The patch titled
Subject: shmem-add-shmem_read_folio-and-shmem_read_folio_gfp-fix
has been added to the -mm mm-unstable branch. Its filename is
shmem-add-shmem_read_folio-and-shmem_read_folio_gfp-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/shmem-add-shmem_read_folio-and-shmem_read_folio_gfp-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: shmem-add-shmem_read_folio-and-shmem_read_folio_gfp-fix
Date: Wed Feb 8 07:54:45 PM PST 2023
fix shmem_read_mapping_page_gfp(), per Matthew
Link: https://lkml.kernel.org/r/Y+QdJTuzxeBYejw2@xxxxxxxxxxxxxxxxxxxx
Cc: Charan Teja Kalla <quic_charante@xxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Mark Hemment <markhemm@xxxxxxxxxxxxxx>
Cc: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Pavankumar Kondeti <quic_pkondeti@xxxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/shmem.c~shmem-add-shmem_read_folio-and-shmem_read_folio_gfp-fix
+++ a/mm/shmem.c
@@ -4354,8 +4354,12 @@ struct page *shmem_read_mapping_page_gfp
pgoff_t index, gfp_t gfp)
{
struct folio *folio = shmem_read_folio_gfp(mapping, index, gfp);
- struct page *page = folio_file_page(folio, index);
+ struct page *page;
+ if (IS_ERR(folio))
+ return &folio->page;
+
+ page = folio_file_page(folio, index);
if (PageHWPoison(page)) {
folio_put(folio);
return ERR_PTR(-EIO);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-shrinkers-fix-deadlock-in-shrinker-debugfs-fix.patch
mm-replace-vma-vm_flags-direct-modifications-with-modifier-calls-fix.patch
kasan-infer-allocation-size-by-scanning-metadata-fix.patch
shmem-add-shmem_read_folio-and-shmem_read_folio_gfp-fix.patch
lib-stackdepot-mm-rename-stack_depot_want_early_init-fix.patch
lib-stackdepot-annotate-racy-slab_index-accesses-fix.patch
