diff options
| author | Kaixu Xia <kaixuxia@tencent.com> | 2022-09-13 17:11:25 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:03:14 -0700 |
| commit | f1c71c2825218dc8b35c04ab439fdf3d32778c7c (patch) | |
| tree | cb30fe8884dff50e14bc0860ba0e12bd3efe034b /mm/damon/sysfs.c | |
| parent | 8ef4d5caa66d62b3b87a14d01562fb487651df2e (diff) | |
| download | linux-f1c71c2825218dc8b35c04ab439fdf3d32778c7c.tar.bz2 | |
mm/damon/sysfs: simplify the variable 'pid' assignment operation
We can initialize the variable 'pid' with '-1' in pid_show() to simplify
the variable assignment operation and make the code more readable.
Link: https://lkml.kernel.org/r/1663060287-30201-3-git-send-email-kaixuxia@tencent.com
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/damon/sysfs.c')
| -rw-r--r-- | mm/damon/sysfs.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 3dbf3804ec88..1fa0023f136e 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -2592,19 +2592,16 @@ static ssize_t pid_show(struct kobject *kobj, struct damon_sysfs_kdamond *kdamond = container_of(kobj, struct damon_sysfs_kdamond, kobj); struct damon_ctx *ctx; - int pid; + int pid = -1; if (!mutex_trylock(&damon_sysfs_lock)) return -EBUSY; ctx = kdamond->damon_ctx; - if (!ctx) { - pid = -1; + if (!ctx) goto out; - } + mutex_lock(&ctx->kdamond_lock); - if (!ctx->kdamond) - pid = -1; - else + if (ctx->kdamond) pid = ctx->kdamond->pid; mutex_unlock(&ctx->kdamond_lock); out: |