aboutsummaryrefslogtreecommitdiff
path: root/fs/nfs/pagelist.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/nfs/pagelist.c')
-rw-r--r--fs/nfs/pagelist.c117
1 files changed, 1 insertions, 116 deletions
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 040b6b79c75e..04124f226665 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -188,102 +188,6 @@ nfs_async_iocounter_wait(struct rpc_task *task, struct nfs_lock_context *l_ctx)
EXPORT_SYMBOL_GPL(nfs_async_iocounter_wait);
/*
- * nfs_page_lock_head_request - page lock the head of the page group
- * @req: any member of the page group
- */
-struct nfs_page *
-nfs_page_group_lock_head(struct nfs_page *req)
-{
- struct nfs_page *head = req->wb_head;
-
- while (!nfs_lock_request(head)) {
- int ret = nfs_wait_on_request(head);
- if (ret < 0)
- return ERR_PTR(ret);
- }
- if (head != req)
- kref_get(&head->wb_kref);
- return head;
-}
-
-/*
- * nfs_unroll_locks - unlock all newly locked reqs and wait on @req
- * @head: head request of page group, must be holding head lock
- * @req: request that couldn't lock and needs to wait on the req bit lock
- *
- * This is a helper function for nfs_lock_and_join_requests
- * returns 0 on success, < 0 on error.
- */
-static void
-nfs_unroll_locks(struct nfs_page *head, struct nfs_page *req)
-{
- struct nfs_page *tmp;
-
- /* relinquish all the locks successfully grabbed this run */
- for (tmp = head->wb_this_page ; tmp != req; tmp = tmp->wb_this_page) {
- if (!kref_read(&tmp->wb_kref))
- continue;
- nfs_unlock_and_release_request(tmp);
- }
-}
-
-/*
- * nfs_page_group_lock_subreq - try to lock a subrequest
- * @head: head request of page group
- * @subreq: request to lock
- *
- * This is a helper function for nfs_lock_and_join_requests which
- * must be called with the head request and page group both locked.
- * On error, it returns with the page group unlocked.
- */
-static int
-nfs_page_group_lock_subreq(struct nfs_page *head, struct nfs_page *subreq)
-{
- int ret;
-
- if (!kref_get_unless_zero(&subreq->wb_kref))
- return 0;
- while (!nfs_lock_request(subreq)) {
- nfs_page_group_unlock(head);
- ret = nfs_wait_on_request(subreq);
- if (!ret)
- ret = nfs_page_group_lock(head);
- if (ret < 0) {
- nfs_unroll_locks(head, subreq);
- nfs_release_request(subreq);
- return ret;
- }
- }
- return 0;
-}
-
-/*
- * nfs_page_group_lock_subrequests - try to lock the subrequests
- * @head: head request of page group
- *
- * This is a helper function for nfs_lock_and_join_requests which
- * must be called with the head request locked.
- */
-int nfs_page_group_lock_subrequests(struct nfs_page *head)
-{
- struct nfs_page *subreq;
- int ret;
-
- ret = nfs_page_group_lock(head);
- if (ret < 0)
- return ret;
- /* lock each request in the page group */
- for (subreq = head->wb_this_page; subreq != head;
- subreq = subreq->wb_this_page) {
- ret = nfs_page_group_lock_subreq(head, subreq);
- if (ret < 0)
- return ret;
- }
- nfs_page_group_unlock(head);
- return 0;
-}
-
-/*
* nfs_page_set_headlock - set the request PG_HEADLOCK
* @req: request that is to be locked
*
@@ -569,7 +473,7 @@ struct nfs_page *nfs_page_create_from_folio(struct nfs_open_context *ctx,
if (IS_ERR(l_ctx))
return ERR_CAST(l_ctx);
- ret = nfs_page_create(l_ctx, offset, folio_index(folio), offset, count);
+ ret = nfs_page_create(l_ctx, offset, folio->index, offset, count);
if (!IS_ERR(ret)) {
nfs_page_assign_folio(ret, folio);
nfs_page_group_init(ret, NULL);
@@ -694,25 +598,6 @@ void nfs_release_request(struct nfs_page *req)
}
EXPORT_SYMBOL_GPL(nfs_release_request);
-/**
- * nfs_wait_on_request - Wait for a request to complete.
- * @req: request to wait upon.
- *
- * Interruptible by fatal signals only.
- * The user is responsible for holding a count on the request.
- */
-int
-nfs_wait_on_request(struct nfs_page *req)
-{
- if (!test_bit(PG_BUSY, &req->wb_flags))
- return 0;
- set_bit(PG_CONTENDED2, &req->wb_flags);
- smp_mb__after_atomic();
- return wait_on_bit_io(&req->wb_flags, PG_BUSY,
- TASK_UNINTERRUPTIBLE);
-}
-EXPORT_SYMBOL_GPL(nfs_wait_on_request);
-
/*
* nfs_generic_pg_test - determine if requests can be coalesced
* @desc: pointer to descriptor