Implement repquota for filesystems without quota files

Some filesystem do not have quota files accessible from userspace. For these
implementing ->scan_dquots() used by repquota is problematic. What we do is
that we iterate over all users and ask for quota information for each of them.
XFS already does this so make its code generic and use it for all filesystems
using quotaio_meta.c - only OCFS2 these days.

Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 6 insertions, 0 deletions

diff --git a/quotaio_meta.c b/quotaio_meta.c
index f1f714f..e52b4f4 100644
--- a/quotaio_meta.c
+++ b/quotaio_meta.c
@@ -53,9 +53,15 @@ static int meta_commit_dquot(struct dquot *dquot, int flags)
 	return vfs_set_dquot(dquot, flags);
 }
 
+static int meta_scan_dquots(struct quota_handle *h, int (*process_dquot)(struct dquot *dquot, char *dqname))
+{
+	return generic_scan_dquots(h, process_dquot, vfs_get_dquot);
+}
+
 struct quotafile_ops quotafile_ops_meta = {
 init_io:	meta_init_io,
 write_info:	meta_write_info,
 read_dquot:	meta_read_dquot,
 commit_dquot:	meta_commit_dquot,
+scan_dquots:	meta_scan_dquots,
 };