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quota: Add support for ->get_nextdqblk() for VFS quota

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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 <jack@suse.cz>
This commit is contained in:
Jan Kara
2016-01-25 19:24:50 +01:00
parent 484a10f493
commit be6257b251
5 changed files with 47 additions and 0 deletions
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3
include/linux/quota.h
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@@ -306,6 +306,7 @@ struct quota_format_ops {
int (*read_dqblk)(struct dquot *dquot); /* Read structure for one user */
int (*commit_dqblk)(struct dquot *dquot); /* Write structure for one user */
int (*release_dqblk)(struct dquot *dquot); /* Called when last reference to dquot is being dropped */
int (*get_next_id)(struct super_block *sb, struct kqid *qid); /* Get next ID with existing structure in the quota file */
};
/* Operations working with dquots */
@@ -321,6 +322,8 @@ struct dquot_operations {
* quota code only */
qsize_t *(*get_reserved_space) (struct inode *);
int (*get_projid) (struct inode *, kprojid_t *);/* Get project ID */
/* Get next ID with active quota structure */
int (*get_next_id) (struct super_block *sb, struct kqid *qid);
};
struct path;