288699feca
Dmapi support was never merged upstream, but we still have a lot of hooks bloating XFS for it, all over the fast pathes of the filesystem. This patch drops over 700 lines of dmapi overhead. If we'll ever get HSM support in mainline at least the namespace events can be done much saner in the VFS instead of the individual filesystem, so it's not like this is much help for future work. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
/*
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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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#include "xfs_trace.h"
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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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trace_xfs_pagecache_inval(ip, first, last);
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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 & XBF_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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