Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-04 04:04:19 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

mm/memory-failure: move hwpoison_filter() higher up

Browse Source 
Move hwpoison_filter() higher up as there is no need to spend a lot cycles
only to find out later that the page is supposed to be skipped from
hwpoison handling.

Link: https://lkml.kernel.org/r/20240524215306.2705454-5-jane.chu@oracle.com
Signed-off-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Oscar Salvador <oalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Jane Chu 2024-05-24 15:53:05 -06:00 committed by Andrew Morton
parent b8b9488d50
commit 9b0ab153d7
1 changed files with 12 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
mm/memory-failure.c
View File

@ -2300,6 +2300,18 @@ int memory_failure(unsigned long pfn, int flags)
}
folio = page_folio(p);
/* filter pages that are protected from hwpoison test by users */
folio_lock(folio);
if (hwpoison_filter(p)) {
ClearPageHWPoison(p);
folio_unlock(folio);
folio_put(folio);
res = -EOPNOTSUPP;
goto unlock_mutex;
}
folio_unlock(folio);
if (folio_test_large(folio)) {
/*
* The flag must be set after the refcount is bumped
@ -2363,14 +2375,6 @@ int memory_failure(unsigned long pfn, int flags)
*/
page_flags = folio->flags;
if (hwpoison_filter(p)) {
ClearPageHWPoison(p);
folio_unlock(folio);
folio_put(folio);
res = -EOPNOTSUPP;
goto unlock_mutex;
}
/*
* __munlock_folio() may clear a writeback folio's LRU flag without
* the folio lock. We need to wait for writeback completion for this