Author: jhb
Date: Fri Mar 4 22:26:41 2011
New Revision: 219276
URL: http://svn.freebsd.org/changeset/base/219276
Log:
Use ffs() to locate free bits in the inode bitmap rather than a loop with
bit shifts.
Reviewed by: mckusick
MFC after: 1 month
Modified:
head/sys/ufs/ffs/ffs_alloc.c
Modified: head/sys/ufs/ffs/ffs_alloc.c
==============================================================================
--- head/sys/ufs/ffs/ffs_alloc.c Fri Mar 4 20:37:38 2011
(r219275)
+++ head/sys/ufs/ffs/ffs_alloc.c Fri Mar 4 22:26:41 2011
(r219276)
@@ -1782,17 +1782,13 @@ ffs_nodealloccg(ip, cg, ipref, mode, unu
}
}
i = start + len - loc;
- map = inosused[i];
- ipref = i * NBBY;
- for (i = 1; i < (1 << NBBY); i <<= 1, ipref++) {
- if ((map & i) == 0) {
- cgp->cg_irotor = ipref;
- goto gotit;
- }
+ map = inosused[i] ^ 0xff;
+ if (map == 0) {
+ printf("fs = %s\n", fs->fs_fsmnt);
+ panic("ffs_nodealloccg: block not in map");
}
- printf("fs = %s\n", fs->fs_fsmnt);
- panic("ffs_nodealloccg: block not in map");
- /* NOTREACHED */
+ ipref = i * NBBY + ffs(map) - 1;
+ cgp->cg_irotor = ipref;
gotit:
/*
* Check to see if we need to initialize more inodes.
_______________________________________________
svn-src-head@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
