Commit dd3e2c55 authored Oct 03, 2013 by Al Viro

fuse: rcu-delay freeing fuse_conn



makes ->permission() and ->d_revalidate() safety in RCU mode independent
from vfsmount_lock.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent 1adfcb03

fs/fuse/cuse.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -473,7 +473,7 @@ static int cuse_send_init(struct cuse_conn *cc)
		static void cuse_fc_release(struct fuse_conn *fc)
		{
		struct cuse_conn *cc = fc_to_cc(fc);
		kfree(cc);
		kfree_rcu(cc, fc.rcu);
		}

		/**

fs/fuse/fuse_i.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -377,6 +377,8 @@ struct fuse_conn {
		/** Refcount */
		atomic_t count;

		struct rcu_head rcu;

		/** The user id for this mount */
		kuid_t user_id;

fs/fuse/inode.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -918,7 +918,7 @@ static void fuse_send_init(struct fuse_conn fc, struct fuse_req req)

		static void fuse_free_conn(struct fuse_conn *fc)
		{
		kfree(fc);
		kfree_rcu(fc, rcu);
		}

		static int fuse_bdi_init(struct fuse_conn fc, struct super_block sb)