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Btrfs: Add mount -o ssd, which includes optimizations for seek free storage

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-01-18 10:54:22 -05:00
parent 04005cc7a1
commit e18e4809b1
6 changed files with 47 additions and 2 deletions
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9
fs/btrfs/super.c
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@ -64,7 +64,7 @@ static void btrfs_put_super (struct super_block * sb)
enum {
Opt_subvol, Opt_nodatasum, Opt_nodatacow, Opt_max_extent,
Opt_alloc_start, Opt_nobarrier, Opt_err,
Opt_alloc_start, Opt_nobarrier, Opt_ssd, Opt_err,
};
static match_table_t tokens = {
@ -74,6 +74,7 @@ static match_table_t tokens = {
{Opt_nobarrier, "nobarrier"},
{Opt_max_extent, "max_extent=%s"},
{Opt_alloc_start, "alloc_start=%s"},
{Opt_ssd, "ssd"},
{Opt_err, NULL}
};
@ -149,6 +150,12 @@ static int parse_options (char * options,
btrfs_set_opt(info->mount_opt, NODATASUM);
}
break;
case Opt_ssd:
if (info) {
printk("btrfs: use ssd allocation scheme\n");
btrfs_set_opt(info->mount_opt, SSD);
}
break;
case Opt_nobarrier:
if (info) {
printk("btrfs: turning off barriers\n");