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| author | Huang Xiaojia <huangxiaojia2@huawei.com> | 2024-07-20 10:23:35 +0200 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2024-07-26 12:47:46 +0200 |
| commit | 684b290abc774202ff88897648f24520f40c916b (patch) | |
| tree | ff78ee0554f84301a5379c164647af91246a6889 /fs/erofs | |
| parent | erofs: fix race in z_erofs_get_gbuf() (diff) | |
| download | linux-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/erofs')
| -rw-r--r-- | fs/erofs/super.c | 16 |
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); |