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| author | Chris Mason | 2009-06-10 15:51:32 +0200 |
|---|---|---|
| committer | Chris Mason | 2009-06-10 17:29:52 +0200 |
| commit | c289811cc096c57ff35550ee8132793a4f9b5b59 (patch) | |
| tree | 47599d47419911c8365e0350e286dece1d5e48dd /fs/btrfs/super.c | |
| parent | Btrfs: add mount -o ssd_spread to spread allocations out (diff) | |
| download | kernel-qcow2-linux-c289811cc096c57ff35550ee8132793a4f9b5b59.tar.gz kernel-qcow2-linux-c289811cc096c57ff35550ee8132793a4f9b5b59.tar.xz kernel-qcow2-linux-c289811cc096c57ff35550ee8132793a4f9b5b59.zip | |
Btrfs: autodetect SSD devices
During mount, btrfs will check the queue nonrot flag
for all the devices found in the FS. If they are all
non-rotating, SSD mode is enabled by default.
If the FS was mounted with -o nossd, the non-rotating
flag is ignored.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 7f5b2889949a..3427db28f6fe 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -184,6 +184,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) case Opt_nossd: printk(KERN_INFO "btrfs: not using ssd allocation " "scheme\n"); + btrfs_set_opt(info->mount_opt, NOSSD); btrfs_clear_opt(info->mount_opt, SSD); btrfs_clear_opt(info->mount_opt, SSD_SPREAD); break; @@ -438,6 +439,8 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs) seq_printf(seq, ",thread_pool=%d", info->thread_pool_size); if (btrfs_test_opt(root, COMPRESS)) seq_puts(seq, ",compress"); + if (btrfs_test_opt(root, NOSSD)) + seq_puts(seq, ",nossd"); if (btrfs_test_opt(root, SSD_SPREAD)) seq_puts(seq, ",ssd_spread"); else if (btrfs_test_opt(root, SSD)) |