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