Use the superblock's UUID to generate the fsid when it's non-null.
Reviewed-by: Gao Xiang <[email protected]>
Reviewed-by: Jingbo Xu <[email protected]>
Signed-off-by: Hongzhen Luo <[email protected]>
---
v2: update the conversion of UUID to fsid, which looks
cleaner.
v1: https://lore.kernel.org/all/[email protected]/
---
fs/erofs/super.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index c0eb139adb07..58e41dc201fc 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -923,22 +923,20 @@ static int erofs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct erofs_sb_info *sbi = EROFS_SB(sb);
- u64 id = 0;
-
- if (!erofs_is_fscache_mode(sb))
- id = huge_encode_dev(sb->s_bdev->bd_dev);
buf->f_type = sb->s_magic;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = sbi->total_blocks;
buf->f_bfree = buf->f_bavail = 0;
-
buf->f_files = ULLONG_MAX;
buf->f_ffree = ULLONG_MAX - sbi->inos;
-
buf->f_namelen = EROFS_NAME_LEN;
- buf->f_fsid = u64_to_fsid(id);
+ if (uuid_is_null(&sb->s_uuid))
+ buf->f_fsid = u64_to_fsid(erofs_is_fscache_mode(sb) ? 0 :
+ huge_encode_dev(sb->s_bdev->bd_dev));
+ else
+ buf->f_fsid = uuid_to_fsid(sb->s_uuid.b);
return 0;
}
--
2.37.1