diff options
| author | Jan Kara <jack@suse.cz> | 2008-08-19 14:51:22 +0200 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2009-01-05 08:36:55 -0800 |
| commit | 74f783af95c982aef6d3a1415275650dcf511666 (patch) | |
| tree | 594e978641d31e05e170a56ec68f8c65b37bb649 /fs/dquot.c | |
| parent | 9f868f16e40e9ad8e39aebff94a4be0d96520734 (diff) | |
quota: Add callbacks for allocating and destroying dquot structures
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>
Diffstat (limited to 'fs/dquot.c')
| -rw-r--r-- | fs/dquot.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/fs/dquot.c b/fs/dquot.c index c237ccc8581..1b5fc4b7fbe 100644 --- a/fs/dquot.c +++ b/fs/dquot.c @@ -415,6 +415,16 @@ out_dqlock: return ret; } +static void dquot_destroy(struct dquot *dquot) +{ + kmem_cache_free(dquot_cachep, dquot); +} + +static inline void do_destroy_dquot(struct dquot *dquot) +{ + dquot->dq_sb->dq_op->destroy_dquot(dquot); +} + /* Invalidate all dquots on the list. Note that this function is called after * quota is disabled and pointers from inodes removed so there cannot be new * quota users. There can still be some users of quotas due to inodes being @@ -463,7 +473,7 @@ restart: remove_dquot_hash(dquot); remove_free_dquot(dquot); remove_inuse(dquot); - kmem_cache_free(dquot_cachep, dquot); + do_destroy_dquot(dquot); } spin_unlock(&dq_list_lock); } @@ -527,7 +537,7 @@ static void prune_dqcache(int count) remove_dquot_hash(dquot); remove_free_dquot(dquot); remove_inuse(dquot); - kmem_cache_free(dquot_cachep, dquot); + do_destroy_dquot(dquot); count--; head = free_dquots.prev; } @@ -625,11 +635,16 @@ we_slept: spin_unlock(&dq_list_lock); } +static struct dquot *dquot_alloc(struct super_block *sb, int type) +{ + return kmem_cache_zalloc(dquot_cachep, GFP_NOFS); +} + static struct dquot *get_empty_dquot(struct super_block *sb, int type) { struct dquot *dquot; - dquot = kmem_cache_zalloc(dquot_cachep, GFP_NOFS); + dquot = sb->dq_op->alloc_dquot(sb, type); if(!dquot) return NODQUOT; @@ -682,7 +697,7 @@ we_slept: dqstats.lookups++; spin_unlock(&dq_list_lock); if (empty) - kmem_cache_free(dquot_cachep, empty); + do_destroy_dquot(empty); } /* Wait for dq_lock - after this we know that either dquot_release() is already * finished or it will be canceled due to dq_count > 1 test */ @@ -1533,7 +1548,9 @@ struct dquot_operations dquot_operations = { .acquire_dquot = dquot_acquire, .release_dquot = dquot_release, .mark_dirty = dquot_mark_dquot_dirty, - .write_info = dquot_commit_info + .write_info = dquot_commit_info, + .alloc_dquot = dquot_alloc, + .destroy_dquot = dquot_destroy, }; static inline void set_enable_flags(struct quota_info *dqopt, int type) |