summaryrefslogtreecommitdiffstats
path: root/fs
diff options
context:
space:
mode:
authorHuang Xiaojia <huangxiaojia2@huawei.com>2024-07-20 10:23:35 +0200
committerGao Xiang <hsiangkao@linux.alibaba.com>2024-07-26 12:47:46 +0200
commit684b290abc774202ff88897648f24520f40c916b (patch)
treeff78ee0554f84301a5379c164647af91246a6889 /fs
parenterofs: fix race in z_erofs_get_gbuf() (diff)
downloadlinux-684b290abc774202ff88897648f24520f40c916b.tar.xz
linux-684b290abc774202ff88897648f24520f40c916b.zip
erofs: add support for FS_IOC_GETFSSYSFSPATH
FS_IOC_GETFSSYSFSPATH ioctl exposes /sys/fs path of a given filesystem, potentially standarizing sysfs reporting. This patch add support for FS_IOC_GETFSSYSFSPATH for erofs, "erofs/<dev>" will be outputted for bdev cases, "erofs/[domain_id,]<fs_id>" will be outputted for fscache cases. Signed-off-by: Huang Xiaojia <huangxiaojia2@huawei.com> Link: https://lore.kernel.org/r/20240720082335.441563-1-huangxiaojia2@huawei.com Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/erofs/super.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index 35268263aaed..32ce5b35e1df 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -576,6 +576,21 @@ static const struct export_operations erofs_export_ops = {
.get_parent = erofs_get_parent,
};
+static void erofs_set_sysfs_name(struct super_block *sb)
+{
+ struct erofs_sb_info *sbi = EROFS_SB(sb);
+
+ if (erofs_is_fscache_mode(sb)) {
+ if (sbi->domain_id)
+ super_set_sysfs_name_generic(sb, "%s,%s",sbi->domain_id,
+ sbi->fsid);
+ else
+ super_set_sysfs_name_generic(sb, "%s", sbi->fsid);
+ return;
+ }
+ super_set_sysfs_name_id(sb);
+}
+
static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc)
{
struct inode *inode;
@@ -643,6 +658,7 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc)
sb->s_flags |= SB_POSIXACL;
else
sb->s_flags &= ~SB_POSIXACL;
+ erofs_set_sysfs_name(sb);
#ifdef CONFIG_EROFS_FS_ZIP
xa_init(&sbi->managed_pslots);