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| author | Yongpeng Yang <yangyongpeng1@oppo.com> | 2024-12-04 11:31:13 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2024-12-16 16:12:29 +0000 |
| commit | e9a844f6e487ee0f64d995d1d8ffde2e270e2479 (patch) | |
| tree | e5f132f02f3ba70cd2e1e3ae25c8243a7a2eb71e /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 5f6594542779e69c6c6e2b57341c352174135eed (diff) | |
f2fs: The GC triggered by ioctl also needs to mark the segno as victim
In SSR mode, the segment selected for allocation might be the same as
the target segment of the GC triggered by ioctl, resulting in the GC
moving the CURSEG_I(sbi, type)->segno.
Thread A Thread B or Thread A
- f2fs_ioc_gc_range
- __f2fs_ioc_gc_range(.victim_segno=segno#N)
- f2fs_gc
- __get_victim
- f2fs_get_victim
: segno#N is valid, return segno#N as source segment of GC
- f2fs_allocate_data_block
- need_new_seg
- get_ssr_segment
- f2fs_get_victim
: get segno #N as destination segment
- change_curseg
Fixes: e066b83c9b40 ("f2fs: add ioctl to flush data from faster device to cold area")
Signed-off-by: Yongpeng Yang <yangyongpeng1@oppo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions