The patch titled
Subject: readahead: Avoid multiple marked readahead pages
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
readahead-avoid-multiple-marked-readahead-pages-v2.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/readahead-avoid-multiple-marked-readahead-pages-v2.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Jan Kara <jack@xxxxxxx>
Subject: readahead: Avoid multiple marked readahead pages
Date: Tue, 23 Jan 2024 16:32:54 +0100
fix one more place where mark rounding was done as well
Link: https://lkml.kernel.org/r/20240123153254.5206-1-jack@xxxxxxx
Fixes: b9ff43dd2743 ("mm/readahead: Fix readahead with large folios")
Signed-off-by: Jan Kara <jack@xxxxxxx>
Cc: Guo Xuenan <guoxuenan@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/readahead.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/readahead.c~readahead-avoid-multiple-marked-readahead-pages-v2
+++ a/mm/readahead.c
@@ -575,7 +575,7 @@ static void ondemand_readahead(struct re
* It's the expected callback index, assume sequential access.
* Ramp up sizes, and push forward the readahead window.
*/
- expected = round_up(ra->start + ra->size - ra->async_size,
+ expected = round_down(ra->start + ra->size - ra->async_size,
1UL << order);
if (index == expected || index == (ra->start + ra->size)) {
ra->start += ra->size;
_
Patches currently in -mm which might be from jack@xxxxxxx are
readahead-avoid-multiple-marked-readahead-pages.patch
readahead-avoid-multiple-marked-readahead-pages-v2.patch
