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authorDavid Sterba <dsterba@suse.com>2017-02-14 19:04:07 +0100
committerDavid Sterba <dsterba@suse.com>2017-02-28 14:26:35 +0100
commit38c31464089f639630b7c28ce933a4d60e135a02 (patch)
treefd39ede7261635ac2f47ece7139c668820cf9db0 /fs/btrfs/lzo.c
parent52f75f4fe74ce86376d68b30c94d5fb11cb4019e (diff)
btrfs: merge length input and output parameter in compress_pages
The length parameter is basically duplicated for input and output in the top level caller of the compress_pages chain. We can simply use one variable for that and reduce stack consumption. The compression implementation will sink the parameter to a local variable so everything works as before. Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/lzo.c')
-rw-r--r--fs/btrfs/lzo.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c
index e074b85aa054..489f78c4e5ec 100644
--- a/fs/btrfs/lzo.c
+++ b/fs/btrfs/lzo.c
@@ -86,7 +86,7 @@ static inline size_t read_compress_length(const char *buf)
static int lzo_compress_pages(struct list_head *ws,
struct address_space *mapping,
- u64 start, unsigned long len,
+ u64 start,
struct page **pages,
unsigned long nr_dest_pages,
unsigned long *out_pages,
@@ -102,7 +102,7 @@ static int lzo_compress_pages(struct list_head *ws,
struct page *in_page = NULL;
struct page *out_page = NULL;
unsigned long bytes_left;
-
+ unsigned long len = *total_out;
size_t in_len;
size_t out_len;
char *buf;