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mm/memory-failure: fix an incorrect use of tail pages 

When backport commit c79c5a0a00 to 5.10-stable, there is a mistake change.
The head page instead of tail page should be passed to try_to_unmap(),
otherwise unmap will failed as follows.

 Memory failure: 0x121c10: failed to unmap page (mapcount=1)
 Memory failure: 0x121c10: recovery action for unmapping failed page: Ignored

Fixes: 70168fdc74 ("mm/memory-failure: check the mapcount of the precise page")
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liu Shixin 2024-03-07 20:48:41 +08:00 committed by Greg Kroah-Hartman
parent 4e37416e4e
commit 38753f1ada
1 changed files with 1 additions and 1 deletions
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2
mm/memory-failure.c
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@ -1075,7 +1075,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
unmap_success = false;
}
} else {
unmap_success = try_to_unmap(p, ttu);
unmap_success = try_to_unmap(hpage, ttu);
}
}
if (!unmap_success)