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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-06-22 17:16:30 +0000 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-06-22 16:07:39 -0400 |
| commit | c6a556b88adfacd2af90be84357c8165d716c27d (patch) | |
| tree | b63d477180052d3d1edabffb51f3fdfe4f699866 /include/linux/nfs_page.h | |
| parent | ab0a3dbedc51037f3d2e22ef67717a987b3d15e2 (diff) | |
| download | lwn-c6a556b88adfacd2af90be84357c8165d716c27d.tar.gz lwn-c6a556b88adfacd2af90be84357c8165d716c27d.zip | |
[PATCH] NFS: Make searching and waiting on busy writeback requests more efficient.
Basically copies the VFS's method for tracking writebacks and applies
it to the struct nfs_page.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/nfs_page.h')
| -rw-r--r-- | include/linux/nfs_page.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 39e4895bcdb4..db40e4590ba2 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -20,6 +20,11 @@ #include <asm/atomic.h> /* + * Valid flags for the radix tree + */ +#define NFS_PAGE_TAG_WRITEBACK 1 + +/* * Valid flags for a dirty buffer */ #define PG_BUSY 0 @@ -62,6 +67,9 @@ extern int nfs_coalesce_requests(struct list_head *, struct list_head *, unsigned int); 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); + /* * Lock the page of an asynchronous request without incrementing the wb_count @@ -96,10 +104,6 @@ nfs_list_remove_request(struct nfs_page *req) { if (list_empty(&req->wb_list)) return; - if (!NFS_WBACK_BUSY(req)) { - printk(KERN_ERR "NFS: unlocked request attempted removed from list!\n"); - BUG(); - } list_del_init(&req->wb_list); req->wb_list_head = NULL; } |