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-rw-r--r--fs/xfs/xfs_linux.h314
1 files changed, 136 insertions, 178 deletions
diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
index 800f896a6cc4..4dd747bdbcca 100644
--- a/fs/xfs/xfs_linux.h
+++ b/fs/xfs/xfs_linux.h
@@ -1,56 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* 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>
+#include <linux/uuid.h>
/*
- * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits.
- * XFS_BIG_INUMS requires XFS_BIG_BLKNOS to be set.
+ * Kernel specific type declarations for XFS
*/
-#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"
+typedef __s64 xfs_off_t; /* <file offset> type */
+typedef unsigned long long xfs_ino_t; /* <inode> type */
+typedef __s64 xfs_daddr_t; /* <disk address> type */
+typedef __u32 xfs_dev_t;
+typedef __u32 xfs_nlink_t;
-#include "kmem.h"
-#include "mrlock.h"
-#include "time.h"
-#include "uuid.h"
+#include "xfs_types.h"
#include <linux/semaphore.h>
#include <linux/mm.h>
+#include <linux/sched/mm.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
+#include <linux/vmalloc.h>
#include <linux/crc32c.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/file.h>
+#include <linux/filelock.h>
#include <linux/swap.h>
#include <linux/errno.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
#include <linux/bitops.h>
#include <linux/major.h>
#include <linux/pagemap.h>
@@ -64,6 +49,7 @@
#include <linux/notifier.h>
#include <linux/delay.h>
#include <linux/log2.h>
+#include <linux/rwsem.h>
#include <linux/spinlock.h>
#include <linux/random.h>
#include <linux/ctype.h>
@@ -73,22 +59,29 @@
#include <linux/freezer.h>
#include <linux/list_sort.h>
#include <linux/ratelimit.h>
+#include <linux/rhashtable.h>
+#include <linux/xattr.h>
+#include <linux/mnt_idmapping.h>
+#include <linux/debugfs.h>
#include <asm/page.h>
#include <asm/div64.h>
#include <asm/param.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <asm/byteorder.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
-#include "xfs_vnode.h"
+#include "xfs_fs.h"
#include "xfs_stats.h"
#include "xfs_sysctl.h"
#include "xfs_iops.h"
#include "xfs_aops.h"
#include "xfs_super.h"
+#include "xfs_cksum.h"
#include "xfs_buf.h"
#include "xfs_message.h"
+#include "xfs_drain.h"
+#include "xfs_hooks.h"
#ifdef __BIG_ENDIAN
#define XFS_NATIVE_HOST 1
@@ -96,17 +89,6 @@
#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
@@ -114,33 +96,25 @@
#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 xfs_eofb_secs xfs_params.eofb_timer.val
+#define xfs_blockgc_secs xfs_params.blockgc_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_IOSHIFT PAGE_SHIFT
#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT)
/* number of BB's per block device block */
#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE)
@@ -148,179 +122,163 @@
#define ENOATTR ENODATA /* Attribute not found */
#define EWRONGFS EINVAL /* Mount with wrong filesystem type */
#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
+#define EFSBADCRC EBADMSG /* Bad CRC detected */
-#define SYNCHRONIZE() barrier()
#define __return_address __builtin_return_address(0)
-#define XFS_PROJID_DEFAULT 0
-#define MAXPATHLEN 1024
+/*
+ * Return the address of a label. Use barrier() so that the optimizer
+ * won't reorder code to refactor the error jumpouts into a single
+ * return, which throws off the reported address.
+ */
+#define __this_address ({ __label__ __here; __here: barrier(); &&__here; })
-#define MIN(a,b) (min(a,b))
-#define MAX(a,b) (max(a,b))
#define howmany(x, y) (((x)+((y)-1))/(y))
+static inline void delay(long ticks)
+{
+ schedule_timeout_uninterruptible(ticks);
+}
+
/*
- * Various platform dependent calls that don't fit anywhere else
+ * XFS wrapper structure for sysfs support. It depends on external data
+ * structures and is embedded in various internal data structures to implement
+ * the XFS sysfs object heirarchy. Define it here for broad access throughout
+ * the codebase.
*/
-#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL)
-#define xfs_stack_trace() dump_stack()
+struct xfs_kobj {
+ struct kobject kobject;
+ struct completion complete;
+};
+struct xstats {
+ struct xfsstats __percpu *xs_stats;
+ struct xfs_kobj xs_kobj;
+};
-/* Move the kernel do_div definition off to one side */
+extern struct xstats xfsstats;
-#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)
+static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
{
- __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;
+ return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
}
-/* 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)
+static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
{
- __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;
+ return sysv_encode_dev(dev);
}
-/* Side effect free 64 bit mod operation */
-static inline __u32 xfs_do_mod(void *a, __u32 b, int n)
+/*
+ * 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()
+
+static inline uint64_t rounddown_64(uint64_t x, uint32_t y)
{
- switch (n) {
- case 4:
- return *(__u32 *)a % b;
- case 8:
- {
- __u64 c = *(__u64 *)a;
- return do_div(c, b);
- }
- }
-
- /* NOTREACHED */
- return 0;
+ do_div(x, y);
+ return x * y;
}
-#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)
+static inline uint64_t roundup_64(uint64_t x, uint32_t y)
{
x += y - 1;
do_div(x, y);
- return(x * y);
+ return x * y;
}
-static inline __uint64_t howmany_64(__uint64_t x, __uint32_t 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
+static inline bool isaligned_64(uint64_t x, uint32_t y)
+{
+ return do_div(x, y) == 0;
+}
+
+/* If @b is a power of 2, return log2(b). Else return -1. */
+static inline int8_t log2_if_power2(unsigned long b)
+{
+ return is_power_of_2(b) ? ilog2(b) : -1;
+}
+
+/* If @b is a power of 2, return a mask of the lower bits, else return zero. */
+static inline unsigned long long mask64_if_power2(unsigned long b)
+{
+ return is_power_of_2(b) ? b - 1 : 0;
+}
+
+int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
+ char *data, enum req_op op);
#define ASSERT_ALWAYS(expr) \
- (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
+ (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
#ifdef DEBUG
#define ASSERT(expr) \
- (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
-
-#ifndef STATIC
-# define STATIC noinline
-#endif
+ (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
#else /* !DEBUG */
#ifdef XFS_WARN
#define ASSERT(expr) \
- (unlikely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__))
-
-#ifndef STATIC
-# define STATIC static noinline
-#endif
+ (likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__))
#else /* !DEBUG && !XFS_WARN */
-#define ASSERT(expr) ((void)0)
-
-#ifndef STATIC
-# define STATIC static noinline
-#endif
+#define ASSERT(expr) ((void)0)
#endif /* XFS_WARN */
#endif /* DEBUG */
+#define XFS_IS_CORRUPT(mp, expr) \
+ (unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \
+ NULL, 0, __FILE__, __LINE__, \
+ __this_address), \
+ true : false)
+
+#define STATIC static noinline
+
+#ifdef CONFIG_XFS_RT
+
+/*
+ * make sure we ignore the inode flag if the filesystem doesn't have a
+ * configured realtime device.
+ */
+#define XFS_IS_REALTIME_INODE(ip) \
+ (((ip)->i_diflags & XFS_DIFLAG_REALTIME) && \
+ (ip)->i_mount->m_rtdev_targp)
+#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
+#else
+#define XFS_IS_REALTIME_INODE(ip) (0)
+#define XFS_IS_REALTIME_MOUNT(mp) (0)
+#endif
+
+/*
+ * Starting in Linux 4.15, the %p (raw pointer value) printk modifier
+ * prints a hashed version of the pointer to avoid leaking kernel
+ * pointers into dmesg. If we're trying to debug the kernel we want the
+ * raw values, so override this behavior as best we can.
+ */
+#ifdef DEBUG
+# define PTR_FMT "%px"
+#else
+# define PTR_FMT "%p"
+#endif
+
+/*
+ * Helper for IO routines to grab backing pages from allocated kernel memory.
+ */
+static inline struct page *
+kmem_to_page(void *addr)
+{
+ if (is_vmalloc_addr(addr))
+ return vmalloc_to_page(addr);
+ return virt_to_page(addr);
+}
+
#endif /* __XFS_LINUX__ */
generated by cgit (git 2.34.1) at 2025-12-21 21:42:06 +0000