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Commit aa510da5 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: We must use list_for_each_entry_safe in nfs_access_cache_shrinker 



We may end up removing the current entry from nfs_access_lru_list.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent a00dd6c0

fs/nfs/dir.c

+2 −2
Original line number Diff line number Diff line
@@ -1788,14 +1788,14 @@ static void nfs_access_free_list(struct list_head *head) 
int nfs_access_cache_shrinker(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask)

{

	LIST_HEAD(head);

	struct nfs_inode *nfsi;

	struct nfs_inode *nfsi, *next;

	struct nfs_access_entry *cache;



	if ((gfp_mask & GFP_KERNEL) != GFP_KERNEL)

		return (nr_to_scan == 0) ? 0 : -1;



	spin_lock(&nfs_access_lru_lock);

	list_for_each_entry(nfsi, &nfs_access_lru_list, access_cache_inode_lru) {

	list_for_each_entry_safe(nfsi, next, &nfs_access_lru_list, access_cache_inode_lru) {

		struct inode *inode;



		if (nr_to_scan-- == 0)