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| author | Chris Mason <chris.mason@oracle.com> | 2009-06-09 22:42:22 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2009-06-10 17:29:50 +0200 |
| commit | 3b30c22f64a6bb297719c60e494af1d26563f584 (patch) | |
| tree | 2730226cb21de6c61f6d1fb265c64523e0073354 | |
| parent | Btrfs: avoid IO stalls behind congested devices in a multi-device FS (diff) | |
| download | linux-3b30c22f64a6bb297719c60e494af1d26563f584.tar.xz linux-3b30c22f64a6bb297719c60e494af1d26563f584.zip | |
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.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index e9ef8c3307fe..22855a18eb48 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); |