c')
0 files changed, 0 insertions, 0 deletions