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Subject[PATCH 4/4] fs/pstore: fs/squashfs: Change usage of LZ4 to work with new LZ4 version
Date
This patch updates fs/pstore and fs/squashfs to use the updated
functions from the new LZ4 module.

Signed-off-by: Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
---
fs/pstore/platform.c | 14 +++++++-------
fs/squashfs/lz4_wrapper.c | 12 ++++++------
2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 729677e..85c4c58 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -342,31 +342,31 @@ static int compress_lz4(const void *in, void *out, size_t inlen, size_t outlen)
{
int ret;

- ret = lz4_compress(in, inlen, out, &outlen, workspace);
- if (ret) {
+ ret = LZ4_compress_default(in, out, inlen, outlen, workspace);
+ if (!ret) {
pr_err("lz4_compress error, ret = %d!\n", ret);
return -EIO;
}

- return outlen;
+ return ret;
}

static int decompress_lz4(void *in, void *out, size_t inlen, size_t outlen)
{
int ret;

- ret = lz4_decompress_unknownoutputsize(in, inlen, out, &outlen);
- if (ret) {
+ ret = LZ4_decompress_safe(in, out, inlen, outlen);
+ if (ret < 0) {
pr_err("lz4_decompress error, ret = %d!\n", ret);
return -EIO;
}

- return outlen;
+ return ret;
}

static void allocate_lz4(void)
{
- big_oops_buf_sz = lz4_compressbound(psinfo->bufsize);
+ big_oops_buf_sz = LZ4_compressBound(psinfo->bufsize);
big_oops_buf = kmalloc(big_oops_buf_sz, GFP_KERNEL);
if (big_oops_buf) {
workspace = kmalloc(LZ4_MEM_COMPRESS, GFP_KERNEL);
diff --git a/fs/squashfs/lz4_wrapper.c b/fs/squashfs/lz4_wrapper.c
index ff4468b..95da653 100644
--- a/fs/squashfs/lz4_wrapper.c
+++ b/fs/squashfs/lz4_wrapper.c
@@ -97,7 +97,6 @@ static int lz4_uncompress(struct squashfs_sb_info *msblk, void *strm,
struct squashfs_lz4 *stream = strm;
void *buff = stream->input, *data;
int avail, i, bytes = length, res;
- size_t dest_len = output->length;

for (i = 0; i < b; i++) {
avail = min(bytes, msblk->devblksize - offset);
@@ -108,12 +107,13 @@ static int lz4_uncompress(struct squashfs_sb_info *msblk, void *strm,
put_bh(bh[i]);
}

- res = lz4_decompress_unknownoutputsize(stream->input, length,
- stream->output, &dest_len);
- if (res)
+ res = LZ4_decompress_safe(stream->input, stream->output,
+ length, output->length);
+
+ if (res < 0)
return -EIO;

- bytes = dest_len;
+ bytes = res;
data = squashfs_first_page(output);
buff = stream->output;
while (data) {
@@ -128,7 +128,7 @@ static int lz4_uncompress(struct squashfs_sb_info *msblk, void *strm,
}
squashfs_finish_page(output);

- return dest_len;
+ return res;
}

const struct squashfs_decompressor squashfs_lz4_comp_ops = {
--
2.1.4
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