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authorHoward McLauchlan <hmclauchlan@fb.com>2018-03-08 10:48:48 -0800
committerDavid Sterba <dsterba@suse.com>2018-03-31 01:26:52 +0200
commit62b8e077317971b74d79c9cc501db2ae861d48b2 (patch)
tree29473f3709f80ca745b5844a5edbe4116255f8b2 /fs/btrfs/super.c
parent92e2f7e37004115db2ba98c6999a74ff5e41c83f (diff)
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btrfs: Add nossd_spread mount option
Btrfs has two mount options for SSD optimizations: ssd and ssd_spread. Presently there is an option to disable all SSD optimizations, but there isn't an option to disable just ssd_spread. This patch adds a mount option nossd_spread that disables ssd_spread only. Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Howard McLauchlan <hmclauchlan@fb.com> Reviewed-by: Omar Sandoval <osandov@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index defaccde8d16..121b9d40ff8f 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -310,10 +310,10 @@ static void btrfs_put_super(struct super_block *sb)
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_type, Opt_compress_force, Opt_compress_force_type,
- Opt_notreelog, Opt_ratio, Opt_flushoncommit, Opt_discard,
- Opt_space_cache, Opt_space_cache_version, Opt_clear_cache,
+ Opt_nossd, Opt_ssd_spread, Opt_nossd_spread, Opt_thread_pool, Opt_noacl,
+ Opt_compress, Opt_compress_type, Opt_compress_force,
+ Opt_compress_force_type, Opt_notreelog, Opt_ratio, Opt_flushoncommit,
+ Opt_discard, Opt_space_cache, Opt_space_cache_version, Opt_clear_cache,
Opt_user_subvol_rm_allowed, Opt_enospc_debug, Opt_subvolrootid,
Opt_defrag, Opt_inode_cache, Opt_no_space_cache, Opt_recovery,
Opt_skip_balance, Opt_check_integrity,
@@ -353,6 +353,7 @@ static const match_table_t tokens = {
{Opt_ssd, "ssd"},
{Opt_ssd_spread, "ssd_spread"},
{Opt_nossd, "nossd"},
+ {Opt_nossd_spread, "nossd_spread"},
{Opt_acl, "acl"},
{Opt_noacl, "noacl"},
{Opt_notreelog, "notreelog"},
@@ -579,6 +580,8 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
btrfs_set_opt(info->mount_opt, NOSSD);
btrfs_clear_and_info(info, SSD,
"not using ssd optimizations");
+ /* Fallthrough */
+ case Opt_nossd_spread:
btrfs_clear_and_info(info, SSD_SPREAD,
"not using spread ssd allocation scheme");
break;