diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2012-03-28 14:42:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-28 17:14:36 -0700 |
| commit | 5a04cca6c39cdd0b8c75b0628da634248f381b62 (patch) | |
| tree | 3bb72a3fb05be731f19e97b48d1744783747f43b | |
| parent | 423a5bb49ec530ec8bbfc73fd2ded83da8e58684 (diff) | |
sysctl: use bitmap library functions
Use bitmap_set() instead of using set_bit() for each bit. This conversion
is valid because the bitmap is private in the function call and atomic
bitops were unnecessary.
This also includes minor change.
- Use bitmap_copy() for shorter typing
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | kernel/sysctl.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index d48ff4fd44c..dbd70bdc176 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -23,6 +23,7 @@ #include <linux/swap.h> #include <linux/slab.h> #include <linux/sysctl.h> +#include <linux/bitmap.h> #include <linux/signal.h> #include <linux/printk.h> #include <linux/proc_fs.h> @@ -2393,9 +2394,7 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, } } - while (val_a <= val_b) - set_bit(val_a++, tmp_bitmap); - + bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1); first = 0; proc_skip_char(&kbuf, &left, '\n'); } @@ -2438,8 +2437,7 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, if (*ppos) bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len); else - memcpy(bitmap, tmp_bitmap, - BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long)); + bitmap_copy(bitmap, tmp_bitmap, bitmap_len); } kfree(tmp_bitmap); *lenp -= left; |