The quilt patch titled
Subject: mm: memory-failure: make action_result() return int
has been removed from the -mm tree. Its filename was
mm-memory-failure-make-action_result-return-int.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: mm: memory-failure: make action_result() return int
Date: Fri, 21 Oct 2022 16:46:11 +0800
Check mf_result in action_result(), only return 0 when MF_RECOVERED,
or return -EBUSY, which will simplify code a bit.
[wangkefeng.wang@xxxxxxxxxx: v2]
Link: https://lkml.kernel.org/r/20221024035138.99119-1-wangkefeng.wang@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20221021084611.53765-3-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Acked-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Reviewed-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 45 ++++++++++++++----------------------------
1 file changed, 16 insertions(+), 29 deletions(-)
--- a/mm/memory-failure.c~mm-memory-failure-make-action_result-return-int
+++ a/mm/memory-failure.c
@@ -1179,14 +1179,16 @@ static struct page_state error_states[]
* "Dirty/Clean" indication is not 100% accurate due to the possibility of
* setting PG_dirty outside page lock. See also comment above set_page_dirty().
*/
-static void action_result(unsigned long pfn, enum mf_action_page_type type,
- enum mf_result result)
+static int action_result(unsigned long pfn, enum mf_action_page_type type,
+ enum mf_result result)
{
trace_memory_failure_event(pfn, type, result);
num_poisoned_pages_inc();
pr_err("%#lx: recovery action for %s: %s\n",
pfn, action_page_types[type], action_name[result]);
+
+ return (result == MF_RECOVERED || result == MF_DELAYED) ? 0 : -EBUSY;
}
static int page_action(struct page_state *ps, struct page *p,
@@ -1197,14 +1199,12 @@ static int page_action(struct page_state
/* page p should be unlocked after returning from ps->action(). */
result = ps->action(ps, p);
- action_result(pfn, ps->type, result);
-
/* Could do more checks here if page looks ok */
/*
* Could adjust zone counters here to correct for the missing page.
*/
- return (result == MF_RECOVERED || result == MF_DELAYED) ? 0 : -EBUSY;
+ return action_result(pfn, ps->type, result);
}
static inline bool PageHWPoisonTakenOff(struct page *page)
@@ -1853,8 +1853,7 @@ retry:
flags |= MF_NO_RETRY;
goto retry;
}
- action_result(pfn, MF_MSG_UNKNOWN, MF_IGNORED);
- return res;
+ return action_result(pfn, MF_MSG_UNKNOWN, MF_IGNORED);
}
head = compound_head(p);
@@ -1880,22 +1879,17 @@ retry:
} else {
res = MF_FAILED;
}
- action_result(pfn, MF_MSG_FREE_HUGE, res);
- return res == MF_RECOVERED ? 0 : -EBUSY;
+ return action_result(pfn, MF_MSG_FREE_HUGE, res);
}
page_flags = head->flags;
if (!hwpoison_user_mappings(p, pfn, flags, head)) {
- action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
- res = -EBUSY;
- goto out;
+ unlock_page(head);
+ return action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
}
return identify_page_state(pfn, p, page_flags);
-out:
- unlock_page(head);
- return res;
}
#else
@@ -2060,16 +2054,13 @@ try_again:
}
res = MF_FAILED;
}
- action_result(pfn, MF_MSG_BUDDY, res);
- res = res == MF_RECOVERED ? 0 : -EBUSY;
+ res = action_result(pfn, MF_MSG_BUDDY, res);
} else {
- action_result(pfn, MF_MSG_KERNEL_HIGH_ORDER, MF_IGNORED);
- res = -EBUSY;
+ res = action_result(pfn, MF_MSG_KERNEL_HIGH_ORDER, MF_IGNORED);
}
goto unlock_mutex;
} else if (res < 0) {
- action_result(pfn, MF_MSG_UNKNOWN, MF_IGNORED);
- res = -EBUSY;
+ res = action_result(pfn, MF_MSG_UNKNOWN, MF_IGNORED);
goto unlock_mutex;
}
}
@@ -2090,8 +2081,7 @@ try_again:
*/
SetPageHasHWPoisoned(hpage);
if (try_to_split_thp_page(p) < 0) {
- action_result(pfn, MF_MSG_UNSPLIT_THP, MF_IGNORED);
- res = -EBUSY;
+ res = action_result(pfn, MF_MSG_UNSPLIT_THP, MF_IGNORED);
goto unlock_mutex;
}
VM_BUG_ON_PAGE(!page_count(p), p);
@@ -2124,8 +2114,7 @@ try_again:
retry = false;
goto try_again;
}
- action_result(pfn, MF_MSG_DIFFERENT_COMPOUND, MF_IGNORED);
- res = -EBUSY;
+ res = action_result(pfn, MF_MSG_DIFFERENT_COMPOUND, MF_IGNORED);
goto unlock_page;
}
@@ -2165,8 +2154,7 @@ try_again:
* Abort on fail: __filemap_remove_folio() assumes unmapped page.
*/
if (!hwpoison_user_mappings(p, pfn, flags, p)) {
- action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
- res = -EBUSY;
+ res = action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
goto unlock_page;
}
@@ -2174,8 +2162,7 @@ try_again:
* Torn down by someone else?
*/
if (PageLRU(p) && !PageSwapCache(p) && p->mapping == NULL) {
- action_result(pfn, MF_MSG_TRUNCATED_LRU, MF_IGNORED);
- res = -EBUSY;
+ res = action_result(pfn, MF_MSG_TRUNCATED_LRU, MF_IGNORED);
goto unlock_page;
}
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
