leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

9p: switch ->writepage() to direct use of p9_client_write()

Browse Source 
Don't mess with kmap() - just use ITER_BVEC.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-04-01 21:54:42 -04:00
parent 070b3656cf
commit 371098c6a6
1 changed files with 13 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
fs/9p/vfs_addr.c
View File

@ -161,41 +161,32 @@ static void v9fs_invalidate_page(struct page *page, unsigned int offset,
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);
p9_client_write(v9inode->writeback_fid, page_offset(page), &from, &err);
set_fs(old_fs);
kunmap(page);
end_page_writeback(page);
return retval;
return err;
}
static int v9fs_vfs_writepage(struct page *page, struct writeback_control *wbc)