From be6257b251cebd2deb8c76d43e387e28e3f7412d Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Mon, 25 Jan 2016 19:24:50 +0100 Subject: quota: Add support for ->get_nextdqblk() for VFS quota Add infrastructure for supporting get_nextdqblk() callback for VFS quotas. Translate the operation into a callback to appropriate filesystem and consequently to quota format callback. Signed-off-by: Jan Kara --- fs/quota/dquot.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) (limited to 'fs/quota/dquot.c') diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 3c3b81bb6dfe..7e0137bde6d6 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -2031,6 +2031,21 @@ int dquot_commit_info(struct super_block *sb, int type) } EXPORT_SYMBOL(dquot_commit_info); +int dquot_get_next_id(struct super_block *sb, struct kqid *qid) +{ + struct quota_info *dqopt = sb_dqopt(sb); + int err; + + if (!dqopt->ops[qid->type]->get_next_id) + return -ENOSYS; + mutex_lock(&dqopt->dqio_mutex); + err = dqopt->ops[qid->type]->get_next_id(sb, qid); + mutex_unlock(&dqopt->dqio_mutex); + + return err; +} +EXPORT_SYMBOL(dquot_get_next_id); + /* * Definitions of diskquota operations. */ @@ -2042,6 +2057,7 @@ const struct dquot_operations dquot_operations = { .write_info = dquot_commit_info, .alloc_dquot = dquot_alloc, .destroy_dquot = dquot_destroy, + .get_next_id = dquot_get_next_id, }; EXPORT_SYMBOL(dquot_operations); @@ -2565,6 +2581,27 @@ int dquot_get_dqblk(struct super_block *sb, struct kqid qid, } EXPORT_SYMBOL(dquot_get_dqblk); +int dquot_get_next_dqblk(struct super_block *sb, struct kqid *qid, + struct qc_dqblk *di) +{ + struct dquot *dquot; + int err; + + if (!sb->dq_op->get_next_id) + return -ENOSYS; + err = sb->dq_op->get_next_id(sb, qid); + if (err < 0) + return err; + dquot = dqget(sb, *qid); + if (IS_ERR(dquot)) + return PTR_ERR(dquot); + do_get_dqblk(dquot, di); + dqput(dquot); + + return 0; +} +EXPORT_SYMBOL(dquot_get_next_dqblk); + #define VFS_QC_MASK \ (QC_SPACE | QC_SPC_SOFT | QC_SPC_HARD | \ QC_INO_COUNT | QC_INO_SOFT | QC_INO_HARD | \ @@ -2765,6 +2802,7 @@ const struct quotactl_ops dquot_quotactl_ops = { .get_state = dquot_get_state, .set_info = dquot_set_dqinfo, .get_dqblk = dquot_get_dqblk, + .get_nextdqblk = dquot_get_next_dqblk, .set_dqblk = dquot_set_dqblk }; EXPORT_SYMBOL(dquot_quotactl_ops); @@ -2776,6 +2814,7 @@ const struct quotactl_ops dquot_quotactl_sysfile_ops = { .get_state = dquot_get_state, .set_info = dquot_set_dqinfo, .get_dqblk = dquot_get_dqblk, + .get_nextdqblk = dquot_get_next_dqblk, .set_dqblk = dquot_set_dqblk }; EXPORT_SYMBOL(dquot_quotactl_sysfile_ops); -- cgit v1.2.3