crypto: sha512 - reduce stack usage to safe number

[linux-flexiantxendom0-3.2.10.git] / crypto / deflate.c

diff --git a/crypto/deflate.c b/crypto/deflate.c
index 463dc85..b0165ec 100644 (file)
--- a/crypto/deflate.c
+++ b/crypto/deflate.c
@@ -32,7 +32,6 @@
 #include <linux/interrupt.h>
 #include <linux/mm.h>
 #include <linux/net.h>
-#include <linux/slab.h>
 
 #define DEFLATE_DEF_LEVEL              Z_DEFAULT_COMPRESSION
 #define DEFLATE_DEF_WINBITS            11
@@ -48,12 +47,12 @@ static int deflate_comp_init(struct deflate_ctx *ctx)
        int ret = 0;
        struct z_stream_s *stream = &ctx->comp_stream;
 
-       stream->workspace = vmalloc(zlib_deflate_workspacesize());
+       stream->workspace = vzalloc(zlib_deflate_workspacesize(
+                               -DEFLATE_DEF_WINBITS, DEFLATE_DEF_MEMLEVEL));
        if (!stream->workspace) {
                ret = -ENOMEM;
                goto out;
        }
-       memset(stream->workspace, 0, zlib_deflate_workspacesize());
        ret = zlib_deflateInit2(stream, DEFLATE_DEF_LEVEL, Z_DEFLATED,
                                -DEFLATE_DEF_WINBITS, DEFLATE_DEF_MEMLEVEL,
                                Z_DEFAULT_STRATEGY);
@@ -73,7 +72,7 @@ static int deflate_decomp_init(struct deflate_ctx *ctx)
        int ret = 0;
        struct z_stream_s *stream = &ctx->decomp_stream;
 
-       stream->workspace = kzalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
+       stream->workspace = vzalloc(zlib_inflate_workspacesize());
        if (!stream->workspace) {
                ret = -ENOMEM;
                goto out;
@@ -86,7 +85,7 @@ static int deflate_decomp_init(struct deflate_ctx *ctx)
 out:
        return ret;
 out_free:
-       kfree(stream->workspace);
+       vfree(stream->workspace);
        goto out;
 }
 
@@ -99,7 +98,7 @@ static void deflate_comp_exit(struct deflate_ctx *ctx)
 static void deflate_decomp_exit(struct deflate_ctx *ctx)
 {
        zlib_inflateEnd(&ctx->decomp_stream);
-       kfree(ctx->decomp_stream.workspace);
+       vfree(ctx->decomp_stream.workspace);
 }
 
 static int deflate_init(struct crypto_tfm *tfm)