This is a note to let you know that I've just added the patch titled
erofs: fix setting up pcluster for temporary pages
to the 5.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
erofs-fix-setting-up-pcluster-for-temporary-pages.patch
and it can be found in the queue-5.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a30573b3cdc77b8533d004ece1ea7c0146b437a0 Mon Sep 17 00:00:00 2001
From: Gao Xiang <hsiangkao@xxxxxxxxxx>
Date: Thu, 22 Oct 2020 22:57:21 +0800
Subject: erofs: fix setting up pcluster for temporary pages
From: Gao Xiang <hsiangkao@xxxxxxxxxx>
commit a30573b3cdc77b8533d004ece1ea7c0146b437a0 upstream.
pcluster should be only set up for all managed pages instead of
temporary pages. Since it currently uses page->mapping to identify,
the impact is minor for now.
[ Update: Vladimir reported the kernel log becomes polluted
because PAGE_FLAGS_CHECK_AT_FREE flag(s) set if the page
allocation debug option is enabled. ]
Link: https://lore.kernel.org/r/20201022145724.27284-1-hsiangkao@xxxxxxx
Fixes: 5ddcee1f3a1c ("erofs: get rid of __stagingpage_alloc helper")
Cc: <stable@xxxxxxxxxxxxxxx> # 5.5+
Tested-by: Vladimir Zapolskiy <vladimir@xxxxxxxxxx>
Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>
Signed-off-by: Gao Xiang <hsiangkao@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/erofs/zdata.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -1080,8 +1080,11 @@ out_allocpage:
cond_resched();
goto repeat;
}
- set_page_private(page, (unsigned long)pcl);
- SetPagePrivate(page);
+
+ if (tocache) {
+ set_page_private(page, (unsigned long)pcl);
+ SetPagePrivate(page);
+ }
out: /* the only exit (for tracing and debugging) */
return page;
}
Patches currently in stable-queue which might be from hsiangkao@xxxxxxxxxx are
queue-5.9/erofs-derive-atime-instead-of-leaving-it-empty.patch
queue-5.9/erofs-fix-setting-up-pcluster-for-temporary-pages.patch
