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(parent: b93f654) | patch
f2fs: fix to account IO correctly
authorChao Yu <yuchao0@huawei.com>
Mon, 22 Oct 2018 01:12:51 +0000 (09:12 +0800)
committerJaegeuk Kim <jaegeuk@kernel.org>
Tue, 23 Oct 2018 00:53:48 +0000 (17:53 -0700)
commit4c58ed076875f36dae0f240da1e25e99e5d4afb8
treefc4e43260670c1dfe95510e247be3597fb73b00btree
parentb93f654d73fa09088041efa77972b1d616a75fcbcommit | diff
f2fs: fix to account IO correctly

Below race can cause reversed reference on dirty count, fix it by
relocating __submit_bio() and inc_page_count().

Thread A Thread B
- f2fs_inplace_write_data
 - f2fs_submit_page_bio
  - __submit_bio
- f2fs_write_end_io
 - dec_page_count
  - inc_page_count

Cc: <stable@vger.kernel.org>
Fixes: d1b3e72d5490 ("f2fs: submit bio of in-place-update pages")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
fs/f2fs/data.c diff | blob | history
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