diff options
| author | Chris Mason <chris.mason@oracle.com> | 2009-06-10 15:51:32 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2009-06-10 17:29:52 +0200 |
| commit | c289811cc096c57ff35550ee8132793a4f9b5b59 (patch) | |
| tree | 47599d47419911c8365e0350e286dece1d5e48dd /fs/btrfs/ctree.h | |
| parent | Btrfs: add mount -o ssd_spread to spread allocations out (diff) | |
| download | linux-c289811cc096c57ff35550ee8132793a4f9b5b59.tar.xz 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/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index b9d8788b299e..5fa7d7d287a4 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1101,6 +1101,7 @@ struct btrfs_root { #define BTRFS_MOUNT_NOTREELOG (1 << 6) #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) +#define BTRFS_MOUNT_NOSSD (1 << 9) #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) |