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Commit a50f7951 authored by Trond Myklebust's avatar Trond Myklebust
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NFS: Fix an Oops in the nfs_access_cache_shrinker() 



The nfs_access_cache_shrinker may race with nfs_access_zap_cache().

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent e2f032e9

fs/nfs/dir.c

+2 −1
Original line number Diff line number Diff line
@@ -1743,8 +1743,8 @@ int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask) 
	struct nfs_inode *nfsi;

	struct nfs_access_entry *cache;



	spin_lock(&nfs_access_lru_lock);

restart:

	spin_lock(&nfs_access_lru_lock);

	list_for_each_entry(nfsi, &nfs_access_lru_list, access_cache_inode_lru) {

		struct inode *inode;
@@ -1769,6 +1769,7 @@ int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask) 
			clear_bit(NFS_INO_ACL_LRU_SET, &nfsi->flags);

		}

		spin_unlock(&inode->i_lock);

		spin_unlock(&nfs_access_lru_lock);

		iput(inode);

		goto restart;

	}