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| author |   Hugh Dickins <hughd@google.com> | 2022-03-22 14:39:58 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-22 15:57:02 -0700 |
| commit | bc7863906f70934834f196ffdfb773cf0ddb10d1 (patch) | |
| tree | 741dfee77882b9339a8597e30cc22d25ecebab47 /mm/filemap.c | |
| parent | tmpfs: support for file creation time (diff) | |
| download | linux-dev-bc7863906f70934834f196ffdfb773cf0ddb10d1.tar.xz linux-dev-bc7863906f70934834f196ffdfb773cf0ddb10d1.zip | |
shmem: mapping_set_exiting() to help mapped resilience
When I added page_mapped() resilience in __delete_from_page_cache() for
the mapping_exiting() case, I missed that mapping_set_exiting() is done
in truncate_inode_pages_final(), which is not actually called for shmem.
(Today, it is folio_mapped() resilience in filemap_unaccount_folio().)
So the fixup to avoid a memory leak in this case never worked on shmem:
add a mapping_set_exiting() in shmem_evict_inode() at last. But this is
hardly a candidate for stable, since it's only useful if "Bad page".
Link: https://lkml.kernel.org/r/beefffda-6326-e36d-2d41-ed15b51af872@google.com
Fixes: 06b241f32c71 ("mm: __delete_from_page_cache show Bad page if mapped")
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
0 files changed, 0 insertions, 0 deletions