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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-05 16:20:53 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-05 16:20:53 -0500
commite213e26ab3988c516c06eba4dcd030ac052f6dc9 (patch)
tree6e26fbdbb842b387697d73daf6e70cf718269a77 /Documentation/filesystems
parentc812a51d11bbe983f4c24e32b59b265705ddd3c2 (diff)
parentefd8f0e6f6c1faa041f228d7113bd3a9db802d49 (diff)
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: (33 commits) quota: stop using QUOTA_OK / NO_QUOTA dquot: cleanup dquot initialize routine dquot: move dquot initialization responsibility into the filesystem dquot: cleanup dquot drop routine dquot: move dquot drop responsibility into the filesystem dquot: cleanup dquot transfer routine dquot: move dquot transfer responsibility into the filesystem dquot: cleanup inode allocation / freeing routines dquot: cleanup space allocation / freeing routines ext3: add writepage sanity checks ext3: Truncate allocated blocks if direct IO write fails to update i_size quota: Properly invalidate caches even for filesystems with blocksize < pagesize quota: generalize quota transfer interface quota: sb_quota state flags cleanup jbd: Delay discarding buffers in journal_unmap_buffer ext3: quota_write cross block boundary behaviour quota: drop permission checks from xfs_fs_set_xstate/xfs_fs_set_xquota quota: split out compat_sys_quotactl support from quota.c quota: split out netlink notification support from quota.c quota: remove invalid optimization from quota_sync_all ... Fixed trivial conflicts in fs/namei.c and fs/ufs/inode.c
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/Locking18
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.
460 460
461--------------------------- dquot_operations ------------------------------- 461--------------------------- dquot_operations -------------------------------
462prototypes: 462prototypes:
463 int (*initialize) (struct inode *, int);
464 int (*drop) (struct inode *);
465 int (*alloc_space) (struct inode *, qsize_t, int);
466 int (*alloc_inode) (const struct inode *, unsigned long);
467 int (*free_space) (struct inode *, qsize_t);
468 int (*free_inode) (const struct inode *, unsigned long);
469 int (*transfer) (struct inode *, struct iattr *);
470 int (*write_dquot) (struct dquot *); 463 int (*write_dquot) (struct dquot *);
471 int (*acquire_dquot) (struct dquot *); 464 int (*acquire_dquot) (struct dquot *);
472 int (*release_dquot) (struct dquot *); 465 int (*release_dquot) (struct dquot *);
@@ -479,13 +472,6 @@ a proper locking wrt the filesystem and call the generic quota operations.
479What filesystem should expect from the generic quota functions: 472What filesystem should expect from the generic quota functions:
480 473
481 FS recursion Held locks when called 474 FS recursion Held locks when called
482initialize: yes maybe dqonoff_sem
483drop: yes -
484alloc_space: ->mark_dirty() -
485alloc_inode: ->mark_dirty() -
486free_space: ->mark_dirty() -
487free_inode: ->mark_dirty() -
488transfer: yes -
489write_dquot: yes dqonoff_sem or dqptr_sem 475write_dquot: yes dqonoff_sem or dqptr_sem
490acquire_dquot: yes dqonoff_sem or dqptr_sem 476acquire_dquot: yes dqonoff_sem or dqptr_sem
491release_dquot: yes dqonoff_sem or dqptr_sem 477release_dquot: yes dqonoff_sem or dqptr_sem
@@ -495,10 +481,6 @@ write_info: yes dqonoff_sem
495FS recursion means calling ->quota_read() and ->quota_write() from superblock 481FS recursion means calling ->quota_read() and ->quota_write() from superblock
496operations. 482operations.
497 483
498->alloc_space(), ->alloc_inode(), ->free_space(), ->free_inode() are called
499only directly by the filesystem and do not call any fs functions only
500the ->mark_dirty() operation.
501
502More details about quota locking can be found in fs/dquot.c. 484More details about quota locking can be found in fs/dquot.c.
503 485
504--------------------------- vm_operations_struct ----------------------------- 486--------------------------- vm_operations_struct -----------------------------