tcmd/venti/srv: split memory allocation call - plan9port - [fork] Plan 9 from user space
HTML git clone git://src.adamsgaard.dk/plan9port
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---
DIR commit 386bd9cae471438a685234556111a01a666ca165
DIR parent 0b6b451b71bc116c8b98cdbbfbec3fbca6c8fc17
HTML Author: Neven Sajko <nsajko@gmail.com>
Date: Tue, 7 Jan 2020 17:17:39 +0000
cmd/venti/srv: split memory allocation call
This splits a certain vtmallocz call in mkihash into two vtmallocz
calls. The first issue this fixes is that the C aliasing rules were not
respected in the code before this commit. The other thing is that this
enables better memory alignment guarantees.
Updates #313
Change-Id: Ia4f3e0fc85facc778193f5e977d4f99a1a9abd23
Diffstat:
M src/cmd/venti/srv/icache.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
---
DIR diff --git a/src/cmd/venti/srv/icache.c b/src/cmd/venti/srv/icache.c
t@@ -68,8 +68,8 @@ mkihash(int size1)
size <<= 1;
}
- ih = vtmallocz(sizeof(IHash)+size*sizeof(ih->table[0]));
- ih->table = (IEntry**)(ih+1);
+ ih = vtmallocz(sizeof(IHash));
+ ih->table = vtmallocz(size * sizeof(ih->table[0]));
ih->bits = bits;
ih->size = size;
return ih;