diff options
Diffstat (limited to 'fs/drop_caches.c')
| -rw-r--r-- | fs/drop_caches.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/fs/drop_caches.c b/fs/drop_caches.c index d45ef541d848..72c59fb22c81 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -18,10 +18,15 @@ int sysctl_drop_caches; static void drop_pagecache_sb(struct super_block *sb, void *unused) { - struct inode *inode, *toput_inode = NULL; + struct genradix_iter iter; + void **i; + + rcu_read_lock(); + genradix_for_each(&sb->s_inodes.items, iter, i) { + struct inode *inode = *((struct inode **) i); + if (!inode) + continue; - spin_lock(&sb->s_inode_list_lock); - list_for_each_entry(inode, &sb->s_inodes, i_sb_list) { spin_lock(&inode->i_lock); /* * We must skip inodes in unusual state. We may also skip @@ -35,17 +40,15 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused) } __iget(inode); spin_unlock(&inode->i_lock); - spin_unlock(&sb->s_inode_list_lock); + rcu_read_unlock(); invalidate_mapping_pages(inode->i_mapping, 0, -1); - iput(toput_inode); - toput_inode = inode; + iput(inode); cond_resched(); - spin_lock(&sb->s_inode_list_lock); + rcu_read_lock(); } - spin_unlock(&sb->s_inode_list_lock); - iput(toput_inode); + rcu_read_unlock(); } int drop_caches_sysctl_handler(const struct ctl_table *table, int write, |