diff options
| -rw-r--r-- | fs/fscache/page.c | 10 | ||||
| -rw-r--r-- | include/linux/fscache-cache.h | 7 |
2 files changed, 8 insertions, 9 deletions
diff --git a/fs/fscache/page.c b/fs/fscache/page.c index 780bac6ffde..d479ab3c63e 100644 --- a/fs/fscache/page.c +++ b/fs/fscache/page.c @@ -235,7 +235,7 @@ static void fscache_release_retrieval_op(struct fscache_operation *_op) _enter("{OP%x}", op->op.debug_id); - ASSERTCMP(op->n_pages, ==, 0); + ASSERTCMP(atomic_read(&op->n_pages), ==, 0); fscache_hist(fscache_retrieval_histogram, op->start_time); if (op->context) @@ -316,7 +316,7 @@ static void fscache_do_cancel_retrieval(struct fscache_operation *_op) struct fscache_retrieval *op = container_of(_op, struct fscache_retrieval, op); - op->n_pages = 0; + atomic_set(&op->n_pages, 0); } /* @@ -406,7 +406,7 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie, _leave(" = -ENOMEM"); return -ENOMEM; } - op->n_pages = 1; + atomic_set(&op->n_pages, 1); spin_lock(&cookie->lock); @@ -533,7 +533,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie, op = fscache_alloc_retrieval(cookie, mapping, end_io_func, context); if (!op) return -ENOMEM; - op->n_pages = *nr_pages; + atomic_set(&op->n_pages, *nr_pages); spin_lock(&cookie->lock); @@ -643,7 +643,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie, op = fscache_alloc_retrieval(cookie, page->mapping, NULL, NULL); if (!op) return -ENOMEM; - op->n_pages = 1; + atomic_set(&op->n_pages, 1); spin_lock(&cookie->lock); diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index d32f70611a0..a9ff9a36b86 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -151,7 +151,7 @@ struct fscache_retrieval { void *context; /* netfs read context (pinned) */ struct list_head to_do; /* list of things to be done by the backend */ unsigned long start_time; /* time at which retrieval started */ - unsigned n_pages; /* number of pages to be retrieved */ + atomic_t n_pages; /* number of pages to be retrieved */ }; typedef int (*fscache_page_retrieval_func_t)(struct fscache_retrieval *op, @@ -195,15 +195,14 @@ static inline void fscache_enqueue_retrieval(struct fscache_retrieval *op) static inline void fscache_retrieval_complete(struct fscache_retrieval *op, int n_pages) { - op->n_pages -= n_pages; - if (op->n_pages <= 0) + atomic_sub(n_pages, &op->n_pages); + if (atomic_read(&op->n_pages) <= 0) fscache_op_complete(&op->op, true); } /** * fscache_put_retrieval - Drop a reference to a retrieval operation * @op: The retrieval operation affected - * @n_pages: The number of pages to account for * * Drop a reference to a retrieval operation. */ |