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authorJan Kara <jack@suse.cz>2017-03-15 09:16:27 +0100
committerJan Kara <jack@suse.cz>2017-04-10 17:37:35 +0200
commita242677bb1e6faa9bd82bd33afb2621071258231 (patch)
tree853a675a0c61c182b834b1ced7d7e745c1eb3133 /fs/notify/vfsmount_mark.c
parent0810b4f9f207910d90aee56d312d25f334796363 (diff)
fsnotify: Move locking into fsnotify_recalc_mask()
Move locking of locks protecting a list of marks into fsnotify_recalc_mask(). This reduces code churn in the following patch which changes the lock protecting the list of marks. Reviewed-by: Miklos Szeredi <mszeredi@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify/vfsmount_mark.c')
-rw-r--r--fs/notify/vfsmount_mark.c13
1 files changed, 3 insertions, 10 deletions
diff --git a/fs/notify/vfsmount_mark.c b/fs/notify/vfsmount_mark.c
index 49ccbdb74f82..ffe0d7098cba 100644
--- a/fs/notify/vfsmount_mark.c
+++ b/fs/notify/vfsmount_mark.c
@@ -34,17 +34,9 @@ void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group)
fsnotify_clear_marks_by_group_flags(group, FSNOTIFY_OBJ_TYPE_VFSMOUNT);
}
-/*
- * Recalculate the mnt->mnt_fsnotify_mask, or the mask of all FS_* event types
- * any notifier is interested in hearing for this mount point
- */
void fsnotify_recalc_vfsmount_mask(struct vfsmount *mnt)
{
- struct mount *m = real_mount(mnt);
-
- spin_lock(&mnt->mnt_root->d_lock);
- m->mnt_fsnotify_mask = fsnotify_recalc_mask(m->mnt_fsnotify_marks);
- spin_unlock(&mnt->mnt_root->d_lock);
+ fsnotify_recalc_mask(real_mount(mnt)->mnt_fsnotify_marks);
}
void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark)
@@ -60,8 +52,9 @@ void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark)
hlist_del_init_rcu(&mark->obj_list);
mark->connector = NULL;
- m->mnt_fsnotify_mask = fsnotify_recalc_mask(m->mnt_fsnotify_marks);
spin_unlock(&mnt->mnt_root->d_lock);
+
+ fsnotify_recalc_mask(m->mnt_fsnotify_marks);
}
/*