diff options
| -rw-r--r-- | fs/notify/dnotify/dnotify.c | 12 | ||||
| -rw-r--r-- | fs/notify/inode_mark.c | 26 | ||||
| -rw-r--r-- | fs/notify/inotify/inotify_fsnotify.c | 4 | ||||
| -rw-r--r-- | fs/notify/inotify/inotify_user.c | 2 | ||||
| -rw-r--r-- | kernel/audit_tree.c | 2 | ||||
| -rw-r--r-- | kernel/audit_watch.c | 5 |
6 files changed, 19 insertions, 32 deletions
diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c index 3efb8b9..cac2eb8 100644 --- a/fs/notify/dnotify/dnotify.c +++ b/fs/notify/dnotify/dnotify.c @@ -95,11 +95,7 @@ static int dnotify_handle_event(struct fsnotify_group *group, to_tell = event->to_tell; - spin_lock(&to_tell->i_lock); fsn_mark = fsnotify_find_mark(group, to_tell); - spin_unlock(&to_tell->i_lock); - - /* unlikely since we alreay passed dnotify_should_send_event() */ if (unlikely(!fsn_mark)) return 0; dn_mark = container_of(fsn_mark, struct dnotify_mark, fsn_mark); @@ -147,11 +143,7 @@ static bool dnotify_should_send_event(struct fsnotify_group *group, if (!S_ISDIR(inode->i_mode)) return false; - spin_lock(&inode->i_lock); fsn_mark = fsnotify_find_mark(group, inode); - spin_unlock(&inode->i_lock); - - /* no mark means no dnotify watch */ if (!fsn_mark) return false; @@ -201,9 +193,7 @@ void dnotify_flush(struct file *filp, fl_owner_t id) if (!S_ISDIR(inode->i_mode)) return; - spin_lock(&inode->i_lock); fsn_mark = fsnotify_find_mark(dnotify_group, inode); - spin_unlock(&inode->i_lock); if (!fsn_mark) return; dn_mark = container_of(fsn_mark, struct dnotify_mark, fsn_mark); @@ -356,9 +346,7 @@ int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg) mutex_lock(&dnotify_mark_mutex); /* add the new_fsn_mark or find an old one. */ - spin_lock(&inode->i_lock); fsn_mark = fsnotify_find_mark(dnotify_group, inode); - spin_unlock(&inode->i_lock); if (fsn_mark) { dn_mark = container_of(fsn_mark, struct dnotify_mark, fsn_mark); spin_lock(&fsn_mark->lock); diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c index 27c1b43..ba6f983 100644 --- a/fs/notify/inode_mark.c +++ b/fs/notify/inode_mark.c @@ -261,12 +261,8 @@ void fsnotify_clear_marks_by_inode(struct inode *inode) } } -/* - * given a group and inode, find the mark associated with that combination. - * if found take a reference to that mark and return it, else return NULL - */ -struct fsnotify_mark *fsnotify_find_mark(struct fsnotify_group *group, - struct inode *inode) +static struct fsnotify_mark *fsnotify_find_mark_locked(struct fsnotify_group *group, + struct inode *inode) { struct fsnotify_mark *mark; struct hlist_node *pos; @@ -282,6 +278,22 @@ struct fsnotify_mark *fsnotify_find_mark(struct fsnotify_group *group, return NULL; } +/* + * given a group and inode, find the mark associated with that combination. + * if found take a reference to that mark and return it, else return NULL + */ +struct fsnotify_mark *fsnotify_find_mark(struct fsnotify_group *group, + struct inode *inode) +{ + struct fsnotify_mark *mark; + + spin_lock(&inode->i_lock); + mark = fsnotify_find_mark_locked(group, inode); + spin_unlock(&inode->i_lock); + + return mark; +} + void fsnotify_duplicate_mark(struct fsnotify_mark *new, struct fsnotify_mark *old) { assert_spin_locked(&old->lock); @@ -349,7 +361,7 @@ int fsnotify_add_mark(struct fsnotify_mark *mark, spin_lock(&inode->i_lock); if (!allow_dups) - lmark = fsnotify_find_mark(group, inode); + lmark = fsnotify_find_mark_locked(group, inode); if (!lmark) { mark->group = group; mark->i.inode = inode; diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c index 12dc72b..cc8f6bc 100644 --- a/fs/notify/inotify/inotify_fsnotify.c +++ b/fs/notify/inotify/inotify_fsnotify.c @@ -97,9 +97,7 @@ static int inotify_handle_event(struct fsnotify_group *group, struct fsnotify_ev to_tell = event->to_tell; - spin_lock(&to_tell->i_lock); fsn_mark = fsnotify_find_mark(group, to_tell); - spin_unlock(&to_tell->i_lock); /* race with watch removal? We already passes should_send */ if (unlikely(!fsn_mark)) return 0; @@ -147,9 +145,7 @@ static bool inotify_should_send_event(struct fsnotify_group *group, struct inode struct fsnotify_mark *fsn_mark; bool send; - spin_lock(&inode->i_lock); fsn_mark = fsnotify_find_mark(group, inode); - spin_unlock(&inode->i_lock); if (!fsn_mark) return false; diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 80d102a..ad5a1ea 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -566,9 +566,7 @@ static int inotify_update_existing_watch(struct fsnotify_group *group, if (unlikely(!mask)) return -EINVAL; - spin_lock(&inode->i_lock); fsn_mark = fsnotify_find_mark(group, inode); - spin_unlock(&inode->i_lock); if (!fsn_mark) return -ENOENT; diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c index b20fb05..80f8ac3 100644 --- a/kernel/audit_tree.c +++ b/kernel/audit_tree.c @@ -360,9 +360,7 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree) struct node *p; int n; - spin_lock(&inode->i_lock); old_entry = fsnotify_find_mark(audit_tree_group, inode); - spin_unlock(&inode->i_lock); if (!old_entry) return create_chunk(inode, tree); diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c index 24ecbeb..d85fa53 100644 --- a/kernel/audit_watch.c +++ b/kernel/audit_watch.c @@ -101,10 +101,7 @@ static inline struct audit_parent *audit_find_parent(struct inode *inode) struct audit_parent *parent = NULL; struct fsnotify_mark *entry; - spin_lock(&inode->i_lock); entry = fsnotify_find_mark(audit_watch_group, inode); - spin_unlock(&inode->i_lock); - if (entry) parent = container_of(entry, struct audit_parent, mark); @@ -520,9 +517,7 @@ static bool audit_watch_should_send_event(struct fsnotify_group *group, struct i struct fsnotify_mark *entry; bool send; - spin_lock(&inode->i_lock); entry = fsnotify_find_mark(group, inode); - spin_unlock(&inode->i_lock); if (!entry) return false; |