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