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btrfs: derive maximum output size in the compression implementation

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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>
This commit is contained in:
David Sterba 2017-02-14 19:45:05 +01:00
parent 069eac7850
commit e5d7490236
5 changed files with 9 additions and 14 deletions
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6
fs/btrfs/compression.c
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@ -932,8 +932,7 @@ int btrfs_compress_pages(int type, struct address_space *mapping,
u64 start, struct page **pages,
unsigned long *out_pages,
unsigned long *total_in,
unsigned long *total_out,
unsigned long max_out)
unsigned long *total_out)
{
struct list_head *workspace;
int ret;
@ -943,8 +942,7 @@ int btrfs_compress_pages(int type, struct address_space *mapping,
ret = btrfs_compress_op[type-1]->compress_pages(workspace, mapping,
start, pages,
out_pages,
total_in, total_out,
max_out);
total_in, total_out);
free_workspace(type, workspace);
return ret;
}