From d3b863248577504f6eecca2a464d6ddf86b71584 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 8 Oct 2014 16:07:12 +0200 Subject: [PATCH] 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 Signed-off-by: Jan Kara --- fs/quota/quota.c | 31 +++++++++++++++++++++++++++---- include/linux/quotaops.h | 2 ++ 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_ */ -- 2.11.0