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Message-Id: <1327072528-8479-6-git-send-email-akinobu.mita@gmail.com> Date: Sat, 21 Jan 2012 00:15:28 +0900 From: Akinobu Mita <akinobu.mita@...il.com> To: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org Cc: Akinobu Mita <akinobu.mita@...il.com> Subject: [PATCH] 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 was unnecessary. This also includes minor change. - Use bitmap_copy() for shorter typing Signed-off-by: Akinobu Mita <akinobu.mita@...il.com> --- kernel/sysctl.c | 8 +++----- 1 files changed, 3 insertions(+), 5 deletions(-) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f487f25..57c92a7 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -58,6 +58,7 @@ #include <linux/oom.h> #include <linux/kmod.h> #include <linux/capability.h> +#include <linux/bitmap.h> #include <asm/uaccess.h> #include <asm/processor.h> @@ -2884,9 +2885,7 @@ 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'); } @@ -2929,8 +2928,7 @@ 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; -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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