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btrfs: show options: use helper to convert compression type string 

Use the helper, if the COMPRESS option is set, the result is always
defined and not empty.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-10-31 18:06:34 +01:00
parent 802a5c6958
commit 0f628c632d
1 changed files with 2 additions and 7 deletions
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9
fs/btrfs/super.c
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@ -1243,7 +1243,7 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
{
struct btrfs_fs_info *info = btrfs_sb(dentry->d_sb);
char *compress_type;
const char *compress_type;
if (btrfs_test_opt(info, DEGRADED))
seq_puts(seq, ",degraded");
@ -1259,12 +1259,7 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
num_online_cpus() + 2, 8))
seq_printf(seq, ",thread_pool=%d", info->thread_pool_size);
if (btrfs_test_opt(info, COMPRESS)) {
if (info->compress_type == BTRFS_COMPRESS_ZLIB)
compress_type = "zlib";
else if (info->compress_type == BTRFS_COMPRESS_LZO)
compress_type = "lzo";
else
compress_type = "zstd";
compress_type = btrfs_compress_type2str(info->compress_type);
if (btrfs_test_opt(info, FORCE_COMPRESS))
seq_printf(seq, ",compress-force=%s", compress_type);
else