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| author | James Morris <jmorris@namei.org> | 2010-03-31 08:39:27 +1100 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2010-03-31 08:39:27 +1100 |
| commit | d25d6fa1a95f465ff1ec4458ca15e30b2c8dffec (patch) | |
| tree | 7362b182dedd825fc762ef7706830837e42943af /Documentation/filesystems/Locking | |
| parent | 225a9be24d799aa16d543c31fb09f0c9ed1d9caa (diff) | |
| parent | 2eaa9cfdf33b8d7fb7aff27792192e0019ae8fc6 (diff) | |
Merge branch 'master' into next
Diffstat (limited to 'Documentation/filesystems/Locking')
| -rw-r--r-- | Documentation/filesystems/Locking | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 18b9d0ca0630..06bbbed71206 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -460,13 +460,6 @@ in sys_read() and friends. --------------------------- dquot_operations ------------------------------- 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 *); int (*acquire_dquot) (struct dquot *); int (*release_dquot) (struct dquot *); @@ -479,13 +472,6 @@ a proper locking wrt the filesystem and call the generic quota operations. 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 acquire_dquot: yes dqonoff_sem or dqptr_sem release_dquot: yes dqonoff_sem or dqptr_sem @@ -495,10 +481,6 @@ 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 -only directly by the filesystem and do not call any fs functions only -the ->mark_dirty() operation. - More details about quota locking can be found in fs/dquot.c. --------------------------- vm_operations_struct ----------------------------- |