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| author | Chris Mason <chris.mason@oracle.com> | 2009-06-10 09:51:32 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2009-06-10 11:29:52 -0400 |
| commit | c289811cc096c57ff35550ee8132793a4f9b5b59 (patch) | |
| tree | 47599d47419911c8365e0350e286dece1d5e48dd /fs/btrfs/volumes.c | |
| parent | 451d7585a8bb1b9bec0d676ce3dece1923164e55 (diff) | |
| download | kernel_samsung_smdk4412-c289811cc096c57ff35550ee8132793a4f9b5b59.zip kernel_samsung_smdk4412-c289811cc096c57ff35550ee8132793a4f9b5b59.tar.gz kernel_samsung_smdk4412-c289811cc096c57ff35550ee8132793a4f9b5b59.tar.bz2 | |
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/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 27d5f37..3f4a593 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -605,6 +605,9 @@ static int __btrfs_open_devices(struct btrfs_fs_devices *fs_devices, device->in_fs_metadata = 0; device->mode = flags; + if (!blk_queue_nonrot(bdev_get_queue(bdev))) + fs_devices->rotating = 1; + fs_devices->open_devices++; if (device->writeable) { fs_devices->rw_devices++; @@ -1473,6 +1476,9 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) root->fs_info->fs_devices->rw_devices++; root->fs_info->fs_devices->total_rw_bytes += device->total_bytes; + if (!blk_queue_nonrot(bdev_get_queue(bdev))) + root->fs_info->fs_devices->rotating = 1; + total_bytes = btrfs_super_total_bytes(&root->fs_info->super_copy); btrfs_set_super_total_bytes(&root->fs_info->super_copy, total_bytes + device->total_bytes); |