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quota: Add callbacks for allocating and destroying dquot structures

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Some filesystems would like to keep private information together with each
dquot. Add callbacks alloc_dquot and destroy_dquot allowing filesystem to
allocate larger dquots from their private slab in a similar fashion we
currently allocate inodes.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Jan Kara
2008-08-19 14:51:22 +02:00
committed by Mark Fasheh
parent 9f868f16e4
commit 74f783af95
2 changed files with 24 additions and 5 deletions
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include/linux/quota.h
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@@ -292,6 +292,8 @@ struct dquot_operations {
int (*free_inode) (const struct inode *, unsigned long);
int (*transfer) (struct inode *, struct iattr *);
int (*write_dquot) (struct dquot *); /* Ordinary dquot write */
struct dquot *(*alloc_dquot)(struct super_block *, int); /* Allocate memory for new dquot */
void (*destroy_dquot)(struct dquot *); /* Free memory for dquot */
int (*acquire_dquot) (struct dquot *); /* Quota is going to be created on disk */
int (*release_dquot) (struct dquot *); /* Quota is going to be deleted from disk */
int (*mark_dirty) (struct dquot *); /* Dquot is marked dirty */