From 511728d778e8d441e42df68101722548a0c97fe3 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 10 Feb 2012 12:11:12 -0800 Subject: userns: Convert the qnx4 filesystem to use kuid/kgid where appropriate Acked-by: Anders Larsen Acked-by: Serge Hallyn Signed-off-by: Eric W. Biederman --- fs/qnx4/inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/qnx4/inode.c') diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index 552e994e3aa..5c3c7b02e17 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -312,8 +312,8 @@ struct inode *qnx4_iget(struct super_block *sb, unsigned long ino) (ino % QNX4_INODES_PER_BLOCK); inode->i_mode = le16_to_cpu(raw_inode->di_mode); - inode->i_uid = (uid_t)le16_to_cpu(raw_inode->di_uid); - inode->i_gid = (gid_t)le16_to_cpu(raw_inode->di_gid); + i_uid_write(inode, (uid_t)le16_to_cpu(raw_inode->di_uid)); + i_gid_write(inode, (gid_t)le16_to_cpu(raw_inode->di_gid)); set_nlink(inode, le16_to_cpu(raw_inode->di_nlink)); inode->i_size = le32_to_cpu(raw_inode->di_size); inode->i_mtime.tv_sec = le32_to_cpu(raw_inode->di_mtime); -- cgit v1.2.3 From 8c0a85377048b64c880e76ec7368904fe46d0b94 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 26 Sep 2012 11:33:07 +1000 Subject: fs: push rcu_barrier() from deactivate_locked_super() to filesystems There's no reason to call rcu_barrier() on every deactivate_locked_super(). We only need to make sure that all delayed rcu free inodes are flushed before we destroy related cache. Removing rcu_barrier() from deactivate_locked_super() affects some fast paths. E.g. on my machine exit_group() of a last process in IPC namespace takes 0.07538s. rcu_barrier() takes 0.05188s of that time. Signed-off-by: Kirill A. Shutemov Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Al Viro --- fs/qnx4/inode.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/qnx4/inode.c') diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index 552e994e3aa..9534b4f7657 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -391,6 +391,11 @@ static int init_inodecache(void) static void destroy_inodecache(void) { + /* + * Make sure all delayed rcu free inodes are flushed before we + * destroy cache. + */ + rcu_barrier(); kmem_cache_destroy(qnx4_inode_cachep); } -- cgit v1.2.3