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kernel/sysctl.c: switch to bitmap_zalloc()

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Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.

Link: http://lkml.kernel.org/r/20190304094037.57756-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Shevchenko 2019-05-14 15:44:52 -07:00 committed by Linus Torvalds
parent 23015b22e4
commit 475dae3854
1 changed files with 2 additions and 4 deletions
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6
kernel/sysctl.c
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@ -3178,9 +3178,7 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
if (IS_ERR(kbuf))
return PTR_ERR(kbuf);
tmp_bitmap = kcalloc(BITS_TO_LONGS(bitmap_len),
sizeof(unsigned long),
GFP_KERNEL);
tmp_bitmap = bitmap_zalloc(bitmap_len, GFP_KERNEL);
if (!tmp_bitmap) {
kfree(kbuf);
return -ENOMEM;
@ -3271,7 +3269,7 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
*ppos += *lenp;
}
kfree(tmp_bitmap);
bitmap_free(tmp_bitmap);
return err;
}