Messages in this thread Patch in this message | | | From | Daeho Jeong <> | Subject | [PATCH] f2fs: prevent setting ioprio of thread not in merge mode | Date | Mon, 1 Feb 2021 09:57:49 +0900 |
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From: Daeho Jeong <daehojeong@google.com>
It causes a crash to change the ioprio of checkpoint thread not in checkpoint=merge. I fixed that to prevent setting the ioprio of the thread when checkpoint=merge is not enabled.
Signed-off-by: Daeho Jeong <daehojeong@google.com> --- fs/f2fs/sysfs.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 100608bcd517..e38a7f6921dd 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -357,8 +357,12 @@ static ssize_t __sbi_store(struct f2fs_attr *a, return -EINVAL; cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data); - ret = set_task_ioprio(cprc->f2fs_issue_ckpt, - cprc->ckpt_thread_ioprio); + if (test_opt(sbi, MERGE_CHECKPOINT)) { + ret = set_task_ioprio(cprc->f2fs_issue_ckpt, + cprc->ckpt_thread_ioprio); + if (ret) + return ret; + } return count; } -- 2.30.0.365.g02bc693789-goog
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