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author | David S. Miller <davem@davemloft.net> | 2017-03-23 15:11:56 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2017-03-23 16:41:27 -0700 |
commit | 16ae1f223601c44e5cb65c99257ffae003504704 (patch) | |
tree | 1f5284c0e82e4d94ca07eb022fa7911d99bb0cb6 /fs/btrfs/inode.c | |
parent | 6f359f99b8c2ff3b09329611da00fe39a7c10e7e (diff) | |
parent | d038e3dcfff6e3de132726a9c7174d8170032aa4 (diff) | |
download | linux-16ae1f223601c44e5cb65c99257ffae003504704.tar.bz2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/ethernet/broadcom/genet/bcmmii.c
drivers/net/hyperv/netvsc.c
kernel/bpf/hashtab.c
Almost entirely overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r-- | fs/btrfs/inode.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index c40060cc481f..231503935652 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -6709,6 +6709,20 @@ static noinline int uncompress_inline(struct btrfs_path *path, max_size = min_t(unsigned long, PAGE_SIZE, max_size); ret = btrfs_decompress(compress_type, tmp, page, extent_offset, inline_size, max_size); + + /* + * decompression code contains a memset to fill in any space between the end + * of the uncompressed data and the end of max_size in case the decompressed + * data ends up shorter than ram_bytes. That doesn't cover the hole between + * the end of an inline extent and the beginning of the next block, so we + * cover that region here. + */ + + if (max_size + pg_offset < PAGE_SIZE) { + char *map = kmap(page); + memset(map + pg_offset + max_size, 0, PAGE_SIZE - max_size - pg_offset); + kunmap(page); + } kfree(tmp); return ret; } |