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From ff40b201543aff558f2bf681da3093bce82c6eba Mon Sep 17 00:00:00 2001
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From: Juan Quintela <quintela@redhat.com>
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Date: Tue, 14 Jan 2014 15:07:28 +0100
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Subject: [PATCH 17/40] bitmap: Add bitmap_zero_extend operation
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RH-Author: Juan Quintela <quintela@redhat.com>
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Message-id: <1389712071-23303-18-git-send-email-quintela@redhat.com>
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Patchwork-id: 56671
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O-Subject: [RHEL7 qemu-kvm PATCH 17/40] bitmap: Add bitmap_zero_extend operation
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Bugzilla: 997559
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Orit Wasserman <owasserm@redhat.com>
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RH-Acked-by: Dr. David Alan Gilbert (git) <dgilbert@redhat.com>
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Signed-off-by: Juan Quintela <quintela@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Reviewed-by: Orit Wasserman <owasserm@redhat.com>
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(cherry picked from commit 164590a60fd685399da259ac41b338d9a0b9d6c0)
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Signed-off-by: Juan Quintela <quintela@trasno.org>
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---
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include/qemu/bitmap.h | 9 +++++++++
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1 file changed, 9 insertions(+)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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include/qemu/bitmap.h | 9 +++++++++
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1 files changed, 9 insertions(+), 0 deletions(-)
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diff --git a/include/qemu/bitmap.h b/include/qemu/bitmap.h
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index afdd257..1babd5d 100644
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--- a/include/qemu/bitmap.h
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+++ b/include/qemu/bitmap.h
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@@ -220,4 +220,13 @@ unsigned long bitmap_find_next_zero_area(unsigned long *map,
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unsigned long nr,
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unsigned long align_mask);
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+static inline unsigned long *bitmap_zero_extend(unsigned long *old,
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+ long old_nbits, long new_nbits)
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+{
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+ long new_len = BITS_TO_LONGS(new_nbits) * sizeof(unsigned long);
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+ unsigned long *new = g_realloc(old, new_len);
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+ bitmap_clear(new, old_nbits, new_nbits - old_nbits);
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+ return new;
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+}
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+
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#endif /* BITMAP_H */
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--
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1.7.1
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