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authorChris Mason <chris.mason@oracle.com>2009-06-09 16:42:22 -0400
committerChris Mason <chris.mason@oracle.com>2009-06-10 11:29:50 -0400
commit3b30c22f64a6bb297719c60e494af1d26563f584 (patch)
tree2730226cb21de6c61f6d1fb265c64523e0073354
parentd644d8a1e30b88a93bcfb63cada2ae628462ddba (diff)
downloadop-kernel-dev-3b30c22f64a6bb297719c60e494af1d26563f584.zip
op-kernel-dev-3b30c22f64a6bb297719c60e494af1d26563f584.tar.gz
Btrfs: Add mount -o nossd
This allows you to turn off the ssd mode via remount. Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/super.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index e9ef8c3..22855a1 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -66,8 +66,8 @@ static void btrfs_put_super(struct super_block *sb)
enum {
Opt_degraded, Opt_subvol, Opt_device, Opt_nodatasum, Opt_nodatacow,
Opt_max_extent, Opt_max_inline, Opt_alloc_start, Opt_nobarrier,
- Opt_ssd, Opt_thread_pool, Opt_noacl, Opt_compress, Opt_notreelog,
- Opt_ratio, Opt_flushoncommit, Opt_err,
+ Opt_ssd, Opt_nossd, Opt_thread_pool, Opt_noacl, Opt_compress,
+ Opt_notreelog, Opt_ratio, Opt_flushoncommit, Opt_err,
};
static match_table_t tokens = {
@@ -83,6 +83,7 @@ static match_table_t tokens = {
{Opt_thread_pool, "thread_pool=%d"},
{Opt_compress, "compress"},
{Opt_ssd, "ssd"},
+ {Opt_nossd, "nossd"},
{Opt_noacl, "noacl"},
{Opt_notreelog, "notreelog"},
{Opt_flushoncommit, "flushoncommit"},
@@ -173,6 +174,10 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
printk(KERN_INFO "btrfs: use ssd allocation scheme\n");
btrfs_set_opt(info->mount_opt, SSD);
break;
+ case Opt_nossd:
+ printk(KERN_INFO "btrfs: not using ssd allocation scheme\n");
+ btrfs_clear_opt(info->mount_opt, SSD);
+ break;
case Opt_nobarrier:
printk(KERN_INFO "btrfs: turning off barriers\n");
btrfs_set_opt(info->mount_opt, NOBARRIER);
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