Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

[pandora-kernel.git] / fs / nfs / write.c

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 53ff70e..de38d63 100644 (file)
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -201,6 +201,7 @@ static int nfs_set_page_writeback(struct page *page)
                struct inode *inode = page->mapping->host;
                struct nfs_server *nfss = NFS_SERVER(inode);
 
+               page_cache_get(page);
                if (atomic_long_inc_return(&nfss->writeback) >
                                NFS_CONGESTION_ON_THRESH) {
                        set_bdi_congested(&nfss->backing_dev_info,
@@ -216,6 +217,7 @@ static void nfs_end_page_writeback(struct page *page)
        struct nfs_server *nfss = NFS_SERVER(inode);
 
        end_page_writeback(page);
+       page_cache_release(page);
        if (atomic_long_dec_return(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)
                clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC);
 }
@@ -421,6 +423,7 @@ static void
 nfs_mark_request_dirty(struct nfs_page *req)
 {
        __set_page_dirty_nobuffers(req->wb_page);
+       __mark_inode_dirty(req->wb_page->mapping->host, I_DIRTY_DATASYNC);
 }
 
 #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
@@ -660,9 +663,11 @@ static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page,
        req = nfs_setup_write_request(ctx, page, offset, count);
        if (IS_ERR(req))
                return PTR_ERR(req);
+       nfs_mark_request_dirty(req);
        /* Update file length */
        nfs_grow_file(page, offset, count);
        nfs_mark_uptodate(page, req->wb_pgbase, req->wb_bytes);
+       nfs_mark_request_dirty(req);
        nfs_clear_page_tag_locked(req);
        return 0;
 }
@@ -739,8 +744,6 @@ int nfs_updatepage(struct file *file, struct page *page,
        status = nfs_writepage_setup(ctx, page, offset, count);
        if (status < 0)
                nfs_set_pageerror(page);
-       else
-               __set_page_dirty_nobuffers(page);
 
        dprintk("NFS:       nfs_updatepage returns %d (isize %lld)\n",
                        status, (long long)i_size_read(inode));
@@ -749,13 +752,12 @@ int nfs_updatepage(struct file *file, struct page *page,
 
 static void nfs_writepage_release(struct nfs_page *req)
 {
+       struct page *page = req->wb_page;
 
-       if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req)) {
-               nfs_end_page_writeback(req->wb_page);
+       if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req))
                nfs_inode_remove_request(req);
-       } else
-               nfs_end_page_writeback(req->wb_page);
        nfs_clear_page_tag_locked(req);
+       nfs_end_page_writeback(page);
 }
 
 static int flush_task_priority(int how)
@@ -779,7 +781,6 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
                int how)
 {
        struct inode *inode = req->wb_context->path.dentry->d_inode;
-       int flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
        int priority = flush_task_priority(how);
        struct rpc_task *task;
        struct rpc_message msg = {
@@ -794,9 +795,10 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
                .callback_ops = call_ops,
                .callback_data = data,
                .workqueue = nfsiod_workqueue,
-               .flags = flags,
+               .flags = RPC_TASK_ASYNC,
                .priority = priority,
        };
+       int ret = 0;
 
        /* Set up the RPC argument and reply structs
         * NB: take care not to mess about with data->commit et al. */
@@ -835,10 +837,18 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
                (unsigned long long)data->args.offset);
 
        task = rpc_run_task(&task_setup_data);
-       if (IS_ERR(task))
-               return PTR_ERR(task);
+       if (IS_ERR(task)) {
+               ret = PTR_ERR(task);
+               goto out;
+       }
+       if (how & FLUSH_SYNC) {
+               ret = rpc_wait_for_completion_task(task);
+               if (ret == 0)
+                       ret = task->tk_status;
+       }
        rpc_put_task(task);
-       return 0;
+out:
+       return ret;
 }
 
 /* If a nfs_flush_* function fails, it should remove reqs from @head and
@@ -847,9 +857,11 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
  */
 static void nfs_redirty_request(struct nfs_page *req)
 {
+       struct page *page = req->wb_page;
+
        nfs_mark_request_dirty(req);
-       nfs_end_page_writeback(req->wb_page);
        nfs_clear_page_tag_locked(req);
+       nfs_end_page_writeback(page);
 }
 
 /*
@@ -1084,16 +1096,15 @@ static void nfs_writeback_release_full(void *calldata)
                if (nfs_write_need_commit(data)) {
                        memcpy(&req->wb_verf, &data->verf, sizeof(req->wb_verf));
                        nfs_mark_request_commit(req);
-                       nfs_end_page_writeback(page);
                        dprintk(" marked for commit\n");
                        goto next;
                }
                dprintk(" OK\n");
 remove_request:
-               nfs_end_page_writeback(page);
                nfs_inode_remove_request(req);
        next:
                nfs_clear_page_tag_locked(req);
+               nfs_end_page_writeback(page);
        }
        nfs_writedata_release(calldata);
 }
@@ -1207,7 +1218,6 @@ static int nfs_commit_rpcsetup(struct list_head *head,
 {
        struct nfs_page *first = nfs_list_entry(head->next);
        struct inode *inode = first->wb_context->path.dentry->d_inode;
-       int flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
        int priority = flush_task_priority(how);
        struct rpc_task *task;
        struct rpc_message msg = {
@@ -1222,7 +1232,7 @@ static int nfs_commit_rpcsetup(struct list_head *head,
                .callback_ops = &nfs_commit_ops,
                .callback_data = data,
                .workqueue = nfsiod_workqueue,
-               .flags = flags,
+               .flags = RPC_TASK_ASYNC,
                .priority = priority,
        };
 
@@ -1252,6 +1262,8 @@ static int nfs_commit_rpcsetup(struct list_head *head,
        task = rpc_run_task(&task_setup_data);
        if (IS_ERR(task))
                return PTR_ERR(task);
+       if (how & FLUSH_SYNC)
+               rpc_wait_for_completion_task(task);
        rpc_put_task(task);
        return 0;
 }