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| author | Ryan Ding <ryan.ding@oracle.com> | 2016-03-26 00:20:58 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-26 02:37:42 +0300 |
| commit | 65c4db8c8282cd239f0ba3226cfe59cc9768193c (patch) | |
| tree | 382f13a751f8d82adc6b3a39951e8948d33365e3 /crypto/poly1305_generic.c | |
| parent | b46637d59f1160dee5d8e03498e667ab36c2be04 (diff) | |
| download | linux-65c4db8c8282cd239f0ba3226cfe59cc9768193c.tar.xz | |
ocfs2: test target page before change it
To support direct io in ocfs2_write_begin_nolock & ocfs2_write_end_nolock.
Direct io data will not appear in buffer. The w_target_page member will
not be filled by direct io. So avoid to use it when it's NULL. Unlinke
buffer io and mmap, direct io will call write_begin with more than 1
page a time. So the target_index is not sufficient to describe the
actual data. change it to a range start at target_index, end in
end_index.
Signed-off-by: Ryan Ding <ryan.ding@oracle.com>
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'crypto/poly1305_generic.c')
0 files changed, 0 insertions, 0 deletions