Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

[pandora-kernel.git] / fs / btrfs / volumes.c

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 198cff2..41ecbb2 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1135,7 +1135,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
                root->fs_info->avail_metadata_alloc_bits;
 
        if ((all_avail & BTRFS_BLOCK_GROUP_RAID10) &&
-           root->fs_info->fs_devices->rw_devices <= 4) {
+           root->fs_info->fs_devices->num_devices <= 4) {
                printk(KERN_ERR "btrfs: unable to go below four devices "
                       "on raid10\n");
                ret = -EINVAL;
@@ -1143,7 +1143,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
        }
 
        if ((all_avail & BTRFS_BLOCK_GROUP_RAID1) &&
-           root->fs_info->fs_devices->rw_devices <= 2) {
+           root->fs_info->fs_devices->num_devices <= 2) {
                printk(KERN_ERR "btrfs: unable to go below two "
                       "devices on raid1\n");
                ret = -EINVAL;
@@ -1434,8 +1434,8 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
                return -EINVAL;
 
        bdev = open_bdev_exclusive(device_path, 0, root->fs_info->bdev_holder);
-       if (!bdev)
-               return -EIO;
+       if (IS_ERR(bdev))
+               return PTR_ERR(bdev);
 
        if (root->fs_info->fs_devices->seeding) {
                seeding_dev = 1;
@@ -2538,6 +2538,11 @@ int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset)
        if (!em)
                return 1;
 
+       if (btrfs_test_opt(root, DEGRADED)) {
+               free_extent_map(em);
+               return 0;
+       }
+
        map = (struct map_lookup *)em->bdev;
        for (i = 0; i < map->num_stripes; i++) {
                if (!map->stripes[i].dev->writeable) {
@@ -2649,8 +2654,10 @@ again:
        em = lookup_extent_mapping(em_tree, logical, *length);
        read_unlock(&em_tree->lock);
 
-       if (!em && unplug_page)
+       if (!em && unplug_page) {
+               kfree(multi);
                return 0;
+       }
 
        if (!em) {
                printk(KERN_CRIT "unable to find logical %llu len %llu\n",