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| author |   Eric Paris <eparis@redhat.com> | 2010-07-28 10:18:38 -0400 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2010-07-28 10:18:52 -0400 |
| commit | 75c1be487a690db43da2c1234fcacd84c982803c (patch) | |
| tree | b38ce47f157d3b0eff7ac6eb4756a4b390ac35ae /fs/notify/fsnotify.h | |
| parent | fsnotify: use an explicit flag to indicate fsnotify_destroy_mark has been called (diff) | |
| download | linux-dev-75c1be487a690db43da2c1234fcacd84c982803c.tar.xz linux-dev-75c1be487a690db43da2c1234fcacd84c982803c.zip | |
fsnotify: srcu to protect read side of inode and vfsmount locks
Currently reading the inode->i_fsnotify_marks or
vfsmount->mnt_fsnotify_marks lists are protected by a spinlock on both the
read and the write side. This patch protects the read side of those lists
with a new single srcu.
Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'fs/notify/fsnotify.h')
| -rw-r--r-- | fs/notify/fsnotify.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/notify/fsnotify.h b/fs/notify/fsnotify.h index 1be54f6f9e7d..7eed86f942ba 100644 --- a/fs/notify/fsnotify.h +++ b/fs/notify/fsnotify.h @@ -6,8 +6,6 @@ #include <linux/srcu.h> #include <linux/types.h> -/* protects reads of fsnotify_groups */ -extern struct srcu_struct fsnotify_grp_srcu; /* all groups which receive inode fsnotify events */ extern struct list_head fsnotify_inode_groups; /* all groups which receive vfsmount fsnotify events */ @@ -20,6 +18,9 @@ extern __u32 fsnotify_vfsmount_mask; /* destroy all events sitting in this groups notification queue */ extern void fsnotify_flush_notify(struct fsnotify_group *group); +/* protects reads of inode and vfsmount marks list */ +extern struct srcu_struct fsnotify_mark_srcu; + extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark, __u32 mask); /* add a mark to an inode */ |