9p: switch ->writepage() to direct use of p9_client_write()
Don't mess with kmap() - just use ITER_BVEC.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index ff1a5ba..0e153f0 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -161,41 +161,32 @@
static int v9fs_vfs_writepage_locked(struct page *page)
{
- char *buffer;
- int retval, len;
- loff_t offset, size;
- mm_segment_t old_fs;
- struct v9fs_inode *v9inode;
struct inode *inode = page->mapping->host;
+ struct v9fs_inode *v9inode = V9FS_I(inode);
+ loff_t size = i_size_read(inode);
+ struct iov_iter from;
+ struct bio_vec bvec;
+ int err, len;
- v9inode = V9FS_I(inode);
- size = i_size_read(inode);
if (page->index == size >> PAGE_CACHE_SHIFT)
len = size & ~PAGE_CACHE_MASK;
else
len = PAGE_CACHE_SIZE;
- set_page_writeback(page);
+ bvec.bv_page = page;
+ bvec.bv_offset = 0;
+ bvec.bv_len = len;
+ iov_iter_bvec(&from, ITER_BVEC | WRITE, &bvec, 1, len);
- buffer = kmap(page);
- offset = page_offset(page);
-
- old_fs = get_fs();
- set_fs(get_ds());
/* We should have writeback_fid always set */
BUG_ON(!v9inode->writeback_fid);
- retval = v9fs_file_write_internal(inode,
- v9inode->writeback_fid,
- (__force const char __user *)buffer,
- len, &offset, 0);
- if (retval > 0)
- retval = 0;
+ set_page_writeback(page);
- set_fs(old_fs);
- kunmap(page);
+ p9_client_write(v9inode->writeback_fid, page_offset(page), &from, &err);
+
end_page_writeback(page);
- return retval;
+ return err;
}
static int v9fs_vfs_writepage(struct page *page, struct writeback_control *wbc)