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(parent: 899f042) | patch
fix unbalanced page refcounting in bio_map_user_iov
authorVitaly Mayatskikh <[email protected]>
Fri, 22 Sep 2017 05:18:39 +0000 (01:18 -0400)
committerAl Viro <[email protected]>
Wed, 11 Oct 2017 03:54:51 +0000 (23:54 -0400)
commit95d78c28b5a85bacbc29b8dba7c04babb9b0d467
tree171528916186018b071110eced6ebc55f5d6b3c3tree | snapshot
parent899f0429c7d3eed886406cd72182bee3b96aa1f9commit | diff
fix unbalanced page refcounting in bio_map_user_iov

bio_map_user_iov and bio_unmap_user do unbalanced pages refcounting if
IO vector has small consecutive buffers belonging to the same page.
bio_add_pc_page merges them into one, but the page reference is never
dropped.

Cc: [email protected]
Signed-off-by: Vitaly Mayatskikh <[email protected]>
Signed-off-by: Al Viro <[email protected]>
block/bio.c diff | blob | history
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