The patch titled
mm/filemap.c: fix mark_page_accessed() logic
has been removed from the -mm tree. Its filename was
mm-filemapc-fix-mark_page_accessed-logic.patch
This patch was dropped because an updated version will be merged
------------------------------------------------------
Subject: mm/filemap.c: fix mark_page_accessed() logic
From: Nick Piggin <npiggin@xxxxxxx>
A change to make database style random read() workloads perform better, by
calling mark_page_accessed for some non-page-aligned reads broke the case
of < PAGE_CACHE_SIZE files, which will not get their prev_index moved past
the first page.
Combine both heuristics for marking the page accessed.
Signed-off-by: Nick Piggin <npiggin@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/filemap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/filemap.c~mm-filemapc-fix-mark_page_accessed-logic mm/filemap.c
--- a/mm/filemap.c~mm-filemapc-fix-mark_page_accessed-logic
+++ a/mm/filemap.c
@@ -928,7 +928,7 @@ page_ok:
* When (part of) the same page is read multiple times
* in succession, only mark it as accessed the first time.
*/
- if (prev_index != index)
+ if (prev_index != index || !offset)
mark_page_accessed(page);
prev_index = index;
_
Patches currently in -mm which might be from npiggin@xxxxxxx are
mm-remove-gcc-workaround.patch
mm-more-rmap-checking.patch
mm-make-read_cache_page-synchronous.patch
fs-buffer-dont-pageuptodate-without-page-locked.patch
mm-simplify-filemap_nopage.patch
mm-fix-fault-vs-invalidate-race-for-linear-mappings.patch
mm-merge-populate-and-nopage-into-fault-fixes-nonlinear.patch
mm-merge-populate-and-nopage-into-fault-fixes-nonlinear-tidy.patch
mm-merge-nopfn-into-fault.patch
mm-remove-legacy-cruft.patch
mm-debug-check-for-the-fault-vs-invalidate-race.patch
mm-fix-clear_page_dirty_for_io-vs-fault-race.patch
mm-filemapc-fix-mark_page_accessed-logic.patch
exec-fix-remove_arg_zero.patch
exec-fix-remove_arg_zero-add-comment.patch
as-fix-antic_expire-check.patch
futex-restartable-futex_wait.patch
futex-restartable-futex_wait-fix.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
