diff options
Diffstat (limited to 'fs/fscache/page.c')
| -rw-r--r-- | fs/fscache/page.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/fs/fscache/page.c b/fs/fscache/page.c index b4e4b424160a..780bac6ffde5 100644 --- a/fs/fscache/page.c +++ b/fs/fscache/page.c @@ -163,10 +163,12 @@ static void fscache_attr_changed_op(struct fscache_operation *op) fscache_stat(&fscache_n_attr_changed_calls); - if (fscache_object_is_active(object)) { + if (fscache_object_is_active(object) && + fscache_use_cookie(object)) { fscache_stat(&fscache_n_cop_attr_changed); ret = object->cache->ops->attr_changed(object); fscache_stat_d(&fscache_n_cop_attr_changed); + fscache_unuse_cookie(object); if (ret < 0) fscache_abort_object(object); } @@ -246,6 +248,7 @@ static void fscache_release_retrieval_op(struct fscache_operation *_op) * allocate a retrieval op */ static struct fscache_retrieval *fscache_alloc_retrieval( + struct fscache_cookie *cookie, struct address_space *mapping, fscache_rw_complete_t end_io_func, void *context) @@ -260,7 +263,10 @@ static struct fscache_retrieval *fscache_alloc_retrieval( } fscache_operation_init(&op->op, NULL, fscache_release_retrieval_op); - op->op.flags = FSCACHE_OP_MYTHREAD | (1 << FSCACHE_OP_WAITING); + atomic_inc(&cookie->n_active); + op->op.flags = FSCACHE_OP_MYTHREAD | + (1UL << FSCACHE_OP_WAITING) | + (1UL << FSCACHE_OP_UNUSE_COOKIE); op->mapping = mapping; op->end_io_func = end_io_func; op->context = context; @@ -394,7 +400,8 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie, if (fscache_wait_for_deferred_lookup(cookie) < 0) return -ERESTARTSYS; - op = fscache_alloc_retrieval(page->mapping, end_io_func, context); + op = fscache_alloc_retrieval(cookie, page->mapping, + end_io_func,context); if (!op) { _leave(" = -ENOMEM"); return -ENOMEM; @@ -465,6 +472,7 @@ nobufs_unlock_dec: atomic_dec(&object->n_reads); nobufs_unlock: spin_unlock(&cookie->lock); + atomic_dec(&cookie->n_active); kfree(op); nobufs: fscache_stat(&fscache_n_retrievals_nobufs); @@ -522,7 +530,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie, if (fscache_wait_for_deferred_lookup(cookie) < 0) return -ERESTARTSYS; - op = fscache_alloc_retrieval(mapping, end_io_func, context); + op = fscache_alloc_retrieval(cookie, mapping, end_io_func, context); if (!op) return -ENOMEM; op->n_pages = *nr_pages; @@ -589,6 +597,7 @@ nobufs_unlock_dec: atomic_dec(&object->n_reads); nobufs_unlock: spin_unlock(&cookie->lock); + atomic_dec(&cookie->n_active); kfree(op); nobufs: fscache_stat(&fscache_n_retrievals_nobufs); @@ -631,7 +640,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie, if (fscache_wait_for_deferred_lookup(cookie) < 0) return -ERESTARTSYS; - op = fscache_alloc_retrieval(page->mapping, NULL, NULL); + op = fscache_alloc_retrieval(cookie, page->mapping, NULL, NULL); if (!op) return -ENOMEM; op->n_pages = 1; @@ -675,6 +684,7 @@ error: nobufs_unlock: spin_unlock(&cookie->lock); + atomic_dec(&cookie->n_active); kfree(op); nobufs: fscache_stat(&fscache_n_allocs_nobufs); @@ -876,7 +886,9 @@ int __fscache_write_page(struct fscache_cookie *cookie, fscache_operation_init(&op->op, fscache_write_op, fscache_release_write_op); - op->op.flags = FSCACHE_OP_ASYNC | (1 << FSCACHE_OP_WAITING); + op->op.flags = FSCACHE_OP_ASYNC | + (1 << FSCACHE_OP_WAITING) | + (1 << FSCACHE_OP_UNUSE_COOKIE); ret = radix_tree_preload(gfp & ~__GFP_HIGHMEM); if (ret < 0) @@ -922,6 +934,7 @@ int __fscache_write_page(struct fscache_cookie *cookie, op->op.debug_id = atomic_inc_return(&fscache_op_debug_id); op->store_limit = object->store_limit; + atomic_inc(&cookie->n_active); if (fscache_submit_op(object, &op->op) < 0) goto submit_failed; @@ -948,6 +961,7 @@ already_pending: return 0; submit_failed: + atomic_dec(&cookie->n_active); spin_lock(&cookie->stores_lock); radix_tree_delete(&cookie->stores, page->index); spin_unlock(&cookie->stores_lock); |