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Breakout BTRFS_SETGET_FUNCS into a separate C file, the inlines were too big.

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2007-10-15 16:18:56 -04:00
parent 810191ff30
commit 0f82731fc5
6 changed files with 104 additions and 74 deletions
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97
fs/btrfs/struct-funcs.c Normal file
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@ -0,0 +1,97 @@
/*
* Copyright (C) 2007 Oracle. 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 v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will 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 to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <linux/highmem.h>
#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
u##bits btrfs_##name(struct extent_buffer *eb, \
type *s) \
{ \
unsigned long offset = (unsigned long)s + \
offsetof(type, member); \
__le##bits *tmp; \
/* ugly, but we want the fast path here */ \
if (eb->map_token && offset >= eb->map_start && \
offset + sizeof(((type *)0)->member) <= eb->map_start + \
eb->map_len) { \
tmp = (__le##bits *)(eb->kaddr + offset - \
eb->map_start); \
return le##bits##_to_cpu(*tmp); \
} \
{ \
int err; \
char *map_token; \
char *kaddr; \
int unmap_on_exit = (eb->map_token == NULL); \
unsigned long map_start; \
unsigned long map_len; \
__le##bits res; \
err = map_extent_buffer(eb, offset, \
sizeof(((type *)0)->member), \
&map_token, &kaddr, \
&map_start, &map_len, KM_USER1); \
if (err) { \
read_eb_member(eb, s, type, member, &res); \
return le##bits##_to_cpu(res); \
} \
tmp = (__le##bits *)(kaddr + offset - map_start); \
res = le##bits##_to_cpu(*tmp); \
if (unmap_on_exit) \
unmap_extent_buffer(eb, map_token, KM_USER1); \
return res; \
} \
} \
void btrfs_set_##name(struct extent_buffer *eb, \
type *s, u##bits val) \
{ \
unsigned long offset = (unsigned long)s + \
offsetof(type, member); \
__le##bits *tmp; \
/* ugly, but we want the fast path here */ \
if (eb->map_token && offset >= eb->map_start && \
offset + sizeof(((type *)0)->member) <= eb->map_start + \
eb->map_len) { \
tmp = (__le##bits *)(eb->kaddr + offset - \
eb->map_start); \
*tmp = cpu_to_le##bits(val); \
return; \
} \
{ \
int err; \
char *map_token; \
char *kaddr; \
int unmap_on_exit = (eb->map_token == NULL); \
unsigned long map_start; \
unsigned long map_len; \
err = map_extent_buffer(eb, offset, \
sizeof(((type *)0)->member), \
&map_token, &kaddr, \
&map_start, &map_len, KM_USER1); \
if (err) { \
val = cpu_to_le##bits(val); \
write_eb_member(eb, s, type, member, &val); \
return; \
} \
tmp = (__le##bits *)(kaddr + offset - map_start); \
*tmp = cpu_to_le##bits(val); \
if (unmap_on_exit) \
unmap_extent_buffer(eb, map_token, KM_USER1); \
} \
}
#include "ctree.h"