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bcachefs: Report inode counts via statfs

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Took awhile to figure out exactly what statfs wanted...

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-11-02 19:49:23 -05:00 committed by Kent Overstreet
parent d108efc254
commit df082b3a50
1 changed files with 8 additions and 2 deletions
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10
fs/bcachefs/fs.c
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@ -1261,6 +1261,11 @@ static int bch2_statfs(struct dentry *dentry, struct kstatfs *buf)
struct bch_fs *c = sb->s_fs_info;
struct bch_fs_usage_short usage = bch2_fs_usage_read_short(c);
unsigned shift = sb->s_blocksize_bits - 9;
/*
* this assumes inodes take up 64 bytes, which is a decent average
* number:
*/
u64 avail_inodes = ((usage.capacity - usage.used) << 3);
u64 fsid;
buf->f_type = BCACHEFS_STATFS_MAGIC;
@ -1268,8 +1273,9 @@ static int bch2_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_blocks = usage.capacity >> shift;
buf->f_bfree = (usage.capacity - usage.used) >> shift;
buf->f_bavail = buf->f_bfree;
buf->f_files = 0;
buf->f_ffree = 0;
buf->f_files = usage.nr_inodes + avail_inodes;
buf->f_ffree = avail_inodes;
fsid = le64_to_cpup((void *) c->sb.user_uuid.b) ^
le64_to_cpup((void *) c->sb.user_uuid.b + sizeof(u64));