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NFS: We must use list_for_each_entry_safe in nfs_access_cache_shrinker

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We may end up removing the current entry from nfs_access_lru_list.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2010-09-29 15:11:56 -04:00
parent a00dd6c03d
commit aa510da5bf
1 changed files with 2 additions and 2 deletions
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4
fs/nfs/dir.c
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@ -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) int nfs_access_cache_shrinker(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask)
{ {
LIST_HEAD(head); LIST_HEAD(head);
struct nfs_inode *nfsi; struct nfs_inode *nfsi, *next;
struct nfs_access_entry *cache; struct nfs_access_entry *cache;
if ((gfp_mask & GFP_KERNEL) != GFP_KERNEL) if ((gfp_mask & GFP_KERNEL) != GFP_KERNEL)
return (nr_to_scan == 0) ? 0 : -1; return (nr_to_scan == 0) ? 0 : -1;
spin_lock(&nfs_access_lru_lock); 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; struct inode *inode;
if (nr_to_scan-- == 0) if (nr_to_scan-- == 0)