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-rw-r--r--fs/btrfs/super.c50
1 files changed, 39 insertions, 11 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 61bd79a..a1a76b2 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -69,9 +69,9 @@ enum {
Opt_degraded, Opt_subvol, Opt_subvolid, Opt_device, Opt_nodatasum,
Opt_nodatacow, Opt_max_inline, Opt_alloc_start, Opt_nobarrier, Opt_ssd,
Opt_nossd, Opt_ssd_spread, Opt_thread_pool, Opt_noacl, Opt_compress,
- Opt_compress_force, Opt_notreelog, Opt_ratio, Opt_flushoncommit,
- Opt_discard, Opt_space_cache, Opt_clear_cache, Opt_err,
- Opt_user_subvol_rm_allowed,
+ Opt_compress_type, Opt_compress_force, Opt_compress_force_type,
+ Opt_notreelog, Opt_ratio, Opt_flushoncommit, Opt_discard,
+ Opt_space_cache, Opt_clear_cache, Opt_user_subvol_rm_allowed, Opt_err,
};
static match_table_t tokens = {
@@ -86,7 +86,9 @@ static match_table_t tokens = {
{Opt_alloc_start, "alloc_start=%s"},
{Opt_thread_pool, "thread_pool=%d"},
{Opt_compress, "compress"},
+ {Opt_compress_type, "compress=%s"},
{Opt_compress_force, "compress-force"},
+ {Opt_compress_force_type, "compress-force=%s"},
{Opt_ssd, "ssd"},
{Opt_ssd_spread, "ssd_spread"},
{Opt_nossd, "nossd"},
@@ -112,6 +114,8 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
char *p, *num, *orig;
int intarg;
int ret = 0;
+ char *compress_type;
+ bool compress_force = false;
if (!options)
return 0;
@@ -154,14 +158,32 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
btrfs_set_opt(info->mount_opt, NODATACOW);
btrfs_set_opt(info->mount_opt, NODATASUM);
break;
- case Opt_compress:
- printk(KERN_INFO "btrfs: use compression\n");
- btrfs_set_opt(info->mount_opt, COMPRESS);
- break;
case Opt_compress_force:
- printk(KERN_INFO "btrfs: forcing compression\n");
- btrfs_set_opt(info->mount_opt, FORCE_COMPRESS);
+ case Opt_compress_force_type:
+ compress_force = true;
+ case Opt_compress:
+ case Opt_compress_type:
+ if (token == Opt_compress ||
+ token == Opt_compress_force ||
+ strcmp(args[0].from, "zlib") == 0) {
+ compress_type = "zlib";
+ info->compress_type = BTRFS_COMPRESS_ZLIB;
+ } else if (strcmp(args[0].from, "lzo") == 0) {
+ compress_type = "lzo";
+ info->compress_type = BTRFS_COMPRESS_LZO;
+ } else {
+ ret = -EINVAL;
+ goto out;
+ }
+
btrfs_set_opt(info->mount_opt, COMPRESS);
+ if (compress_force) {
+ btrfs_set_opt(info->mount_opt, FORCE_COMPRESS);
+ pr_info("btrfs: force %s compression\n",
+ compress_type);
+ } else
+ pr_info("btrfs: use %s compression\n",
+ compress_type);
break;
case Opt_ssd:
printk(KERN_INFO "btrfs: use ssd allocation scheme\n");
@@ -898,10 +920,14 @@ static int __init init_btrfs_fs(void)
if (err)
return err;
- err = btrfs_init_cachep();
+ err = btrfs_init_compress();
if (err)
goto free_sysfs;
+ err = btrfs_init_cachep();
+ if (err)
+ goto free_compress;
+
err = extent_io_init();
if (err)
goto free_cachep;
@@ -929,6 +955,8 @@ free_extent_io:
extent_io_exit();
free_cachep:
btrfs_destroy_cachep();
+free_compress:
+ btrfs_exit_compress();
free_sysfs:
btrfs_exit_sysfs();
return err;
@@ -943,7 +971,7 @@ static void __exit exit_btrfs_fs(void)
unregister_filesystem(&btrfs_fs_type);
btrfs_exit_sysfs();
btrfs_cleanup_fs_uuids();
- btrfs_zlib_exit();
+ btrfs_exit_compress();
}
module_init(init_btrfs_fs)
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