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| author | Chao Yu <yuchao0@huawei.com> | 2018-05-26 09:00:13 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-31 11:31:51 -0700 |
| commit | 107a805de87ec071dab602071c14e67b98b0c519 (patch) | |
| tree | 543c688ea92b6651a9bb03b4a7bd09d728aab754 /fs/f2fs/f2fs.h | |
| parent | e5e5732d8120654159254c16834bc8663d8be124 (diff) | |
| download | linux-stable-107a805de87ec071dab602071c14e67b98b0c519.tar.gz linux-stable-107a805de87ec071dab602071c14e67b98b0c519.tar.bz2 linux-stable-107a805de87ec071dab602071c14e67b98b0c519.zip | |
f2fs: keep migration IO order in LFS mode
For non-migration IO, we will keep order of data/node blocks' submitting
as allocation sequence by sorting IOs in per log io_list list, but for
migration IO, it could be out-of-order.
In LFS mode, we should keep all IOs including migration IO be ordered,
so that this patch fixes to add an additional lock to keep submitting
order.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 33c060d87a88..24eab9622ad1 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1114,6 +1114,8 @@ struct f2fs_sb_info { struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */ struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE]; /* bio ordering for NODE/DATA */ + /* keep migration IO order for LFS mode */ + struct rw_semaphore io_order_lock; mempool_t *write_io_dummy; /* Dummy pages */ /* for checkpoint */ |