block_invalidatepage(): only release page if the full page was invalidated
Prior to commitd47992f86b
("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:d47992f86b
("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>
This commit is contained in:
parent
e8b098fc57
commit
3172485f4f
|
@ -1511,7 +1511,7 @@ void block_invalidatepage(struct page *page, unsigned int offset,
|
||||||
* The get_block cached value has been unconditionally invalidated,
|
* The get_block cached value has been unconditionally invalidated,
|
||||||
* so real IO is not possible anymore.
|
* so real IO is not possible anymore.
|
||||||
*/
|
*/
|
||||||
if (offset == 0)
|
if (length == PAGE_SIZE)
|
||||||
try_to_release_page(page, 0);
|
try_to_release_page(page, 0);
|
||||||
out:
|
out:
|
||||||
return;
|
return;
|
||||||
|
|
Loading…
Reference in a new issue