path: root/fs/buffer.c
diff options
authorJeff Moyer <jmoyer@redhat.com>2018-04-05 16:25:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-05 21:36:27 -0700
commit3172485f4f8032649c144e4aafa550e1e6179332 (patch)
tree2efd535f6a05f132f897b54cfcade87481e16136 /fs/buffer.c
parentmm: kernel-doc: add missing parameter descriptions (diff)
block_invalidatepage(): only release page if the full page was invalidated
Prior to commit d47992f86b30 ("mm: change invalidatepage prototype to accept length"), an offset of 0 meant that the full page was being invalidated. After that commit, we need to instead check the length. Jan said: : : The only possible issue is that try_to_release_page() was called more : often than necessary. Otherwise the issue is harmless but still it's good : to have this fixed. Link: http://lkml.kernel.org/r/x49fu5rtnzs.fsf@segfault.boston.devel.redhat.com Fixes: d47992f86b307 ("mm: change invalidatepage prototype to accept length") Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Lukas Czerner <lczerner@redhat.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/buffer.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index 9a73924db22f..ec5dd39071e6 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1511,7 +1511,7 @@ void block_invalidatepage(struct page *page, unsigned int offset,
* The get_block cached value has been unconditionally invalidated,
* so real IO is not possible anymore.
- if (offset == 0)
+ if (length == PAGE_SIZE)
try_to_release_page(page, 0);