Adds an ability to change the read_mirror_policy at remount. Signed-off-by: Anand Jain <anand.j...@oracle.com> --- fs/btrfs/super.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 7ddecf4178a6..e70592036b95 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -856,6 +856,12 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, intarg = 0; if (match_int(&args[0], &intarg) == 0) { struct btrfs_device *device; + int clear = 0; + + if (intarg < 0) { + clear = 1; + intarg = -intarg; + } device = btrfs_find_device(info, intarg, NULL, NULL); @@ -866,10 +872,17 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, ret = -EINVAL; goto out; } - info->read_mirror_policy = + + if (clear) { + info->read_mirror_policy = 0; + clear_bit(BTRFS_DEV_STATE_READ_MIRROR, + &device->dev_state); + } else { + info->read_mirror_policy = BTRFS_READ_MIRROR_BY_DEV; - set_bit(BTRFS_DEV_STATE_READ_MIRROR, - &device->dev_state); + set_bit(BTRFS_DEV_STATE_READ_MIRROR, + &device->dev_state); + } break; } -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html