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authorIngo Molnar <mingo@kernel.org>2016-11-22 12:37:38 +0100
committerIngo Molnar <mingo@kernel.org>2016-11-22 12:37:38 +0100
commit02cb689b2c102178c83e763e4f34b3efe7f969e2 (patch)
treecba7eb3f16487cef5dc4a2690686b1e2eb42af0c /mm/filemap.c
parent194a6b5b9cb6b91a5f7d86984165a3bc55188599 (diff)
parent3b404a519815b9820f73f1ecf404e5546c9270ba (diff)
Merge branch 'linus' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index c7fe2f16503f..50b52fe51937 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1732,6 +1732,9 @@ find_page:
if (inode->i_blkbits == PAGE_SHIFT ||
!mapping->a_ops->is_partially_uptodate)
goto page_not_up_to_date;
+ /* pipes can't handle partially uptodate pages */
+ if (unlikely(iter->type & ITER_PIPE))
+ goto page_not_up_to_date;
if (!trylock_page(page))
goto page_not_up_to_date;
/* Did it get truncated before we got the lock? */