mirror of https://gitee.com/openkylin/linux.git
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2000-2002,2005-2006 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#include "xfs.h"
|
|
#include "xfs_vnodeops.h"
|
|
#include "xfs_bmap_btree.h"
|
|
#include "xfs_inode.h"
|
|
|
|
int fs_noerr(void) { return 0; }
|
|
int fs_nosys(void) { return ENOSYS; }
|
|
void fs_noval(void) { return; }
|
|
|
|
/*
|
|
* note: all filemap functions return negative error codes. These
|
|
* need to be inverted before returning to the xfs core functions.
|
|
*/
|
|
void
|
|
xfs_tosspages(
|
|
xfs_inode_t *ip,
|
|
xfs_off_t first,
|
|
xfs_off_t last,
|
|
int fiopt)
|
|
{
|
|
struct address_space *mapping = VFS_I(ip)->i_mapping;
|
|
|
|
if (mapping->nrpages)
|
|
truncate_inode_pages(mapping, first);
|
|
}
|
|
|
|
int
|
|
xfs_flushinval_pages(
|
|
xfs_inode_t *ip,
|
|
xfs_off_t first,
|
|
xfs_off_t last,
|
|
int fiopt)
|
|
{
|
|
struct address_space *mapping = VFS_I(ip)->i_mapping;
|
|
int ret = 0;
|
|
|
|
if (mapping->nrpages) {
|
|
xfs_iflags_clear(ip, XFS_ITRUNCATED);
|
|
ret = filemap_write_and_wait(mapping);
|
|
if (!ret)
|
|
truncate_inode_pages(mapping, first);
|
|
}
|
|
return -ret;
|
|
}
|
|
|
|
int
|
|
xfs_flush_pages(
|
|
xfs_inode_t *ip,
|
|
xfs_off_t first,
|
|
xfs_off_t last,
|
|
uint64_t flags,
|
|
int fiopt)
|
|
{
|
|
struct address_space *mapping = VFS_I(ip)->i_mapping;
|
|
int ret = 0;
|
|
int ret2;
|
|
|
|
if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
|
|
xfs_iflags_clear(ip, XFS_ITRUNCATED);
|
|
ret = filemap_fdatawrite(mapping);
|
|
if (flags & XFS_B_ASYNC)
|
|
return -ret;
|
|
ret2 = filemap_fdatawait(mapping);
|
|
if (!ret)
|
|
ret = ret2;
|
|
}
|
|
return -ret;
|
|
}
|
|
|
|
int
|
|
xfs_wait_on_pages(
|
|
xfs_inode_t *ip,
|
|
xfs_off_t first,
|
|
xfs_off_t last)
|
|
{
|
|
struct address_space *mapping = VFS_I(ip)->i_mapping;
|
|
|
|
if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK))
|
|
return -filemap_fdatawait(mapping);
|
|
return 0;
|
|
}
|