add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/gfs2/bmap.h
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@@ -1,10 +1,7 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
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  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
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- *
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- * This copyrighted material is made available to anyone wishing to use,
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- * modify, copy, or redistribute it subject to the terms and conditions
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- * of the GNU General Public License version 2.
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  */
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 #ifndef __BMAP_DOT_H__
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@@ -47,6 +44,7 @@
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 }
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 extern const struct iomap_ops gfs2_iomap_ops;
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+extern const struct iomap_writeback_ops gfs2_writeback_ops;
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 extern int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page);
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 extern int gfs2_block_map(struct inode *inode, sector_t lblock,
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@@ -64,5 +62,6 @@
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 extern int gfs2_map_journal_extents(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd);
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 extern void gfs2_free_journal_extents(struct gfs2_jdesc *jd);
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 extern int __gfs2_punch_hole(struct file *file, loff_t offset, loff_t length);
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+extern int gfs2_lblk_to_dblk(struct inode *inode, u32 lblock, u64 *dblock);
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 #endif /* __BMAP_DOT_H__ */