#define NFSDBG_FACILITY NFSDBG_VFS
-static void nfs_free_user_pages(struct page **pages, int npages, int do_dirty);
static kmem_cache_t *nfs_direct_cachep;
/*
rewrite_list; /* saved nfs_write_data structs */
struct nfs_open_context *ctx; /* file open context info */
struct kiocb * iocb; /* controlling i/o request */
- wait_queue_head_t wait; /* wait for i/o completion */
struct inode * inode; /* target file of i/o */
unsigned long user_addr; /* location of user's buffer */
size_t user_count; /* total bytes to move */
int outstanding; /* i/os we're waiting for */
ssize_t count, /* bytes actually processed */
error; /* any reported error */
+ struct completion completion; /* wait for i/o completion */
/* commit state */
struct nfs_write_data * commit_data; /* special write_data for commits */
*/
ssize_t nfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, loff_t pos, unsigned long nr_segs)
{
- struct dentry *dentry = iocb->ki_filp->f_dentry;
-
dprintk("NFS: nfs_direct_IO (%s) off/no(%Ld/%lu) EINVAL\n",
- dentry->d_name.name, (long long) pos, nr_segs);
+ iocb->ki_filp->f_dentry->d_name.name,
+ (long long) pos, nr_segs);
return -EINVAL;
}
+static void nfs_free_user_pages(struct page **pages, int npages, int do_dirty)
+{
+ int i;
+ for (i = 0; i < npages; i++) {
+ struct page *page = pages[i];
+ if (do_dirty && !PageCompound(page))
+ set_page_dirty_lock(page);
+ page_cache_release(page);
+ }
+ kfree(pages);
+}
+
static inline int nfs_get_user_pages(int rw, unsigned long user_addr, size_t size, struct page ***pages)
{
int result = -ENOMEM;
page_count, (rw == READ), 0,
*pages, NULL);
up_read(¤t->mm->mmap_sem);
- /*
- * If we got fewer pages than expected from get_user_pages(),
- * the user buffer runs off the end of a mapping; return EFAULT.
- */
- if (result >= 0 && result < page_count) {
- nfs_free_user_pages(*pages, result, 0);
+ if (result != page_count) {
+ /*
+ * If we got fewer pages than expected from
+ * get_user_pages(), the user buffer runs off the
+ * end of a mapping; return EFAULT.
+ */
+ if (result >= 0) {
+ nfs_free_user_pages(*pages, result, 0);
+ result = -EFAULT;
+ } else
+ kfree(*pages);
*pages = NULL;
- result = -EFAULT;
}
}
return result;
}
-static void nfs_free_user_pages(struct page **pages, int npages, int do_dirty)
-{
- int i;
- for (i = 0; i < npages; i++) {
- struct page *page = pages[i];
- if (do_dirty && !PageCompound(page))
- set_page_dirty_lock(page);
- page_cache_release(page);
- }
- kfree(pages);
-}
-
static inline struct nfs_direct_req *nfs_direct_req_alloc(void)
{
struct nfs_direct_req *dreq;
return NULL;
kref_init(&dreq->kref);
- init_waitqueue_head(&dreq->wait);
+ init_completion(&dreq->completion);
INIT_LIST_HEAD(&dreq->list);
INIT_LIST_HEAD(&dreq->rewrite_list);
dreq->iocb = NULL;
if (dreq->iocb)
goto out;
- result = wait_event_interruptible(dreq->wait, (dreq->outstanding == 0));
+ result = wait_for_completion_interruptible(&dreq->completion);
if (!result)
result = dreq->error;
if (!res)
res = (long) dreq->count;
aio_complete(dreq->iocb, res, 0);
- } else
- wake_up(&dreq->wait);
+ }
+ complete_all(&dreq->completion);
kref_put(&dreq->kref, nfs_direct_req_release);
}
rpc_execute(&data->task);
unlock_kernel();
- dfprintk(VFS, "NFS: %4d initiated direct read call (req %s/%Ld, %u bytes @ offset %Lu)\n",
+ dfprintk(VFS, "NFS: %5u initiated direct read call (req %s/%Ld, %zu bytes @ offset %Lu)\n",
data->task.tk_pid,
inode->i_sb->s_id,
(long long)NFS_FILEID(inode),
static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
{
struct nfs_write_data *data = dreq->commit_data;
- struct rpc_task *task = &data->task;
data->inode = dreq->inode;
data->cred = dreq->ctx->cred;
/* Note: task.tk_ops->rpc_release will free dreq->commit_data */
dreq->commit_data = NULL;
- dprintk("NFS: %5u initiated commit call\n", task->tk_pid);
+ dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
lock_kernel();
rpc_execute(&data->task);
rpc_execute(&data->task);
unlock_kernel();
- dfprintk(VFS, "NFS: %4d initiated direct write call (req %s/%Ld, %u bytes @ offset %Lu)\n",
+ dfprintk(VFS, "NFS: %5u initiated direct write call (req %s/%Ld, %zu bytes @ offset %Lu)\n",
data->task.tk_pid,
inode->i_sb->s_id,
(long long)NFS_FILEID(inode),
if (retval)
goto out;
- page_count = nfs_get_user_pages(READ, (unsigned long) buf,
+ retval = nfs_get_user_pages(READ, (unsigned long) buf,
count, &pages);
- if (page_count < 0) {
- nfs_free_user_pages(pages, 0, 0);
- retval = page_count;
+ if (retval < 0)
goto out;
- }
+ page_count = retval;
retval = nfs_direct_read(iocb, (unsigned long) buf, count, pos,
pages, page_count);
if (retval)
goto out;
- page_count = nfs_get_user_pages(WRITE, (unsigned long) buf,
+ retval = nfs_get_user_pages(WRITE, (unsigned long) buf,
count, &pages);
- if (page_count < 0) {
- nfs_free_user_pages(pages, 0, 0);
- retval = page_count;
+ if (retval < 0)
goto out;
- }
+ page_count = retval;
retval = nfs_direct_write(iocb, (unsigned long) buf, count,
pos, pages, page_count);
{
nfs_direct_cachep = kmem_cache_create("nfs_direct_cache",
sizeof(struct nfs_direct_req),
- 0, SLAB_RECLAIM_ACCOUNT,
+ 0, (SLAB_RECLAIM_ACCOUNT|
+ SLAB_MEM_SPREAD),
NULL, NULL);
if (nfs_direct_cachep == NULL)
return -ENOMEM;
projects / linux-2.6 / blobdiff