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btrfs: Call kunmap if zlib_inflateInit2 fails

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If zlib_inflateInit2 fails, the input page is never unmapped.
Add a call to kunmap when it fails.

Signed-off-by: Nick Terrell <nickrterrell@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nick Terrell 2016-11-01 20:25:27 -07:00 committed by David Sterba
parent ed0df618b1
commit d1111a7547
1 changed files with 1 additions and 0 deletions
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fs/btrfs/zlib.c
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@ -250,6 +250,7 @@ static int zlib_decompress_biovec(struct list_head *ws, struct page **pages_in,
if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {
pr_warn("BTRFS: inflateInit failed\n");
kunmap(pages_in[page_in_index]);
return -EIO;
}
while (workspace->strm.total_in < srclen) {