From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Wed, 31 Jan 2018 16:37:32 +0000 (+0100)
Subject: gzip: flush output buffer after stored blocks only if necessary
X-Git-Tag: 1_29_0~311
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=919bc9d43c47a206e632c1b4c80c5f23e307b176;p=oweals%2Fbusybox.git

gzip: flush output buffer after stored blocks only if necessary

function                                             old     new   delta
flush_block                                          671     680      +9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---

diff --git a/archival/gzip.c b/archival/gzip.c
index 7df38c2bc..92130e7fb 100644
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -634,7 +634,8 @@ static void copy_block(char *buf, unsigned len, int header)
 		put_8bit(*buf++);
 	}
 	/* The above can 32-bit misalign outbuf */
-	flush_outbuf_if_32bit_optimized();
+	if (G1.outcnt & 3) /* syscalls are expensive, is it really misaligned? */
+		flush_outbuf_if_32bit_optimized();
 }