The patch titled
Subject: kernel/sysctl.c: switch to bitmap_zalloc()
has been added to the -mm tree. Its filename is
kernel-sysctlc-switch-to-bitmap_zalloc.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernel-sysctlc-switch-to-bitmap_zalloc.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernel-sysctlc-switch-to-bitmap_zalloc.patch
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------------------------------------------------------
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Subject: kernel/sysctl.c: switch to bitmap_zalloc()
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@xxxxxxxxxxxxxxx
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sysctl.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/kernel/sysctl.c~kernel-sysctlc-switch-to-bitmap_zalloc
+++ a/kernel/sysctl.c
@@ -3177,9 +3177,7 @@ int proc_do_large_bitmap(struct ctl_tabl
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;
@@ -3270,7 +3268,7 @@ int proc_do_large_bitmap(struct ctl_tabl
*ppos += *lenp;
}
- kfree(tmp_bitmap);
+ bitmap_free(tmp_bitmap);
return err;
}
_
Patches currently in -mm which might be from andriy.shevchenko@xxxxxxxxxxxxxxx are
kernel-sysctlc-switch-to-bitmap_zalloc.patch
