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authorJan Kara <jack@suse.cz>2014-10-08 16:07:12 +0200
committerJan Kara <jack@suse.cz>2015-01-30 12:50:16 +0100
commitd3b863248577504f6eecca2a464d6ddf86b71584 (patch)
treea2ccfaebc2d005b7e6a3b1956064403b3aab7d2d
parent38e478c4489a845a5e8baf7849c286af5fed5b66 (diff)
downloadlinux-d3b863248577504f6eecca2a464d6ddf86b71584.tar.bz2
quota: Wire up ->quota_{enable,disable} callbacks into Q_QUOTA{ON,OFF}
Make Q_QUOTAON / Q_QUOTAOFF quotactl call ->quota_enable / ->quota_disable callback when provided. To match current behavior of ocfs2 & ext4 we make these quotactls turn on / off quota enforcement for appropriate quota type. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
-rw-r--r--fs/quota/quota.c31
-rw-r--r--include/linux/quotaops.h2
2 files changed, 29 insertions, 4 deletions
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index e2ae2b99e555..ce78a70a596f 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -66,18 +66,43 @@ static int quota_sync_all(int type)
return ret;
}
+unsigned int qtype_enforce_flag(int type)
+{
+ switch (type) {
+ case USRQUOTA:
+ return FS_QUOTA_UDQ_ENFD;
+ case GRPQUOTA:
+ return FS_QUOTA_GDQ_ENFD;
+ case PRJQUOTA:
+ return FS_QUOTA_PDQ_ENFD;
+ }
+ return 0;
+}
+
static int quota_quotaon(struct super_block *sb, int type, int cmd, qid_t id,
struct path *path)
{
- if (!sb->s_qcop->quota_on && !sb->s_qcop->quota_on_meta)
+ if (!sb->s_qcop->quota_on && !sb->s_qcop->quota_on_meta &&
+ !sb->s_qcop->quota_enable)
return -ENOSYS;
if (sb->s_qcop->quota_on_meta)
return sb->s_qcop->quota_on_meta(sb, type, id);
+ if (sb->s_qcop->quota_enable)
+ return sb->s_qcop->quota_enable(sb, qtype_enforce_flag(type));
if (IS_ERR(path))
return PTR_ERR(path);
return sb->s_qcop->quota_on(sb, type, id, path);
}
+static int quota_quotaoff(struct super_block *sb, int type)
+{
+ if (!sb->s_qcop->quota_off && !sb->s_qcop->quota_disable)
+ return -ENOSYS;
+ if (sb->s_qcop->quota_disable)
+ return sb->s_qcop->quota_disable(sb, qtype_enforce_flag(type));
+ return sb->s_qcop->quota_off(sb, type);
+}
+
static int quota_getfmt(struct super_block *sb, int type, void __user *addr)
{
__u32 fmt;
@@ -440,9 +465,7 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
case Q_QUOTAON:
return quota_quotaon(sb, type, cmd, id, path);
case Q_QUOTAOFF:
- if (!sb->s_qcop->quota_off)
- return -ENOSYS;
- return sb->s_qcop->quota_off(sb, type);
+ return quota_quotaoff(sb, type);
case Q_GETFMT:
return quota_getfmt(sb, type, addr);
case Q_GETINFO:
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 29e3455f7d41..ff0b665591d0 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -386,4 +386,6 @@ static inline void dquot_release_reservation_block(struct inode *inode,
__dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE);
}
+unsigned int qtype_enforce_flag(int type);
+
#endif /* _LINUX_QUOTAOPS_ */