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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-06-04 14:21:28 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-06-08 10:25:50 -0700 |
| commit | 7dfeaa32204841aade36ba243a1cb45c54f42c15 (patch) | |
| tree | 10e5a6d48e85bdba1158e6a1b599812fda3edd5e /fs/f2fs/f2fs.h | |
| parent | 7f319975ccea80cf03377ff579b0a9e613308570 (diff) | |
| download | talos-obmc-linux-7dfeaa32204841aade36ba243a1cb45c54f42c15.tar.gz talos-obmc-linux-7dfeaa32204841aade36ba243a1cb45c54f42c15.zip | |
f2fs: avoid reverse IO order for NODE and DATA
There is a data race between allocate_data_block() and f2fs_sbumit_page_mbio(),
which incur unnecessary reversed bio submission.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e21f9df133d1..24c7cde84905 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -766,6 +766,7 @@ struct f2fs_sb_info { /* for bio operations */ struct f2fs_bio_info read_io; /* for read bios */ struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ + struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */ /* for checkpoint */ struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ |
