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Squashfs: Use vmalloc rather than kmalloc for zlib workspace 

Bugzilla bug 31422 reports occasional "page allocation failure. order:4"
at Squashfs mount time.  Fix this by making zlib workspace allocation
use vmalloc rather than kmalloc.

Reported-by: Mehmet Giritli <mehmet@giritli.eu>
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
This commit is contained in:
Phillip Lougher 2011-03-22 23:01:26 +00:00
parent 44cff8a9ee
commit 117a91e0f2
1 changed files with 3 additions and 3 deletions
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6
fs/squashfs/zlib_wrapper.c
View File

@ -26,6 +26,7 @@
#include <linux/buffer_head.h>
#include <linux/slab.h>
#include <linux/zlib.h>
#include <linux/vmalloc.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
@ -37,8 +38,7 @@ static void *zlib_init(struct squashfs_sb_info *dummy, void *buff, int len)
z_stream *stream = kmalloc(sizeof(z_stream), GFP_KERNEL);
if (stream == NULL)
goto failed;
stream->workspace = kmalloc(zlib_inflate_workspacesize(),
GFP_KERNEL);
stream->workspace = vmalloc(zlib_inflate_workspacesize());
if (stream->workspace == NULL)
goto failed;
@ -56,7 +56,7 @@ static void zlib_free(void *strm)
z_stream *stream = strm;
if (stream)
kfree(stream->workspace);
vfree(stream->workspace);
kfree(stream);
}