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[XFS] Use kernel-supplied "roundup_pow_of_two" for simplicity 

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30098a

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
Robert P. J. Day 2007-11-23 16:30:51 +11:00 committed by Lachlan McIlroy
parent e6a4b37f38
commit 40ebd81d1a
2 changed files with 4 additions and 29 deletions
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32
fs/xfs/xfs_inode.c
View File

@ -15,6 +15,8 @@
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/log2.h>
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_types.h"
@ -3642,32 +3644,6 @@ xfs_iaccess(
return XFS_ERROR(EACCES);
}
/*
* xfs_iroundup: round up argument to next power of two
*/
uint
xfs_iroundup(
uint v)
{
int i;
uint m;
if ((v & (v - 1)) == 0)
return v;
ASSERT((v & 0x80000000) == 0);
if ((v & (v + 1)) == 0)
return v + 1;
for (i = 0, m = 1; i < 31; i++, m <<= 1) {
if (v & m)
continue;
v |= m;
if ((v & (v + 1)) == 0)
return v + 1;
}
ASSERT(0);
return( 0 );
}
#ifdef XFS_ILOCK_TRACE
ktrace_t *xfs_ilock_trace_buf;
@ -4174,7 +4150,7 @@ xfs_iext_realloc_direct(
return;
}
if (!is_power_of_2(new_size)){
rnew_size = xfs_iroundup(new_size);
rnew_size = roundup_pow_of_two(new_size);
}
if (rnew_size != ifp->if_real_bytes) {
ifp->if_u1.if_extents =
@ -4197,7 +4173,7 @@ xfs_iext_realloc_direct(
else {
new_size += ifp->if_bytes;
if (!is_power_of_2(new_size)) {
rnew_size = xfs_iroundup(new_size);
rnew_size = roundup_pow_of_two(new_size);
}
xfs_iext_inline_to_direct(ifp, rnew_size);
}

1
fs/xfs/xfs_inode.h
View File

@ -526,7 +526,6 @@ int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int);
int xfs_iflush(xfs_inode_t *, uint);
void xfs_iflush_all(struct xfs_mount *);
int xfs_iaccess(xfs_inode_t *, mode_t, cred_t *);
uint xfs_iroundup(uint);
void xfs_ichgtime(xfs_inode_t *, int);
xfs_fsize_t xfs_file_last_byte(xfs_inode_t *);
void xfs_lock_inodes(xfs_inode_t **, int, int, uint);