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ANDROID: sdcardfs: fix sdcardfs_destroy_inode for the inode RCU approach 

According to the following commits,
fs: icache RCU free inodes
vfs: fix the stupidity with i_dentry in inode destructors

sdcardfs_destroy_inode should be fixed for the fast path safety.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Change-Id: I84f43c599209d23737c7e28b499dd121cb43636d
This commit is contained in:
Gao Xiang 2017-05-10 23:01:15 +08:00 committed by LuK1337
parent 3448c61756
commit ffb8cccf42
1 changed files with 8 additions and 1 deletions
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9
fs/sdcardfs/super.c
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@ -192,9 +192,16 @@ static struct inode *sdcardfs_alloc_inode(struct super_block *sb)
return &i->vfs_inode;
}
static void i_callback(struct rcu_head *head)
{
struct inode *inode = container_of(head, struct inode, i_rcu);
kmem_cache_free(sdcardfs_inode_cachep, SDCARDFS_I(inode));
}
static void sdcardfs_destroy_inode(struct inode *inode)
{
kmem_cache_free(sdcardfs_inode_cachep, SDCARDFS_I(inode));
call_rcu(&inode->i_rcu, i_callback);
}
/* sdcardfs inode cache constructor */