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linux/block/bio.c
Tony Battersby 242006996d block: Fix page refcounts for unaligned buffers in __bio_release_pages() 
commit 38b43539d6 upstream.

Fix an incorrect number of pages being released for buffers that do not
start at the beginning of a page.

Fixes: 1b151e2435 ("block: Remove special-casing of compound pages")
Cc: stable@vger.kernel.org
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Tested-by: Greg Edwards <gedwards@ddn.com>
Link: https://lore.kernel.org/r/86e592a9-98d4-4cff-a646-0c0084328356@cybernetics.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
[ Tony: backport to v6.1 by replacing bio_release_page() loop with
  folio_put_refs() as commits fd363244e8 and e4cc64657b are not
  present. ]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-04-03 15:19:46 +02:00

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