From: Jaegeuk Kim <jaegeuk@kernel.org>
To: linux-kernel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net, kernel-team@android.com
Cc: Jaegeuk Kim <jaegeuk@kernel.org>, Daeho Jeong <daehojeong@google.com>
Subject: [f2fs-dev] [PATCH] f2fs: fix deadlock between quota writes and checkpoint
Date: Wed, 29 Jul 2020 00:02:44 -0700 [thread overview]
Message-ID: <20200729070244.584518-1-jaegeuk@kernel.org> (raw)
f2fs_write_data_pages(quota_mapping)
__f2fs_write_data_pages f2fs_write_checkpoint
* blk_start_plug(&plug);
* add bio in write_io[DATA]
- block_operations
- skip syncing quota by
>DEFAULT_RETRY_QUOTA_FLUSH_COUNT
- down_write(&sbi->node_write);
- f2fs_write_single_data_page
- f2fs_do_write_data_page
- f2fs_outplace_write_data
- do_write_page
- f2fs_allocate_data_block
- down_write(node_write)
- f2fs_wait_on_all_pages(F2FS_WB_CP_DATA);
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/checkpoint.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 8c782d3f324f0..99c8061da55b9 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1269,6 +1269,8 @@ void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type)
if (type == F2FS_DIRTY_META)
f2fs_sync_meta_pages(sbi, META, LONG_MAX,
FS_CP_META_IO);
+ else if (type == F2FS_WB_CP_DATA)
+ f2fs_submit_merged_write(sbi, DATA);
io_schedule_timeout(DEFAULT_IO_TIMEOUT);
}
finish_wait(&sbi->cp_wait, &wait);
--
2.28.0.rc0.142.g3c755180ce-goog
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next reply other threads:[~2020-07-29 7:02 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 7:02 Jaegeuk Kim [this message]
2020-07-29 12:42 ` [f2fs-dev] [PATCH] f2fs: fix deadlock between quota writes and checkpoint Chao Yu
2020-07-29 16:21 ` Jaegeuk Kim
2020-08-01 19:22 ` Eric Biggers
2020-08-04 3:01 ` Chao Yu
2020-08-04 3:54 ` Jaegeuk Kim
2020-08-04 7:57 ` Chao Yu
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