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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/jffs2/compr_lzo.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/jffs2/compr_lzo.c')
-rw-r--r--ANDROID_3.4.5/fs/jffs2/compr_lzo.c110
1 files changed, 0 insertions, 110 deletions
diff --git a/ANDROID_3.4.5/fs/jffs2/compr_lzo.c b/ANDROID_3.4.5/fs/jffs2/compr_lzo.c
deleted file mode 100644
index c553bd65..00000000
--- a/ANDROID_3.4.5/fs/jffs2/compr_lzo.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * JFFS2 -- Journalling Flash File System, Version 2.
- *
- * Copyright © 2007 Nokia Corporation. All rights reserved.
- * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org>
- *
- * Created by Richard Purdie <rpurdie@openedhand.com>
- *
- * For licensing information, see the file 'LICENCE' in this directory.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/lzo.h>
-#include "compr.h"
-
-static void *lzo_mem;
-static void *lzo_compress_buf;
-static DEFINE_MUTEX(deflate_mutex); /* for lzo_mem and lzo_compress_buf */
-
-static void free_workspace(void)
-{
- vfree(lzo_mem);
- vfree(lzo_compress_buf);
-}
-
-static int __init alloc_workspace(void)
-{
- lzo_mem = vmalloc(LZO1X_MEM_COMPRESS);
- lzo_compress_buf = vmalloc(lzo1x_worst_compress(PAGE_SIZE));
-
- if (!lzo_mem || !lzo_compress_buf) {
- free_workspace();
- return -ENOMEM;
- }
-
- return 0;
-}
-
-static int jffs2_lzo_compress(unsigned char *data_in, unsigned char *cpage_out,
- uint32_t *sourcelen, uint32_t *dstlen)
-{
- size_t compress_size;
- int ret;
-
- mutex_lock(&deflate_mutex);
- ret = lzo1x_1_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem);
- if (ret != LZO_E_OK)
- goto fail;
-
- if (compress_size > *dstlen)
- goto fail;
-
- memcpy(cpage_out, lzo_compress_buf, compress_size);
- mutex_unlock(&deflate_mutex);
-
- *dstlen = compress_size;
- return 0;
-
- fail:
- mutex_unlock(&deflate_mutex);
- return -1;
-}
-
-static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out,
- uint32_t srclen, uint32_t destlen)
-{
- size_t dl = destlen;
- int ret;
-
- ret = lzo1x_decompress_safe(data_in, srclen, cpage_out, &dl);
-
- if (ret != LZO_E_OK || dl != destlen)
- return -1;
-
- return 0;
-}
-
-static struct jffs2_compressor jffs2_lzo_comp = {
- .priority = JFFS2_LZO_PRIORITY,
- .name = "lzo",
- .compr = JFFS2_COMPR_LZO,
- .compress = &jffs2_lzo_compress,
- .decompress = &jffs2_lzo_decompress,
- .disabled = 0,
-};
-
-int __init jffs2_lzo_init(void)
-{
- int ret;
-
- ret = alloc_workspace();
- if (ret < 0)
- return ret;
-
- ret = jffs2_register_compressor(&jffs2_lzo_comp);
- if (ret)
- free_workspace();
-
- return ret;
-}
-
-void jffs2_lzo_exit(void)
-{
- jffs2_unregister_compressor(&jffs2_lzo_comp);
- free_workspace();
-}