From: Jia Zhu <zhujia.zj@bytedance.com>
To: linux-erofs@lists.ozlabs.org, xiang@kernel.org, chao@kernel.org
Cc: linux-kernel@vger.kernel.org, huyue2@coolpad.com,
linux-fsdevel@vger.kernel.org, yinxin.x@bytedance.com
Subject: [PATCH V2 3/5] erofs: add 'domain_id' prefix when register sysfs
Date: Fri, 2 Sep 2022 18:53:03 +0800 [thread overview]
Message-ID: <20220902105305.79687-4-zhujia.zj@bytedance.com> (raw)
In-Reply-To: <20220902105305.79687-1-zhujia.zj@bytedance.com>
In shared domain mount procedure, add 'domain_id' prefix to register
sysfs entry. Thus we could distinguish mounts that don't use shared
domain.
Signed-off-by: Jia Zhu <zhujia.zj@bytedance.com>
---
fs/erofs/sysfs.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/fs/erofs/sysfs.c b/fs/erofs/sysfs.c
index c1383e508bbe..c0031d7bd817 100644
--- a/fs/erofs/sysfs.c
+++ b/fs/erofs/sysfs.c
@@ -201,12 +201,21 @@ static struct kobject erofs_feat = {
int erofs_register_sysfs(struct super_block *sb)
{
struct erofs_sb_info *sbi = EROFS_SB(sb);
+ char *name = NULL;
int err;
+ if (erofs_is_fscache_mode(sb)) {
+ name = kasprintf(GFP_KERNEL, "%s%s%s", sbi->opt.domain_id ?
+ sbi->opt.domain_id : "", sbi->opt.domain_id ? "," : "",
+ sbi->opt.fsid);
+ if (!name)
+ return -ENOMEM;
+ }
sbi->s_kobj.kset = &erofs_root;
init_completion(&sbi->s_kobj_unregister);
err = kobject_init_and_add(&sbi->s_kobj, &erofs_sb_ktype, NULL, "%s",
- erofs_is_fscache_mode(sb) ? sbi->opt.fsid : sb->s_id);
+ name ? name : sb->s_id);
+ kfree(name);
if (err)
goto put_sb_kobj;
return 0;
--
2.20.1
next prev parent reply other threads:[~2022-09-02 10:54 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 10:53 [PATCH V2 0/5] Introduce erofs shared domain Jia Zhu
2022-09-02 10:53 ` [PATCH V2 1/5] erofs: add 'domain_id' mount option for on-demand read sementics Jia Zhu
2022-09-02 10:53 ` [PATCH V2 2/5] erofs: introduce fscache-based domain Jia Zhu
2022-09-09 8:42 ` JeffleXu
2022-09-13 4:31 ` [External] " Jia Zhu
2022-09-13 6:34 ` JeffleXu
2022-09-14 3:02 ` JeffleXu
2022-09-14 3:15 ` [External] " Jia Zhu
2022-09-02 10:53 ` Jia Zhu [this message]
2022-09-09 9:23 ` [PATCH V2 3/5] erofs: add 'domain_id' prefix when register sysfs JeffleXu
2022-09-09 9:26 ` JeffleXu
2022-09-13 4:35 ` [External] " Jia Zhu
2022-09-02 10:53 ` [PATCH V2 4/5] erofs: remove duplicated unregister_cookie Jia Zhu
2022-09-09 9:55 ` JeffleXu
2022-09-09 10:28 ` JeffleXu
2022-09-13 4:52 ` [External] " Jia Zhu
2022-09-13 4:37 ` Jia Zhu
2022-09-02 10:53 ` [PATCH V2 5/5] erofs: support fscache based shared domain Jia Zhu
2022-09-13 6:27 ` JeffleXu
2022-09-13 12:59 ` [External] " Jia Zhu
2022-09-08 6:49 ` [PATCH V2 0/5] Introduce erofs " Jia Zhu
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