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| author | Chao Yu <yuchao0@huawei.com> | 2018-09-27 23:41:16 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-09-30 18:39:54 -0700 |
| commit | bab475c5414e8d1fa182fd17ae966864e9c85741 (patch) | |
| tree | de02f7fdd1e1afed101d5740e433e85e8efcc94c /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | f2fs: support superblock checksum (diff) | |
| download | linux-bab475c5414e8d1fa182fd17ae966864e9c85741.tar.gz linux-bab475c5414e8d1fa182fd17ae966864e9c85741.zip | |
Revert: "f2fs: check last page index in cached bio to decide submission"
There is one case that we can leave bio in f2fs, result in hanging
page writeback waiter.
Thread A Thread B
- f2fs_write_cache_pages
- f2fs_submit_page_write
page #0 cached in bio #0 of cold log
- f2fs_submit_page_write
page #1 cached in bio #1 of warm log
- f2fs_write_cache_pages
- f2fs_submit_page_write
bio is full, submit bio #1 contain page #1
- f2fs_submit_merged_write_cond(, page #1)
fail to submit bio #0 due to page #1 is not in any cached bios.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions