/* * 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__ */