linux/Documentation/mm
Alexander Atanasov 7c82b3b308 mm: Make failslab writable again
In (060807f841 mm, slub: make remaining slub_debug related attributes
read-only) failslab was made read-only.
I think it became a collateral victim to the two other options for which
the reasons are perfectly valid.
Here is why:
 - sanity_checks and trace are slab internal debug options,
   failslab is used for fault injection.
 - for fault injections, which by presumption are random, it
   does not matter if it is not set atomically. And you need to
   set atleast one more option to trigger fault injection.
 - in a testing scenario you may need to change it at runtime
   example: module loading - you test all allocations limited
   by the space option. Then you move to test only your module's
   own slabs.
 - when set by command line flags it effectively disables all
   cache merges.

Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Jann Horn <jannh@google.com>
Cc: Vijayanand Jitta <vjitta@codeaurora.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Pekka Enberg <penberg@kernel.org>
Link: http://lkml.kernel.org/r/20200610163135.17364-5-vbabka@suse.cz

Signed-off-by: Alexander Atanasov <alexander.atanasov@virtuozzo.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
2022-10-24 12:19:06 +02:00
..
damon
active_mm.rst
arch_pgtable_helpers.rst
balance.rst
bootmem.rst
free_page_reporting.rst
frontswap.rst
highmem.rst Documentation/mm: add details about kmap_local_page() and preemption 2022-08-08 18:06:46 -07:00
hmm.rst
hugetlbfs_reserv.rst
hwpoison.rst
index.rst mm: multi-gen LRU: design doc 2022-09-26 19:46:11 -07:00
ksm.rst ksm: add the ksm prefix to the names of the ksm private structures 2022-10-03 14:02:43 -07:00
memory-model.rst
mmu_notifier.rst
multigen_lru.rst mm: multi-gen LRU: design doc 2022-09-26 19:46:11 -07:00
numa.rst
oom.rst
overcommit-accounting.rst
page_allocation.rst
page_cache.rst
page_frags.rst
page_migration.rst
page_owner.rst A handful of relatively simple documentation fixes, plus a set of patches 2022-10-13 10:58:32 -07:00
page_reclaim.rst
page_table_check.rst
page_tables.rst
physical_memory.rst
process_addrs.rst
remap_file_pages.rst
shmfs.rst
slab.rst
slub.rst mm: Make failslab writable again 2022-10-24 12:19:06 +02:00
split_page_table_lock.rst
swap.rst
transhuge.rst
unevictable-lru.rst Documentation/mm: modify page_referenced to folio_referenced 2022-09-29 13:16:08 -06:00
vmalloc.rst
vmalloced-kernel-stacks.rst
vmemmap_dedup.rst mm: hugetlb_vmemmap: move code comments to vmemmap_dedup.rst 2022-08-08 18:06:43 -07:00
z3fold.rst
zsmalloc.rst