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| author | Mikulas Patocka <mpatocka@redhat.com> | 2026-01-26 15:36:22 +0100 |
|---|---|---|
| committer | Mikulas Patocka <mpatocka@redhat.com> | 2026-01-26 15:36:22 +0100 |
| commit | 2df8b310bcfe76827fd71092f58a2493ee6590b0 (patch) | |
| tree | 2321ef73e5ce47090026551ecedd6472b83c62c4 /tools/perf/lib/Documentation/tutorial/git@git.tavy.me:linux.git | |
| parent | d6d0e6b9d54532264761405a1ba8ea5bd293acb1 (diff) | |
dm: use bio_clone_blkg_association
The origin bio carries blk-cgroup information which could be set from
foreground(task_css(css) - wbc->wb->blkcg_css), so the blkcg won't
control buffer io since commit ca522482e3eaf ("dm: pass NULL bdev to
bio_alloc_clone"). The synchronous io is still under control by blkcg,
because 'bio->bi_blkg' is set by io submitting task which has been added
into 'cgroup.procs'.
Fix it by using bio_clone_blkg_association when submitting a cloned bio.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=220985
Fixes: ca522482e3eaf ("dm: pass NULL bdev to bio_alloc_clone")
Reported-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Zhihao Cheng <chengzhihao1@huawei.com>
Diffstat (limited to 'tools/perf/lib/Documentation/tutorial/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions