diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-07-18 12:19:57 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-07-18 12:20:01 +0200 |
| commit | 45bceffc3013bda7d2ebc7802e9b153b674e2d44 (patch) | |
| tree | 222d7dd8fd300925cbf12cdc0fba5bee2528997e /Documentation/filesystems/Locking | |
| parent | 6f2f3cf00ee32f75ba007a46bab88a54d68a5deb (diff) | |
| parent | 78af08d90b8f745044b1274430bc4bc6b2b27aca (diff) | |
Merge branch 'linus' into tracing/core
Merge reason: tracing/core was on an older, pre-rc1 base.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/filesystems/Locking')
| -rw-r--r-- | Documentation/filesystems/Locking | 43 |
1 files changed, 22 insertions, 21 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 229d7b7c50a..18b9d0ca063 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -109,27 +109,28 @@ prototypes: locking rules: All may block. - BKL s_lock s_umount -alloc_inode: no no no -destroy_inode: no -dirty_inode: no (must not sleep) -write_inode: no -drop_inode: no !!!inode_lock!!! -delete_inode: no -put_super: yes yes no -write_super: no yes read -sync_fs: no no read -freeze_fs: ? -unfreeze_fs: ? -statfs: no no no -remount_fs: yes yes maybe (see below) -clear_inode: no -umount_begin: yes no no -show_options: no (vfsmount->sem) -quota_read: no no no (see below) -quota_write: no no no (see below) - -->remount_fs() will have the s_umount lock if it's already mounted. + None have BKL + s_umount +alloc_inode: +destroy_inode: +dirty_inode: (must not sleep) +write_inode: +drop_inode: !!!inode_lock!!! +delete_inode: +put_super: write +write_super: read +sync_fs: read +freeze_fs: read +unfreeze_fs: read +statfs: no +remount_fs: maybe (see below) +clear_inode: +umount_begin: no +show_options: no (namespace_sem) +quota_read: no (see below) +quota_write: no (see below) + +->remount_fs() will have the s_umount exclusive lock if it's already mounted. When called from get_sb_single, it does NOT have the s_umount lock. ->quota_read() and ->quota_write() functions are both guaranteed to be the only ones operating on the quota file by the quota code (via |