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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-18 09:57:02 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-18 09:57:02 +0100 |
| commit | 37ba317c9ed19eb126e40bbf563f2711e191a636 (patch) | |
| tree | c5865768f341fc0ab41899fe9af9dc5918784cee /lib | |
| parent | sched: small optimisation of can_migrate_task() (diff) | |
| parent | Avoid 64-bit "switch()" statements on 32-bit architectures (diff) | |
| download | linux-37ba317c9ed19eb126e40bbf563f2711e191a636.tar.xz linux-37ba317c9ed19eb126e40bbf563f2711e191a636.zip | |
Merge branches 'sched/cleanups' and 'linus' into sched/core
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/bitmap.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c index 1338469ac849..35a1f7ff4149 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -948,15 +948,15 @@ done: */ int bitmap_find_free_region(unsigned long *bitmap, int bits, int order) { - int pos; /* scans bitmap by regions of size order */ + int pos, end; /* scans bitmap by regions of size order */ - for (pos = 0; pos < bits; pos += (1 << order)) - if (__reg_op(bitmap, pos, order, REG_OP_ISFREE)) - break; - if (pos == bits) - return -ENOMEM; - __reg_op(bitmap, pos, order, REG_OP_ALLOC); - return pos; + for (pos = 0 ; (end = pos + (1 << order)) <= bits; pos = end) { + if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE)) + continue; + __reg_op(bitmap, pos, order, REG_OP_ALLOC); + return pos; + } + return -ENOMEM; } EXPORT_SYMBOL(bitmap_find_free_region); |