fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / fs / xfs / linux-2.6 / xfs_linux.h

diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h
index b554e6f..ca367c2 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/linux-2.6/xfs_linux.h
@@ -19,7 +19,6 @@
 #define __XFS_LINUX__
 
 #include <linux/types.h>
-#include <linux/config.h>
 
 /*
  * Some types are conditional depending on the target system.
@@ -73,6 +72,9 @@
 #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 <asm/page.h>
 #include <asm/div64.h>
@@ -100,6 +102,12 @@
  */
 #undef  HAVE_REFCACHE  /* reference cache not needed for NFS in 2.6 */
 #define HAVE_SENDFILE  /* sendfile(2) exists in 2.6, but not in 2.4 */
+#define HAVE_SPLICE    /* a splice(2) exists in 2.6, but not in 2.4 */
+#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
 
 /*
  * State flag for unwritten extent buffers.
@@ -125,22 +133,23 @@ BUFFER_FNS(PrivateStart, unwritten);
 #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
 
-#ifndef raw_smp_processor_id
-#define raw_smp_processor_id() smp_processor_id()
-#endif
-#define current_cpu()          raw_smp_processor_id()
+#define current_cpu()          (raw_smp_processor_id())
 #define current_pid()          (current->pid)
 #define current_fsuid(cred)    (current->fsuid)
 #define current_fsgid(cred)    (current->fsgid)
-#define current_fsxid(cred,vp) (vx_current_fsxid(LINVFS_GET_IP(vp)->i_sb))
+#define current_fstag(cred,vp) (dx_current_fstag(vn_to_inode(vp)->i_sb))
+#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 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 */
@@ -160,8 +169,6 @@ BUFFER_FNS(PrivateStart, unwritten);
 #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)
@@ -174,30 +181,13 @@ BUFFER_FNS(PrivateStart, unwritten);
 #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 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 EWRONGFS       EINVAL          /* Mount with wrong filesystem type */
+#define EFSCORRUPTED   EUCLEAN         /* Filesystem is corrupted */
 
 #define SYNCHRONIZE()  barrier()
 #define __return_address __builtin_return_address(0)
@@ -219,7 +209,6 @@ BUFFER_FNS(PrivateStart, unwritten);
 #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))
 
 /*
  * Various platform dependent calls that don't fit anywhere else
@@ -227,7 +216,7 @@ BUFFER_FNS(PrivateStart, unwritten);
 #define xfs_sort(a,n,s,fn)     sort(a,n,s,fn,NULL)
 #define xfs_stack_trace()      dump_stack()
 #define xfs_itruncate_data(ip, off)    \
-       (-vmtruncate(LINVFS_GET_IP(XFS_ITOV(ip)), (off)))
+       (-vmtruncate(vn_to_inode(XFS_ITOV(ip)), (off)))
 #define xfs_statvfs_fsid(statp, mp)    \
        ({ u64 id = huge_encode_dev((mp)->m_ddev_targp->bt_dev); \
           __kernel_fsid_t *fsid = &(statp)->f_fsid;    \
@@ -344,4 +333,11 @@ static inline __uint64_t roundup_64(__uint64_t x, __uint32_t 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;
+}
+
 #endif /* __XFS_LINUX__ */