X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/fe8ab488e9161c46dd9885d58fc52996dc0249ff..7e41aa883dd258f888d0470250eead40a53ef1f5:/bsd/kern/sys_pipe.c

diff --git a/bsd/kern/sys_pipe.c b/bsd/kern/sys_pipe.c
index 374d82381..1e64ce737 100644
--- a/bsd/kern/sys_pipe.c
+++ b/bsd/kern/sys_pipe.c
@@ -317,7 +317,7 @@ pipe_touch(struct pipe *tpipe, int touch)
 	}
 }
 
-static const unsigned int pipesize_blocks[] = {128,256,1024,2048,4096, 4096 * 2, PIPE_SIZE , PIPE_SIZE * 4 };
+static const unsigned int pipesize_blocks[] = {512,1024,2048,4096, 4096 * 2, PIPE_SIZE , PIPE_SIZE * 4 };
 
 /* 
  * finds the right size from possible sizes in pipesize_blocks 
@@ -329,6 +329,12 @@ choose_pipespace(unsigned long current, unsigned long expected)
 	int i = sizeof(pipesize_blocks)/sizeof(unsigned int) -1;
 	unsigned long target;
 
+	/*
+	 * assert that we always get an atomic transaction sized pipe buffer,
+	 * even if the system pipe buffer high-water mark has been crossed.
+	 */
+	assert(PIPE_BUF == pipesize_blocks[0]);
+
 	if (expected > current) 
 		target = expected;
 	else