diff options
Diffstat (limited to 'include/linux/nfs_page.h')
| -rw-r--r-- | include/linux/nfs_page.h | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index bd193af8016..78e60798d10 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -16,12 +16,13 @@ #include <linux/sunrpc/auth.h> #include <linux/nfs_xdr.h> -#include <asm/atomic.h> +#include <linux/kref.h> /* * Valid flags for the radix tree */ -#define NFS_PAGE_TAG_WRITEBACK 0 +#define NFS_PAGE_TAG_LOCKED 0 +#define NFS_PAGE_TAG_COMMIT 1 /* * Valid flags for a dirty buffer @@ -33,8 +34,7 @@ struct nfs_inode; struct nfs_page { - struct list_head wb_list, /* Defines state of page: */ - *wb_list_head; /* read/write/commit */ + struct list_head wb_list; /* Defines state of page: */ struct page *wb_page; /* page to read in/write out */ struct nfs_open_context *wb_context; /* File state context info */ atomic_t wb_complete; /* i/os we're waiting for */ @@ -42,7 +42,7 @@ struct nfs_page { unsigned int wb_offset, /* Offset & ~PAGE_CACHE_MASK */ wb_pgbase, /* Start of page data */ wb_bytes; /* Length of request */ - atomic_t wb_count; /* reference count */ + struct kref wb_kref; /* reference count */ unsigned long wb_flags; struct nfs_writeverf wb_verf; /* Commit cookie */ }; @@ -71,8 +71,8 @@ extern void nfs_clear_request(struct nfs_page *req); extern void nfs_release_request(struct nfs_page *req); -extern int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *head, struct list_head *dst, - pgoff_t idx_start, unsigned int npages); +extern int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *dst, + pgoff_t idx_start, unsigned int npages, int tag); extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc, struct inode *inode, int (*doio)(struct inode *, struct list_head *, unsigned int, size_t, int), @@ -84,12 +84,11 @@ extern void nfs_pageio_complete(struct nfs_pageio_descriptor *desc); extern void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *, pgoff_t); extern int nfs_wait_on_request(struct nfs_page *); extern void nfs_unlock_request(struct nfs_page *req); -extern int nfs_set_page_writeback_locked(struct nfs_page *req); -extern void nfs_clear_page_writeback(struct nfs_page *req); +extern void nfs_clear_page_tag_locked(struct nfs_page *req); /* - * Lock the page of an asynchronous request without incrementing the wb_count + * Lock the page of an asynchronous request without getting a new reference */ static inline int nfs_lock_request_dontget(struct nfs_page *req) @@ -98,14 +97,14 @@ nfs_lock_request_dontget(struct nfs_page *req) } /* - * Lock the page of an asynchronous request + * Lock the page of an asynchronous request and take a reference */ static inline int nfs_lock_request(struct nfs_page *req) { if (test_and_set_bit(PG_BUSY, &req->wb_flags)) return 0; - atomic_inc(&req->wb_count); + kref_get(&req->wb_kref); return 1; } @@ -118,7 +117,6 @@ static inline void nfs_list_add_request(struct nfs_page *req, struct list_head *head) { list_add_tail(&req->wb_list, head); - req->wb_list_head = head; } @@ -132,7 +130,6 @@ nfs_list_remove_request(struct nfs_page *req) if (list_empty(&req->wb_list)) return; list_del_init(&req->wb_list); - req->wb_list_head = NULL; } static inline struct nfs_page * |