diff options
| -rw-r--r-- | fs/nfs/dir.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 1c71fc21371..ee9a179ebdf 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1716,22 +1716,14 @@ int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask) if ((gfp_mask & GFP_KERNEL) != GFP_KERNEL) return (nr_to_scan == 0) ? 0 : -1; -restart: + spin_lock(&nfs_access_lru_lock); list_for_each_entry(nfsi, &nfs_access_lru_list, access_cache_inode_lru) { - struct rw_semaphore *s_umount; struct inode *inode; if (nr_to_scan-- == 0) break; - s_umount = &nfsi->vfs_inode.i_sb->s_umount; - if (!down_read_trylock(s_umount)) - continue; - inode = igrab(&nfsi->vfs_inode); - if (inode == NULL) { - up_read(s_umount); - continue; - } + inode = &nfsi->vfs_inode; spin_lock(&inode->i_lock); if (list_empty(&nfsi->access_cache_entry_lru)) goto remove_lru_entry; @@ -1745,13 +1737,10 @@ restart: else { remove_lru_entry: list_del_init(&nfsi->access_cache_inode_lru); + smp_mb__before_clear_bit(); clear_bit(NFS_INO_ACL_LRU_SET, &nfsi->flags); + smp_mb__after_clear_bit(); } - spin_unlock(&inode->i_lock); - spin_unlock(&nfs_access_lru_lock); - iput(inode); - up_read(s_umount); - goto restart; } spin_unlock(&nfs_access_lru_lock); nfs_access_free_list(&head); |