static mempool_t *nfs_wdata_mempool;
static mempool_t *nfs_commit_mempool;
-struct nfs_write_data *nfs_commit_alloc(void)
+struct nfs_write_data *nfs_commitdata_alloc(void)
{
struct nfs_write_data *p = mempool_alloc(nfs_commit_mempool, GFP_NOFS);
return p;
}
-static void nfs_commit_rcu_free(struct rcu_head *head)
+void nfs_commit_free(struct nfs_write_data *p)
{
- struct nfs_write_data *p = container_of(head, struct nfs_write_data, task.u.tk_rcu);
if (p && (p->pagevec != &p->page_array[0]))
kfree(p->pagevec);
mempool_free(p, nfs_commit_mempool);
}
-void nfs_commit_free(struct nfs_write_data *wdata)
-{
- call_rcu_bh(&wdata->task.u.tk_rcu, nfs_commit_rcu_free);
-}
-
struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount)
{
struct nfs_write_data *p = mempool_alloc(nfs_wdata_mempool, GFP_NOFS);
return p;
}
-static void nfs_writedata_rcu_free(struct rcu_head *head)
+static void nfs_writedata_free(struct nfs_write_data *p)
{
- struct nfs_write_data *p = container_of(head, struct nfs_write_data, task.u.tk_rcu);
if (p && (p->pagevec != &p->page_array[0]))
kfree(p->pagevec);
mempool_free(p, nfs_wdata_mempool);
}
-static void nfs_writedata_free(struct nfs_write_data *wdata)
+void nfs_writedata_release(void *data)
{
- call_rcu_bh(&wdata->task.u.tk_rcu, nfs_writedata_rcu_free);
-}
+ struct nfs_write_data *wdata = data;
-void nfs_writedata_release(void *wdata)
-{
+ put_nfs_open_context(wdata->args.context);
nfs_writedata_free(wdata);
}
spin_unlock(&inode->i_lock);
if (!nfs_pageio_add_request(pgio, req)) {
nfs_redirty_request(req);
- nfs_end_page_writeback(page);
- nfs_clear_page_tag_locked(req);
return pgio->pg_error;
}
return 0;
/*
* Insert a write request into an inode
*/
-static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
+static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
{
struct nfs_inode *nfsi = NFS_I(inode);
int error;
error = radix_tree_insert(&nfsi->nfs_page_tree, req->wb_index, req);
- BUG_ON(error == -EEXIST);
- if (error)
- return error;
+ BUG_ON(error);
if (!nfsi->npages) {
igrab(inode);
if (nfs_have_delegation(inode, FMODE_WRITE))
set_page_private(req->wb_page, (unsigned long)req);
nfsi->npages++;
kref_get(&req->wb_kref);
- radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
- return 0;
+ radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index,
+ NFS_PAGE_TAG_LOCKED);
}
/*
}
static void
-nfs_redirty_request(struct nfs_page *req)
+nfs_mark_request_dirty(struct nfs_page *req)
{
__set_page_dirty_nobuffers(req->wb_page);
}
if (page == NULL || test_bit(PG_NEED_COMMIT, &req->wb_flags))
return 0;
- return !PageWriteback(req->wb_page);
+ return !PageWriteback(page);
}
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
return 1;
}
if (test_and_clear_bit(PG_NEED_RESCHED, &req->wb_flags)) {
- nfs_redirty_request(req);
+ nfs_mark_request_dirty(req);
return 1;
}
return 0;
/* Loop over all inode entries and see if we find
* A request for the page we wish to update
*/
+ if (new) {
+ if (radix_tree_preload(GFP_NOFS)) {
+ nfs_release_request(new);
+ return ERR_PTR(-ENOMEM);
+ }
+ }
+
spin_lock(&inode->i_lock);
req = nfs_page_find_request_locked(page);
if (req) {
error = nfs_wait_on_request(req);
nfs_release_request(req);
if (error < 0) {
- if (new)
+ if (new) {
+ radix_tree_preload_end();
nfs_release_request(new);
+ }
return ERR_PTR(error);
}
continue;
}
spin_unlock(&inode->i_lock);
- if (new)
+ if (new) {
+ radix_tree_preload_end();
nfs_release_request(new);
+ }
break;
}
if (new) {
- int error;
nfs_lock_request_dontget(new);
- error = nfs_inode_add_request(inode, new);
- if (error) {
- spin_unlock(&inode->i_lock);
- nfs_unlock_request(new);
- return ERR_PTR(error);
- }
+ nfs_inode_add_request(inode, new);
spin_unlock(&inode->i_lock);
+ radix_tree_preload_end();
req = new;
goto zero_page;
}
}
status = nfs_writepage_setup(ctx, page, offset, count);
- __set_page_dirty_nobuffers(page);
+ if (status < 0)
+ nfs_set_pageerror(page);
+ else
+ __set_page_dirty_nobuffers(page);
dprintk("NFS: nfs_updatepage returns %d (isize %Ld)\n",
status, (long long)i_size_read(inode));
- if (status < 0)
- nfs_set_pageerror(page);
return status;
}
/*
* Set up the argument/result storage required for the RPC call.
*/
-static void nfs_write_rpcsetup(struct nfs_page *req,
+static int nfs_write_rpcsetup(struct nfs_page *req,
struct nfs_write_data *data,
const struct rpc_call_ops *call_ops,
unsigned int count, unsigned int offset,
.rpc_message = &msg,
.callback_ops = call_ops,
.callback_data = data,
+ .workqueue = nfsiod_workqueue,
.flags = flags,
.priority = priority,
};
data->args.pgbase = req->wb_pgbase + offset;
data->args.pages = data->pagevec;
data->args.count = count;
- data->args.context = req->wb_context;
+ data->args.context = get_nfs_open_context(req->wb_context);
data->args.stable = NFS_UNSTABLE;
if (how & FLUSH_STABLE) {
data->args.stable = NFS_DATA_SYNC;
(unsigned long long)data->args.offset);
task = rpc_run_task(&task_setup_data);
- if (!IS_ERR(task))
- rpc_put_task(task);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
+ rpc_put_task(task);
+ return 0;
+}
+
+/* If a nfs_flush_* function fails, it should remove reqs from @head and
+ * call this on each, which will prepare them to be retried on next
+ * writeback using standard nfs.
+ */
+static void nfs_redirty_request(struct nfs_page *req)
+{
+ nfs_mark_request_dirty(req);
+ nfs_end_page_writeback(req->wb_page);
+ nfs_clear_page_tag_locked(req);
}
/*
size_t wsize = NFS_SERVER(inode)->wsize, nbytes;
unsigned int offset;
int requests = 0;
+ int ret = 0;
LIST_HEAD(list);
nfs_list_remove_request(req);
offset = 0;
nbytes = count;
do {
+ int ret2;
+
data = list_entry(list.next, struct nfs_write_data, pages);
list_del_init(&data->pages);
if (nbytes < wsize)
wsize = nbytes;
- nfs_write_rpcsetup(req, data, &nfs_write_partial_ops,
+ ret2 = nfs_write_rpcsetup(req, data, &nfs_write_partial_ops,
wsize, offset, how);
+ if (ret == 0)
+ ret = ret2;
offset += wsize;
nbytes -= wsize;
} while (nbytes != 0);
- return 0;
+ return ret;
out_bad:
while (!list_empty(&list)) {
nfs_writedata_release(data);
}
nfs_redirty_request(req);
- nfs_end_page_writeback(req->wb_page);
- nfs_clear_page_tag_locked(req);
return -ENOMEM;
}
req = nfs_list_entry(data->pages.next);
/* Set up the argument struct */
- nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
-
- return 0;
+ return nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
out_bad:
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
nfs_redirty_request(req);
- nfs_end_page_writeback(req->wb_page);
- nfs_clear_page_tag_locked(req);
}
return -ENOMEM;
}
{
struct nfs_write_data *data = calldata;
struct nfs_page *req = data->req;
- struct page *page = req->wb_page;
dprintk("NFS: write (%s/%Ld %d@%Ld)",
req->wb_context->path.dentry->d_inode->i_sb->s_id,
req->wb_bytes,
(long long)req_offset(req));
- if (nfs_writeback_done(task, data) != 0)
- return;
+ nfs_writeback_done(task, data);
+}
+
+static void nfs_writeback_release_partial(void *calldata)
+{
+ struct nfs_write_data *data = calldata;
+ struct nfs_page *req = data->req;
+ struct page *page = req->wb_page;
+ int status = data->task.tk_status;
- if (task->tk_status < 0) {
+ if (status < 0) {
nfs_set_pageerror(page);
- nfs_context_set_write_error(req->wb_context, task->tk_status);
- dprintk(", error = %d\n", task->tk_status);
+ nfs_context_set_write_error(req->wb_context, status);
+ dprintk(", error = %d\n", status);
goto out;
}
out:
if (atomic_dec_and_test(&req->wb_complete))
nfs_writepage_release(req);
+ nfs_writedata_release(calldata);
}
static const struct rpc_call_ops nfs_write_partial_ops = {
.rpc_call_done = nfs_writeback_done_partial,
- .rpc_release = nfs_writedata_release,
+ .rpc_release = nfs_writeback_release_partial,
};
/*
static void nfs_writeback_done_full(struct rpc_task *task, void *calldata)
{
struct nfs_write_data *data = calldata;
- struct nfs_page *req;
- struct page *page;
- if (nfs_writeback_done(task, data) != 0)
- return;
+ nfs_writeback_done(task, data);
+}
+
+static void nfs_writeback_release_full(void *calldata)
+{
+ struct nfs_write_data *data = calldata;
+ int status = data->task.tk_status;
/* Update attributes as result of writeback. */
while (!list_empty(&data->pages)) {
- req = nfs_list_entry(data->pages.next);
+ struct nfs_page *req = nfs_list_entry(data->pages.next);
+ struct page *page = req->wb_page;
+
nfs_list_remove_request(req);
- page = req->wb_page;
dprintk("NFS: write (%s/%Ld %d@%Ld)",
req->wb_context->path.dentry->d_inode->i_sb->s_id,
req->wb_bytes,
(long long)req_offset(req));
- if (task->tk_status < 0) {
+ if (status < 0) {
nfs_set_pageerror(page);
- nfs_context_set_write_error(req->wb_context, task->tk_status);
- dprintk(", error = %d\n", task->tk_status);
+ nfs_context_set_write_error(req->wb_context, status);
+ dprintk(", error = %d\n", status);
goto remove_request;
}
next:
nfs_clear_page_tag_locked(req);
}
+ nfs_writedata_release(calldata);
}
static const struct rpc_call_ops nfs_write_full_ops = {
.rpc_call_done = nfs_writeback_done_full,
- .rpc_release = nfs_writedata_release,
+ .rpc_release = nfs_writeback_release_full,
};
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
-void nfs_commit_release(void *wdata)
+void nfs_commitdata_release(void *data)
{
+ struct nfs_write_data *wdata = data;
+
+ put_nfs_open_context(wdata->args.context);
nfs_commit_free(wdata);
}
/*
* Set up the argument/result storage required for the RPC call.
*/
-static void nfs_commit_rpcsetup(struct list_head *head,
+static int nfs_commit_rpcsetup(struct list_head *head,
struct nfs_write_data *data,
int how)
{
.rpc_message = &msg,
.callback_ops = &nfs_commit_ops,
.callback_data = data,
+ .workqueue = nfsiod_workqueue,
.flags = flags,
.priority = priority,
};
/* Note: we always request a commit of the entire inode */
data->args.offset = 0;
data->args.count = 0;
+ data->args.context = get_nfs_open_context(first->wb_context);
data->res.count = 0;
data->res.fattr = &data->fattr;
data->res.verf = &data->verf;
dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
task = rpc_run_task(&task_setup_data);
- if (!IS_ERR(task))
- rpc_put_task(task);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
+ rpc_put_task(task);
+ return 0;
}
/*
struct nfs_write_data *data;
struct nfs_page *req;
- data = nfs_commit_alloc();
+ data = nfs_commitdata_alloc();
if (!data)
goto out_bad;
/* Set up the argument struct */
- nfs_commit_rpcsetup(head, data, how);
-
- return 0;
+ return nfs_commit_rpcsetup(head, data, how);
out_bad:
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
static void nfs_commit_done(struct rpc_task *task, void *calldata)
{
struct nfs_write_data *data = calldata;
- struct nfs_page *req;
dprintk("NFS: %5u nfs_commit_done (status %d)\n",
task->tk_pid, task->tk_status);
/* Call the NFS version-specific code */
if (NFS_PROTO(data->inode)->commit_done(task, data) != 0)
return;
+}
+
+static void nfs_commit_release(void *calldata)
+{
+ struct nfs_write_data *data = calldata;
+ struct nfs_page *req;
+ int status = data->task.tk_status;
while (!list_empty(&data->pages)) {
req = nfs_list_entry(data->pages.next);
(long long)NFS_FILEID(req->wb_context->path.dentry->d_inode),
req->wb_bytes,
(long long)req_offset(req));
- if (task->tk_status < 0) {
- nfs_context_set_write_error(req->wb_context, task->tk_status);
+ if (status < 0) {
+ nfs_context_set_write_error(req->wb_context, status);
nfs_inode_remove_request(req);
- dprintk(", error = %d\n", task->tk_status);
+ dprintk(", error = %d\n", status);
goto next;
}
}
/* We have a mismatch. Write the page again */
dprintk(" mismatch\n");
- nfs_redirty_request(req);
+ nfs_mark_request_dirty(req);
next:
nfs_clear_page_tag_locked(req);
}
+ nfs_commitdata_release(calldata);
}
static const struct rpc_call_ops nfs_commit_ops = {
};
int ret;
- BUG_ON(!PageLocked(page));
- if (clear_page_dirty_for_io(page)) {
- ret = nfs_writepage_locked(page, &wbc);
+ do {
+ if (clear_page_dirty_for_io(page)) {
+ ret = nfs_writepage_locked(page, &wbc);
+ if (ret < 0)
+ goto out_error;
+ } else if (!PagePrivate(page))
+ break;
+ ret = nfs_sync_mapping_wait(page->mapping, &wbc, how);
if (ret < 0)
- goto out;
- }
- if (!PagePrivate(page))
- return 0;
- ret = nfs_sync_mapping_wait(page->mapping, &wbc, how);
- if (ret >= 0)
- return 0;
-out:
+ goto out_error;
+ } while (PagePrivate(page));
+ return 0;
+out_error:
__mark_inode_dirty(inode, I_DIRTY_PAGES);
return ret;
}
git.openpandora.org / pandora-kernel.git / blobdiff