Merge git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[linux-2.6-omap-h63xx.git] / fs / nfs / direct.c

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index b497c71384e8df038b7059a447216b706117aa59..10ae377e68ff2e0e3253a51ef411c040a3a89f7d 100644 (file)
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -122,9 +122,10 @@ nfs_free_user_pages(struct page **pages, int npages, int do_dirty)
 {
        int i;
        for (i = 0; i < npages; i++) {
-               if (do_dirty)
-                       set_page_dirty_lock(pages[i]);
-               page_cache_release(pages[i]);
+               struct page *page = pages[i];
+               if (do_dirty && !PageCompound(page))
+                       set_page_dirty_lock(page);
+               page_cache_release(page);
        }
        kfree(pages);
 }
@@ -154,6 +155,7 @@ static struct nfs_direct_req *nfs_direct_read_alloc(size_t nbytes, unsigned int
        struct list_head *list;
        struct nfs_direct_req *dreq;
        unsigned int reads = 0;
+       unsigned int rpages = (rsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
 
        dreq = kmem_cache_alloc(nfs_direct_cachep, SLAB_KERNEL);
        if (!dreq)
@@ -167,7 +169,7 @@ static struct nfs_direct_req *nfs_direct_read_alloc(size_t nbytes, unsigned int
 
        list = &dreq->list;
        for(;;) {
-               struct nfs_read_data *data = nfs_readdata_alloc();
+               struct nfs_read_data *data = nfs_readdata_alloc(rpages);
 
                if (unlikely(!data)) {
                        while (!list_empty(list)) {
@@ -268,8 +270,6 @@ static void nfs_direct_read_schedule(struct nfs_direct_req *dreq,
                NFS_PROTO(inode)->read_setup(data);
 
                data->task.tk_cookie = (unsigned long) inode;
-               data->task.tk_calldata = data;
-               data->task.tk_release = nfs_readdata_release;
                data->complete = nfs_direct_read_result;
 
                lock_kernel();
@@ -433,7 +433,7 @@ static ssize_t nfs_direct_write_seg(struct inode *inode,
        struct nfs_writeverf first_verf;
        struct nfs_write_data *wdata;
 
-       wdata = nfs_writedata_alloc();
+       wdata = nfs_writedata_alloc(NFS_SERVER(inode)->wpages);
        if (!wdata)
                return -ENOMEM;
 
@@ -662,10 +662,10 @@ nfs_file_direct_read(struct kiocb *iocb, char __user *buf, size_t count, loff_t
                .iov_len = count,
        };
 
-       dprintk("nfs: direct read(%s/%s, %lu@%lu)\n",
+       dprintk("nfs: direct read(%s/%s, %lu@%Ld)\n",
                file->f_dentry->d_parent->d_name.name,
                file->f_dentry->d_name.name,
-               (unsigned long) count, (unsigned long) pos);
+               (unsigned long) count, (long long) pos);
 
        if (!is_sync_kiocb(iocb))
                goto out;
@@ -678,15 +678,9 @@ nfs_file_direct_read(struct kiocb *iocb, char __user *buf, size_t count, loff_t
        if (!count)
                goto out;
 
-       if (mapping->nrpages) {
-               retval = filemap_fdatawrite(mapping);
-               if (retval == 0)
-                       retval = nfs_wb_all(inode);
-               if (retval == 0)
-                       retval = filemap_fdatawait(mapping);
-               if (retval)
-                       goto out;
-       }
+       retval = nfs_sync_mapping(mapping);
+       if (retval)
+               goto out;
 
        retval = nfs_direct_read(inode, ctx, &iov, pos, 1);
        if (retval > 0)
@@ -724,9 +718,7 @@ out:
 ssize_t
 nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, size_t count, loff_t pos)
 {
-       ssize_t retval = -EINVAL;
-       loff_t *ppos = &iocb->ki_pos;
-       unsigned long limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
+       ssize_t retval;
        struct file *file = iocb->ki_filp;
        struct nfs_open_context *ctx =
                        (struct nfs_open_context *) file->private_data;
@@ -734,51 +726,42 @@ nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, size_t count,
        struct inode *inode = mapping->host;
        struct iovec iov = {
                .iov_base = (char __user *)buf,
-               .iov_len = count,
        };
 
-       dfprintk(VFS, "nfs: direct write(%s/%s(%ld), %lu@%lu)\n",
+       dfprintk(VFS, "nfs: direct write(%s/%s, %lu@%Ld)\n",
                file->f_dentry->d_parent->d_name.name,
-               file->f_dentry->d_name.name, inode->i_ino,
-               (unsigned long) count, (unsigned long) pos);
+               file->f_dentry->d_name.name,
+               (unsigned long) count, (long long) pos);
 
+       retval = -EINVAL;
        if (!is_sync_kiocb(iocb))
                goto out;
-       if (count < 0)
-               goto out;
-        if (pos < 0)
+
+       retval = generic_write_checks(file, &pos, &count, 0);
+       if (retval)
                goto out;
-       retval = -EFAULT;
-       if (!access_ok(VERIFY_READ, iov.iov_base, iov.iov_len))
+
+       retval = -EINVAL;
+       if ((ssize_t) count < 0)
                goto out;
-       retval = -EFBIG;
-       if (limit != RLIM_INFINITY) {
-               if (pos >= limit) {
-                       send_sig(SIGXFSZ, current, 0);
-                       goto out;
-               }
-               if (count > limit - (unsigned long) pos)
-                       count = limit - (unsigned long) pos;
-       }
        retval = 0;
        if (!count)
                goto out;
+       iov.iov_len = count,
 
-       if (mapping->nrpages) {
-               retval = filemap_fdatawrite(mapping);
-               if (retval == 0)
-                       retval = nfs_wb_all(inode);
-               if (retval == 0)
-                       retval = filemap_fdatawait(mapping);
-               if (retval)
-                       goto out;
-       }
+       retval = -EFAULT;
+       if (!access_ok(VERIFY_READ, iov.iov_base, iov.iov_len))
+               goto out;
+
+       retval = nfs_sync_mapping(mapping);
+       if (retval)
+               goto out;
 
        retval = nfs_direct_write(inode, ctx, &iov, pos, 1);
        if (mapping->nrpages)
                invalidate_inode_pages2(mapping);
        if (retval > 0)
-               *ppos = pos + retval;
+               iocb->ki_pos = pos + retval;
 
 out:
        return retval;