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| author | David Sterba <dsterba@suse.com> | 2017-02-14 19:45:05 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-02-28 14:26:36 +0100 |
| commit | e5d74902362f1a06ea3674042d09f1af178c0a20 (patch) | |
| tree | 18b3bf38ac7e1d72923e423156f5e1843317f695 /fs/btrfs/lzo.c | |
| parent | 069eac7850890acf0d3c21a6c8ca9f33ddb34a0d (diff) | |
| download | blackbird-obmc-linux-e5d74902362f1a06ea3674042d09f1af178c0a20.tar.gz blackbird-obmc-linux-e5d74902362f1a06ea3674042d09f1af178c0a20.zip | |
btrfs: derive maximum output size in the compression implementation
The value of max_out can be calculated from the parameters passed to the
compressors, which is number of pages and the page size, and we don't
have to needlessly pass it around.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/lzo.c')
| -rw-r--r-- | fs/btrfs/lzo.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c index 0baf978fbcaf..f48c8c14dc14 100644 --- a/fs/btrfs/lzo.c +++ b/fs/btrfs/lzo.c @@ -90,8 +90,7 @@ static int lzo_compress_pages(struct list_head *ws, struct page **pages, unsigned long *out_pages, unsigned long *total_in, - unsigned long *total_out, - unsigned long max_out) + unsigned long *total_out) { struct workspace *workspace = list_entry(ws, struct workspace, list); int ret = 0; @@ -103,6 +102,7 @@ static int lzo_compress_pages(struct list_head *ws, unsigned long bytes_left; unsigned long len = *total_out; unsigned long nr_dest_pages = *out_pages; + const unsigned long max_out = nr_dest_pages * PAGE_SIZE; size_t in_len; size_t out_len; char *buf; |
