f2fs: fix to reorder set_page_dirty and wait_on_page_writeback

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[ Upstream commit 8d64d365ae ]

This patch reorders flow from

- update page
- set_page_dirty
- wait_on_page_writeback

to

- wait_on_page_writeback
- update page
- set_page_dirty

The reason is:
- set_page_dirty will increase reference of dirty page, the reference
should be cleared before wait_on_page_writeback to keep its consistency.
- some devices need stable page during page writebacking, so we
should not change page's data.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Chao Yu 2018-12-12 18:12:30 +08:00 • committed by Greg Kroah-Hartman

parent ef2c5838c3

commit d946d55bc7

4 changed files with 12 additions and 8 deletions

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7

fs/f2fs/checkpoint.c

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5

fs/f2fs/gc.c

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5

fs/f2fs/node.c

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3

fs/f2fs/segment.c

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