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Diffstat (limited to 'fs/xfs/xfs_linux.h')
| -rw-r--r-- | fs/xfs/xfs_linux.h | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h new file mode 100644 index 00000000000..828662f70d6 --- /dev/null +++ b/fs/xfs/xfs_linux.h @@ -0,0 +1,311 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * 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 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. 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 the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_LINUX__ +#define __XFS_LINUX__ + +#include <linux/types.h> + +/* + * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits. + * XFS_BIG_INUMS requires XFS_BIG_BLKNOS to be set. + */ +#if defined(CONFIG_LBDAF) || (BITS_PER_LONG == 64) +# define XFS_BIG_BLKNOS 1 +# define XFS_BIG_INUMS 1 +#else +# define XFS_BIG_BLKNOS 0 +# define XFS_BIG_INUMS 0 +#endif + +#include "xfs_types.h" + +#include "kmem.h" +#include "mrlock.h" +#include "time.h" +#include "uuid.h" + +#include <linux/semaphore.h> +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/blkdev.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/file.h> +#include <linux/swap.h> +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/bitops.h> +#include <linux/major.h> +#include <linux/pagemap.h> +#include <linux/vfs.h> +#include <linux/seq_file.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/proc_fs.h> +#include <linux/sort.h> +#include <linux/cpu.h> +#include <linux/notifier.h> +#include <linux/delay.h> +#include <linux/log2.h> +#include <linux/spinlock.h> +#include <linux/random.h> +#include <linux/ctype.h> +#include <linux/writeback.h> +#include <linux/capability.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/list_sort.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_vnode.h" +#include "xfs_stats.h" +#include "xfs_sysctl.h" +#include "xfs_iops.h" +#include "xfs_aops.h" +#include "xfs_super.h" +#include "xfs_buf.h" +#include "xfs_message.h" + +#ifdef __BIG_ENDIAN +#define XFS_NATIVE_HOST 1 +#else +#undef XFS_NATIVE_HOST +#endif + +/* + * Feature macros (disable/enable) + */ +#ifdef CONFIG_SMP +#define HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ +#else +#undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ +#endif + +#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_centisecs xfs_params.syncd_timer.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_buf_timer_centisecs xfs_params.xfs_buf_timer.val +#define xfs_buf_age_centisecs xfs_params.xfs_buf_age.val +#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val +#define xfs_rotorstep xfs_params.rotorstep.val +#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val +#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val + +#define current_cpu() (raw_smp_processor_id()) +#define current_pid() (current->pid) +#define current_test_flags(f) (current->flags & (f)) +#define current_set_flags_nested(sp, f) \ + (*(sp) = current->flags, current->flags |= (f)) +#define current_clear_flags_nested(sp, f) \ + (*(sp) = current->flags, current->flags &= ~(f)) +#define current_restore_flags_nested(sp, f) \ + (current->flags = ((current->flags & ~(f)) | (*(sp) & (f)))) + +#define spinlock_destroy(lock) + +#define NBBY 8 /* number of bits per byte */ + +/* + * Size of block device i/o is parameterized here. + * Currently the system supports page-sized i/o. + */ +#define BLKDEV_IOSHIFT PAGE_CACHE_SHIFT +#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT) +/* number of BB's per block device block */ +#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE) + +#define ENOATTR ENODATA /* Attribute not found */ +#define EWRONGFS EINVAL /* Mount with wrong filesystem type */ +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ + +#define SYNCHRONIZE() barrier() +#define __return_address __builtin_return_address(0) + +#define XFS_PROJID_DEFAULT 0 +#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)) + +/* + * Various platform dependent calls that don't fit anywhere else + */ +#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) +#define xfs_stack_trace() 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); +} + +static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y) +{ + x += y - 1; + do_div(x, y); + return x; +} + +/* ARM old ABI has some weird alignment/padding */ +#if defined(__arm__) && !defined(__ARM_EABI__) +#define __arch_pack __attribute__((packed)) +#else +#define __arch_pack +#endif + +#define ASSERT_ALWAYS(expr) \ + (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) + +#ifndef DEBUG +#define ASSERT(expr) ((void)0) + +#ifndef STATIC +# define STATIC static noinline +#endif + +#else /* DEBUG */ + +#define ASSERT(expr) \ + (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) + +#ifndef STATIC +# define STATIC noinline +#endif + +#endif /* DEBUG */ + +#endif /* __XFS_LINUX__ */ |