From: Stefan Hajnoczi <stefanha@gmail.com>
To: Jeff Cody <jcody@redhat.com>
Cc: kwolf@redhat.com, jsnow@redhat.com, famz@redhat.com,
qemu-devel@nongnu.org, stefanha@redhat.com
Subject: Re: [Qemu-devel] [PATCH v2 5/6] block: mirror - change string allocation to 2-bytes
Date: Thu, 22 Jan 2015 11:41:04 +0000 [thread overview]
Message-ID: <20150122114104.GE28491@stefanha-thinkpad.redhat.com> (raw)
In-Reply-To: <943d55a006aab912af62bbb89833a48baba2d69c.1421768887.git.jcody@redhat.com>
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On Tue, Jan 20, 2015 at 12:31:32PM -0500, Jeff Cody wrote:
> The backing_filename string in mirror_run() is only used to check
> for a NULL string, so we don't need to allocate 1024 bytes (or, later,
> PATH_MAX bytes), when we only need to copy the first 2 characters.
>
> We technically only need 1 byte, as we are just checking for NULL, but
> since backing_filename[] is populated by bdrv_get_backing_filename(), a
> string size of 1 will always only return '\0';
>
> Signed-off-by: Jeff Cody <jcody@redhat.com>
> ---
> block/mirror.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
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next prev parent reply other threads:[~2015-01-22 11:41 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-20 17:31 [Qemu-devel] [PATCH v2 0/6] RESEND - Update filename string sizes in block layer Jeff Cody
2015-01-20 17:31 ` [Qemu-devel] [PATCH v2 1/6] block: vmdk - make ret variable usage clear Jeff Cody
2015-01-20 18:37 ` John Snow
2015-01-22 10:56 ` Stefan Hajnoczi
2015-01-20 17:31 ` [Qemu-devel] [PATCH v2 2/6] block: vmdk - move string allocations from stack to the heap Jeff Cody
2015-01-20 18:37 ` John Snow
2015-01-22 11:17 ` Stefan Hajnoczi
2015-01-22 11:23 ` Daniel P. Berrange
2015-01-20 17:31 ` [Qemu-devel] [PATCH v2 3/6] block: qapi - move string allocation " Jeff Cody
2015-01-20 18:37 ` John Snow
2015-01-22 11:24 ` Stefan Hajnoczi
2015-01-20 17:31 ` [Qemu-devel] [PATCH v2 4/6] block: " Jeff Cody
2015-01-20 18:37 ` John Snow
2015-01-22 11:37 ` Stefan Hajnoczi
2015-01-22 12:15 ` Jeff Cody
2015-01-20 17:31 ` [Qemu-devel] [PATCH v2 5/6] block: mirror - change string allocation to 2-bytes Jeff Cody
2015-01-20 18:37 ` John Snow
2015-01-22 11:41 ` Stefan Hajnoczi [this message]
2015-01-20 17:31 ` [Qemu-devel] [PATCH v2 6/6] block: update string sizes for filename, backing_file, exact_filename Jeff Cody
2015-01-20 18:37 ` John Snow
2015-01-22 11:46 ` Stefan Hajnoczi
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