The patch titled
Subject: lib: bitmap: remove redundant code from __bitmap_shift_right
has been removed from the -mm tree. Its filename was
lib-bitmap-remove-redundant-code-from-__bitmap_shift_right.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Subject: lib: bitmap: remove redundant code from __bitmap_shift_right
If the condition k==lim-1 is true, we must have off == 0 (otherwise, k
could never become that big). But in that case we have upper == 0 and
hence dst[k] == (src[k] & mask) >> rem. Since mask consists of a
consecutive range of bits starting from the LSB, anding dst[k] with mask
is a no-op.
Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/bitmap.c | 2 --
1 file changed, 2 deletions(-)
diff -puN lib/bitmap.c~lib-bitmap-remove-redundant-code-from-__bitmap_shift_right lib/bitmap.c
--- a/lib/bitmap.c~lib-bitmap-remove-redundant-code-from-__bitmap_shift_right
+++ a/lib/bitmap.c
@@ -136,8 +136,6 @@ void __bitmap_shift_right(unsigned long
lower &= mask;
lower >>= rem;
dst[k] = lower | upper;
- if (left && k == lim - 1)
- dst[k] &= mask;
}
if (off)
memset(&dst[lim - off], 0, off*sizeof(unsigned long));
_
Patches currently in -mm which might be from linux@xxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
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