From 5dd4056db84387975140ff2568eaa0406f07985e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 3 Mar 2010 09:05:00 -0500 Subject: dquot: cleanup space allocation / freeing routines Get rid of the alloc_space, free_space, reserve_space, claim_space and release_rsv dquot operations - they are always called from the filesystem and if a filesystem really needs their own (which none currently does) it can just call into it's own routine directly. Move shared logic into the common __dquot_alloc_space, dquot_claim_space_nodirty and __dquot_free_space low-level methods, and rationalize the wrappers around it to move as much as possible code into the common block for CONFIG_QUOTA vs not. Also rename all these helpers to be named dquot_* instead of vfs_dq_*. Signed-off-by: Christoph Hellwig Signed-off-by: Jan Kara --- Documentation/filesystems/Locking | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'Documentation/filesystems') diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 18b9d0ca0630..1192fde11638 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -462,9 +462,7 @@ in sys_read() and friends. prototypes: int (*initialize) (struct inode *, int); int (*drop) (struct inode *); - int (*alloc_space) (struct inode *, qsize_t, int); int (*alloc_inode) (const struct inode *, unsigned long); - int (*free_space) (struct inode *, qsize_t); int (*free_inode) (const struct inode *, unsigned long); int (*transfer) (struct inode *, struct iattr *); int (*write_dquot) (struct dquot *); @@ -481,9 +479,7 @@ What filesystem should expect from the generic quota functions: FS recursion Held locks when called initialize: yes maybe dqonoff_sem drop: yes - -alloc_space: ->mark_dirty() - alloc_inode: ->mark_dirty() - -free_space: ->mark_dirty() - free_inode: ->mark_dirty() - transfer: yes - write_dquot: yes dqonoff_sem or dqptr_sem @@ -495,7 +491,7 @@ write_info: yes dqonoff_sem FS recursion means calling ->quota_read() and ->quota_write() from superblock operations. -->alloc_space(), ->alloc_inode(), ->free_space(), ->free_inode() are called +->alloc_inode(), ->free_inode() are called only directly by the filesystem and do not call any fs functions only the ->mark_dirty() operation. -- cgit v1.2.3-59-g8ed1b