quota: quota core changes for quotaon on remount
Currently, we just turn quotas off on remount of filesystem to read-only
state. The patch below adds necessary framework so that we can turn quotas
off on remount RO but we are able to automatically reenable them again when
filesystem is remounted to RW state. All we need to do is to keep references
to inodes of quota files when remounting RO and using these references to
reenable quotas when remounting RW.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/quota.c b/fs/quota.c
index 84f28dd..db1cc9f 100644
--- a/fs/quota.c
+++ b/fs/quota.c
@@ -69,7 +69,6 @@
switch (cmd) {
case Q_GETFMT:
case Q_GETINFO:
- case Q_QUOTAOFF:
case Q_SETINFO:
case Q_SETQUOTA:
case Q_GETQUOTA:
@@ -229,12 +228,12 @@
if (IS_ERR(pathname = getname(addr)))
return PTR_ERR(pathname);
- ret = sb->s_qcop->quota_on(sb, type, id, pathname);
+ ret = sb->s_qcop->quota_on(sb, type, id, pathname, 0);
putname(pathname);
return ret;
}
case Q_QUOTAOFF:
- return sb->s_qcop->quota_off(sb, type);
+ return sb->s_qcop->quota_off(sb, type, 0);
case Q_GETFMT: {
__u32 fmt;