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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2009-12-16 00:48:30 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-16 15:20:19 (GMT) |
| commit | e756fd8080622998007b592bd33f86cecf56587a (patch) | |
| tree | a39e0bea4984e28fedefb196ebaf1a95e89778fc /arch/sparc/mm | |
| parent | 43ff8b60853793fb0155b3e465739d2170c3aa2f (diff) | |
| download | linux-e756fd8080622998007b592bd33f86cecf56587a.tar.xz | |
sparc: use bitmap_find_next_zero_area
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc/mm')
| -rw-r--r-- | arch/sparc/mm/sun4c.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c index 2ffacd6..a89baf0 100644 --- a/arch/sparc/mm/sun4c.c +++ b/arch/sparc/mm/sun4c.c @@ -17,6 +17,7 @@ #include <linux/fs.h> #include <linux/seq_file.h> #include <linux/scatterlist.h> +#include <linux/bitmap.h> #include <asm/sections.h> #include <asm/page.h> @@ -1021,20 +1022,12 @@ static char *sun4c_lockarea(char *vaddr, unsigned long size) npages = (((unsigned long)vaddr & ~PAGE_MASK) + size + (PAGE_SIZE-1)) >> PAGE_SHIFT; - scan = 0; local_irq_save(flags); - for (;;) { - scan = find_next_zero_bit(sun4c_iobuffer_map, - iobuffer_map_size, scan); - if ((base = scan) + npages > iobuffer_map_size) goto abend; - for (;;) { - if (scan >= base + npages) goto found; - if (test_bit(scan, sun4c_iobuffer_map)) break; - scan++; - } - } + base = bitmap_find_next_zero_area(sun4c_iobuffer_map, iobuffer_map_size, + 0, npages, 0); + if (base >= iobuffer_map_size) + goto abend; -found: high = ((base + npages) << PAGE_SHIFT) + sun4c_iobuffer_start; high = SUN4C_REAL_PGDIR_ALIGN(high); while (high > sun4c_iobuffer_high) { |