53013cba41
We need to take a data lock around extends to protect the pages that ocfs2_zero_extend is going to be pulling into the page cache. Otherwise an extend on one node might populate the page cache with data pages that have no lock coverage. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* Copyright (C) 2002, 2004, 2005 Oracle. 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
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will 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 GNU
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* 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
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef OCFS2_AOPS_H
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#define OCFS2_AOPS_H
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int ocfs2_prepare_write_nolock(struct inode *inode, struct page *page,
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unsigned from, unsigned to);
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struct ocfs2_journal_handle *ocfs2_start_walk_page_trans(struct inode *inode,
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struct page *page,
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unsigned from,
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unsigned to);
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/* all ocfs2_dio_end_io()'s fault */
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#define ocfs2_iocb_is_rw_locked(iocb) \
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test_bit(0, (unsigned long *)&iocb->private)
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#define ocfs2_iocb_set_rw_locked(iocb) \
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set_bit(0, (unsigned long *)&iocb->private)
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#define ocfs2_iocb_clear_rw_locked(iocb) \
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clear_bit(0, (unsigned long *)&iocb->private)
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#endif /* OCFS2_FILE_H */
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