patch-2.4.27 linux-2.4.27/fs/xfs/linux/xfs_linux.h

• Lines: 381
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.26/fs/xfs/linux/xfs_linux.h
• Orig date: 2004-04-14 06:05:40.000000000 -0700

diff -urN linux-2.4.26/fs/xfs/linux/xfs_linux.h linux-2.4.27/fs/xfs/linux/xfs_linux.h
@@ -1,380 +0,0 @@
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like.  Any license provided herein, whether implied or
- * otherwise, applies only to this software file.  Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_LINUX__
-#define __XFS_LINUX__
-
-#include <linux/types.h>
-#include <linux/config.h>
-
-/*
- * Some types are conditional depending on the target system.
- * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits.
- * XFS_BIG_INUMS needs the VFS inode number to be 64 bits, as well
- * as requiring XFS_BIG_BLKNOS to be set.
- */
-#define XFS_BIG_BLKNOS	0
-#define XFS_BIG_INUMS	0
-
-#include <xfs_types.h>
-#include <xfs_arch.h>
-
-#include <kmem.h>
-#include <mrlock.h>
-#include <spin.h>
-#include <sv.h>
-#include <mutex.h>
-#include <sema.h>
-#include <time.h>
-
-#include <support/qsort.h>
-#include <support/ktrace.h>
-#include <support/debug.h>
-#include <support/move.h>
-#include <support/uuid.h>
-
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/file.h>
-#include <linux/swap.h>
-#include <linux/errno.h>
-#include <linux/locks.h>
-#include <linux/sched.h>
-#include <linux/bitops.h>
-#include <linux/major.h>
-#include <linux/pagemap.h>
-#include <linux/seq_file.h>
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-
-#include <asm/page.h>
-#include <asm/div64.h>
-#include <asm/param.h>
-#include <asm/uaccess.h>
-#include <asm/byteorder.h>
-#include <asm/unaligned.h>
-
-#include <xfs_behavior.h>
-#include <xfs_vfs.h>
-#include <xfs_cred.h>
-#include <xfs_vnode.h>
-#include <xfs_stats.h>
-#include <xfs_sysctl.h>
-#include <xfs_iops.h>
-#include <xfs_super.h>
-#include <xfs_globals.h>
-#include <xfs_fs_subr.h>
-#include <xfs_lrw.h>
-#include <xfs_buf.h>
-
-/*
- * Feature macros (disable/enable)
- */
-#define HAVE_REFCACHE	/* 2.4 uses a NFS reference cache; 2.6+ does not */
-#undef  HAVE_SENDFILE	/* sendfile(2) is a 2.6+ system call, not in 2.4 */
-
-#ifndef EVMS_MAJOR
-#define EVMS_MAJOR 117
-#endif
-
-/*
- * State flag for unwritten extent buffers.
- *
- * We need to be able to distinguish between these and delayed
- * allocate buffers within XFS.  The generic IO path code does
- * not need to distinguish - we use the BH_Delay flag for both
- * delalloc and these ondisk-uninitialised buffers.
- */
-#define BH_Unwritten		BH_PrivateStart
-#define buffer_unwritten(bh)	__buffer_state(bh, Unwritten)
-static inline void set_buffer_unwritten_io(struct buffer_head *bh)
-{
-	bh->b_end_io = linvfs_unwritten_done;
-}
-BUFFER_FNS(Unwritten, unwritten)
-
-#define xfs_refcache_size	xfs_params.refcache_size.val
-#define xfs_refcache_purge_count xfs_params.refcache_purge.val
-#define restricted_chown	xfs_params.restrict_chown.val
-#define irix_sgid_inherit	xfs_params.sgid_inherit.val
-#define irix_symlink_mode	xfs_params.symlink_mode.val
-#define xfs_panic_mask		xfs_params.panic_mask.val
-#define xfs_error_level		xfs_params.error_level.val
-#define xfs_syncd_interval	xfs_params.sync_interval.val
-#define xfs_stats_clear		xfs_params.stats_clear.val
-#define xfs_inherit_sync	xfs_params.inherit_sync.val
-#define xfs_inherit_nodump	xfs_params.inherit_nodump.val
-#define xfs_inherit_noatime	xfs_params.inherit_noatim.val
-#define xfs_flush_interval	xfs_params.flush_interval.val
-#define xfs_age_buffer		xfs_params.age_buffer.val
-
-#define current_cpu()		smp_processor_id()
-#define current_pid()		(current->pid)
-#define current_fsuid(cred)	(current->fsuid)
-#define current_fsgid(cred)	(current->fsgid)
-
-#define NBPP		PAGE_SIZE
-#define DPPSHFT		(PAGE_SHIFT - 9)
-#define NDPP		(1 << (PAGE_SHIFT - 9))
-#define dtop(DD)	(((DD) + NDPP - 1) >> DPPSHFT)
-#define dtopt(DD)	((DD) >> DPPSHFT)
-#define dpoff(DD)	((DD) & (NDPP-1))
-
-#define NBBY		8		/* number of bits per byte */
-#define	NBPC		PAGE_SIZE	/* Number of bytes per click */
-#define	BPCSHIFT	PAGE_SHIFT	/* LOG2(NBPC) if exact */
-
-/*
- * Size of block device i/o is parameterized here.
- * Currently the system supports page-sized i/o.
- */
-#define	BLKDEV_IOSHIFT		BPCSHIFT
-#define	BLKDEV_IOSIZE		(1<<BLKDEV_IOSHIFT)
-/* number of BB's per block device block */
-#define	BLKDEV_BB		BTOBB(BLKDEV_IOSIZE)
-
-/* bytes to clicks */
-#define	btoc(x)		(((__psunsigned_t)(x)+(NBPC-1))>>BPCSHIFT)
-#define	btoct(x)	((__psunsigned_t)(x)>>BPCSHIFT)
-#define	btoc64(x)	(((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT)
-#define	btoct64(x)	((__uint64_t)(x)>>BPCSHIFT)
-#define	io_btoc(x)	(((__psunsigned_t)(x)+(IO_NBPC-1))>>IO_BPCSHIFT)
-#define	io_btoct(x)	((__psunsigned_t)(x)>>IO_BPCSHIFT)
-
-/* off_t bytes to clicks */
-#define offtoc(x)       (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT)
-#define offtoct(x)      ((xfs_off_t)(x)>>BPCSHIFT)
-
-/* clicks to off_t bytes */
-#define	ctooff(x)	((xfs_off_t)(x)<<BPCSHIFT)
-
-/* clicks to bytes */
-#define	ctob(x)		((__psunsigned_t)(x)<<BPCSHIFT)
-#define btoct(x)        ((__psunsigned_t)(x)>>BPCSHIFT)
-#define	ctob64(x)	((__uint64_t)(x)<<BPCSHIFT)
-#define	io_ctob(x)	((__psunsigned_t)(x)<<IO_BPCSHIFT)
-
-/* bytes to clicks */
-#define btoc(x)         (((__psunsigned_t)(x)+(NBPC-1))>>BPCSHIFT)
-
-#ifndef CELL_CAPABLE
-#define FSC_NOTIFY_NAME_CHANGED(vp)
-#endif
-
-#ifndef ENOATTR
-#define ENOATTR		ENODATA		/* Attribute not found */
-#endif
-
-/* Note: EWRONGFS never visible outside the kernel */
-#define	EWRONGFS	EINVAL		/* Mount with wrong filesystem type */
-
-/*
- * XXX EFSCORRUPTED needs a real value in errno.h. asm-i386/errno.h won't
- *     return codes out of its known range in errno.
- * XXX Also note: needs to be < 1000 and fairly unique on Linux (mustn't
- *     conflict with any code we use already or any code a driver may use)
- * XXX Some options (currently we do #2):
- *	1/ New error code ["Filesystem is corrupted", _after_ glibc updated]
- *	2/ 990 ["Unknown error 990"]
- *	3/ EUCLEAN ["Structure needs cleaning"]
- *	4/ Convert EFSCORRUPTED to EIO [just prior to return into userspace]
- */
-#define EFSCORRUPTED    990		/* Filesystem is corrupted */
-
-#define SYNCHRONIZE()	barrier()
-#define __return_address __builtin_return_address(0)
-
-/*
- * IRIX (BSD) quotactl makes use of separate commands for user/group,
- * whereas on Linux the syscall encodes this information into the cmd
- * field (see the QCMD macro in quota.h).  These macros help keep the
- * code portable - they are not visible from the syscall interface.
- */
-#define Q_XSETGQLIM	XQM_CMD(0x8)	/* set groups disk limits */
-#define Q_XGETGQUOTA	XQM_CMD(0x9)	/* get groups disk limits */
-
-/* IRIX uses a dynamic sizing algorithm (ndquot = 200 + numprocs*2) */
-/* we may well need to fine-tune this if it ever becomes an issue.  */
-#define DQUOT_MAX_HEURISTIC	1024	/* NR_DQUOTS */
-#define ndquot			DQUOT_MAX_HEURISTIC
-
-/* IRIX uses the current size of the name cache to guess a good value */
-/* - this isn't the same but is a good enough starting point for now. */
-#define DQUOT_HASH_HEURISTIC	files_stat.nr_files
-
-/* IRIX inodes maintain the project ID also, zero this field on Linux */
-#define DEFAULT_PROJID	0
-#define dfltprid	DEFAULT_PROJID
-
-#define MAXPATHLEN	1024
-
-#define MIN(a,b)	(min(a,b))
-#define MAX(a,b)	(max(a,b))
-#define howmany(x, y)	(((x)+((y)-1))/(y))
-#define roundup(x, y)	((((x)+((y)-1))/(y))*(y))
-
-/*
- * Juggle IRIX device numbers - still used in ondisk structures
- */
-#define XFS_DEV_BITSMAJOR	14
-#define XFS_DEV_BITSMINOR	18
-#define XFS_DEV_MAXMAJ		0x1ff
-#define XFS_DEV_MAXMIN		0x3ffff
-#define XFS_DEV_MAJOR(dev)	((int)(((unsigned)(dev)>>XFS_DEV_BITSMINOR) \
-				    & XFS_DEV_MAXMAJ))
-#define XFS_DEV_MINOR(dev)	((int)((dev)&XFS_DEV_MAXMIN))
-#define XFS_MKDEV(major,minor) ((xfs_dev_t)(((major)<<XFS_DEV_BITSMINOR) \
-				    | (minor&XFS_DEV_MAXMIN)))
-
-#define XFS_DEV_TO_KDEVT(dev)	mk_kdev(XFS_DEV_MAJOR(dev),XFS_DEV_MINOR(dev))
-
-
-/* Produce a kernel stack trace */
-
-static inline void xfs_stack_trace(void)
-{
-	dump_stack();
-}
-
-
-/* Move the kernel do_div definition off to one side */
-
-#if defined __i386__
-/* For ia32 we need to pull some tricks to get past various versions
- * of the compiler which do not like us using do_div in the middle
- * of large functions.
- */
-static inline __u32 xfs_do_div(void *a, __u32 b, int n)
-{
-	__u32	mod;
-
-	switch (n) {
-		case 4:
-			mod = *(__u32 *)a % b;
-			*(__u32 *)a = *(__u32 *)a / b;
-			return mod;
-		case 8:
-			{
-			unsigned long __upper, __low, __high, __mod;
-			__u64	c = *(__u64 *)a;
-			__upper = __high = c >> 32;
-			__low = c;
-			if (__high) {
-				__upper = __high % (b);
-				__high = __high / (b);
-			}
-			asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper));
-			asm("":"=A" (c):"a" (__low),"d" (__high));
-			*(__u64 *)a = c;
-			return __mod;
-			}
-	}
-
-	/* NOTREACHED */
-	return 0;
-}
-
-/* Side effect free 64 bit mod operation */
-static inline __u32 xfs_do_mod(void *a, __u32 b, int n)
-{
-	switch (n) {
-		case 4:
-			return *(__u32 *)a % b;
-		case 8:
-			{
-			unsigned long __upper, __low, __high, __mod;
-			__u64	c = *(__u64 *)a;
-			__upper = __high = c >> 32;
-			__low = c;
-			if (__high) {
-				__upper = __high % (b);
-				__high = __high / (b);
-			}
-			asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper));
-			asm("":"=A" (c):"a" (__low),"d" (__high));
-			return __mod;
-			}
-	}
-
-	/* NOTREACHED */
-	return 0;
-}
-#else
-static inline __u32 xfs_do_div(void *a, __u32 b, int n)
-{
-	__u32	mod;
-
-	switch (n) {
-		case 4:
-			mod = *(__u32 *)a % b;
-			*(__u32 *)a = *(__u32 *)a / b;
-			return mod;
-		case 8:
-			mod = do_div(*(__u64 *)a, b);
-			return mod;
-	}
-
-	/* NOTREACHED */
-	return 0;
-}
-
-/* Side effect free 64 bit mod operation */
-static inline __u32 xfs_do_mod(void *a, __u32 b, int n)
-{
-	switch (n) {
-		case 4:
-			return *(__u32 *)a % b;
-		case 8:
-			{
-			__u64	c = *(__u64 *)a;
-			return do_div(c, b);
-			}
-	}
-
-	/* NOTREACHED */
-	return 0;
-}
-#endif
-
-#undef do_div
-#define do_div(a, b)	xfs_do_div(&(a), (b), sizeof(a))
-#define do_mod(a, b)	xfs_do_mod(&(a), (b), sizeof(a))
-
-static inline __uint64_t roundup_64(__uint64_t x, __uint32_t y)
-{
-	x += y - 1;
-	do_div(x, y);
-	return(x * y);
-}
-
-#endif /* __XFS_LINUX__ */