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Linus Torvalds d0b51bfb23 Revert "mm: shmem: don't truncate page if memory failure happens" 
This reverts commit b9d02f1bdd.

The error handling of that patch was fundamentally broken, and it needs
to be entirely re-done.

For example, in shmem_write_begin() it would call shmem_getpage(), then
ignore the error return from that, and look at the page pointer contents
instead.

And in shmem_read_mapping_page_gfp(), the patch tested PageHWPoison() on
a page pointer that two lines earlier had potentially been set as an
error pointer.

These issues could be individually fixed, but when it has this many
issues, I'm just reverting it instead of waiting for fixes.

Link: https://lore.kernel.org/linux-mm/20211111084617.6746-1-ajaygargnsit@gmail.com/
Reported-by: Ajay Garg <ajaygargnsit@gmail.com>
Reported-by: Jens Axboe <axboe@kernel.dk>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-11-13 12:03:03 -08:00
..
damon
kasan kasan: add kasan mode messages when kasan init 2021-11-11 09:34:35 -08:00
kfence
backing-dev.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
balloon_compaction.c
bootmem_info.c
cleancache.c
cma_debug.c
cma_sysfs.c
cma.c
cma.h
compaction.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
debug_page_ref.c
debug_vm_pgtable.c
debug.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c Merge branch 'akpm' (patches from Andrew) 2021-11-09 10:11:53 -08:00
folio-compat.c
frontswap.c
gup_test.c
gup_test.h
gup.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
highmem.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
hmm.c
huge_memory.c
hugetlb_cgroup.c
hugetlb_vmemmap.c
hugetlb_vmemmap.h
hugetlb.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
hwpoison-inject.c
init-mm.c
internal.h Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig kernel/resource: disallow access to exclusive system RAM regions 2021-11-09 10:02:52 -08:00
Kconfig.debug
khugepaged.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
kmemleak.c
ksm.c
list_lru.c
maccess.c
madvise.c
Makefile
mapping_dirty_helpers.c
memblock.c arm64 fixes for -rc1 2021-11-10 11:29:30 -08:00
memcontrol.c mm: unexport {,un}lock_page_memcg 2021-11-11 09:34:35 -08:00
memfd.c mm,hugetlb: remove mlock ulimit for SHM_HUGETLB 2021-11-09 10:02:48 -08:00
memory_hotplug.c
memory-failure.c Revert "mm: shmem: don't truncate page if memory failure happens" 2021-11-13 12:03:03 -08:00
memory.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
mempolicy.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
mempool.c
memremap.c
memtest.c
migrate.c mm/migrate.c: remove MIGRATE_PFN_LOCKED 2021-11-11 09:34:35 -08:00
mincore.c
mlock.c
mm_init.c
mmap_lock.c
mmap.c mm,hugetlb: remove mlock ulimit for SHM_HUGETLB 2021-11-09 10:02:48 -08:00
mmu_gather.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nommu.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
oom_kill.c pidfd.v5.16 2021-11-10 16:02:08 -08:00
page_alloc.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
page_counter.c
page_ext.c
page_idle.c
page_io.c
page_isolation.c
page_owner.c mm/page_owner.c: modify the type of argument "order" in some functions 2021-11-11 09:34:35 -08:00
page_poison.c
page_reporting.c
page_reporting.h
page_vma_mapped.c
page-writeback.c folio: Add a function to get the host inode for a folio 2021-11-10 21:16:52 +00:00
pagewalk.c
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c
pgalloc-track.h
pgtable-generic.c
process_vm_access.c
ptdump.c
readahead.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
rmap.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
rodata_test.c
secretmem.c
shmem.c Revert "mm: shmem: don't truncate page if memory failure happens" 2021-11-13 12:03:03 -08:00
shuffle.c
shuffle.h
slab_common.c
slab.c
slab.h
slob.c
slub.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
sparse-vmemmap.c
sparse.c
swap_cgroup.c
swap_slots.c
swap_state.c
swap.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
swapfile.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
truncate.c vfs: keep inodes with page cache off the inode shrinker LRU 2021-11-09 10:02:48 -08:00
usercopy.c
userfaultfd.c Revert "mm: shmem: don't truncate page if memory failure happens" 2021-11-13 12:03:03 -08:00
util.c
vmacache.c
vmalloc.c
vmpressure.c
vmscan.c Merge branch 'akpm' (patches from Andrew) 2021-11-09 10:11:53 -08:00
vmstat.c
workingset.c Merge branch 'akpm' (patches from Andrew) 2021-11-09 10:11:53 -08:00
z3fold.c
zbud.c
zpool.c
zsmalloc.c
zswap.c