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authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-14 17:44:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-14 17:44:56 -0700
commitd3304cadb2e24517938e24efd58fd9ee6504fefe (patch)
tree5bf53a560d3df9c89b5b0d5ed095fc386c91fca4 /fs/btrfs/disk-io.c
parent1a892b485f328224b4882818f84fcc0a3208677d (diff)
parentd9ed71e5457c8c5bf1dc706e06468eab9e2aa87e (diff)
downloadlinux-sh-d3304cadb2e24517938e24efd58fd9ee6504fefe.tar.gz
Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason: "Some fixes from Omar and Dave Sterba for our new free space tree. This isn't heavily used yet, but as we move toward making it the new default we wanted to nail down an endian bug" * 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: btrfs: tests: uninline member definitions in free_space_extent btrfs: tests: constify free space extent specs Btrfs: expand free space tree sanity tests to catch endianness bug Btrfs: fix extent buffer bitmap tests on big-endian systems Btrfs: catch invalid free space trees Btrfs: fix mount -o clear_cache,space_cache=v2 Btrfs: fix free space tree bitmaps on big-endian systems
Diffstat (limited to 'fs/btrfs/disk-io.c')
-rw-r--r--fs/btrfs/disk-io.c33
1 files changed, 21 insertions, 12 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index e720d3e6ec20..3a57f99d96aa 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2586,6 +2586,7 @@ int open_ctree(struct super_block *sb,
int num_backups_tried = 0;
int backup_index = 0;
int max_active;
+ int clear_free_space_tree = 0;
tree_root = fs_info->tree_root = btrfs_alloc_root(fs_info, GFP_KERNEL);
chunk_root = fs_info->chunk_root = btrfs_alloc_root(fs_info, GFP_KERNEL);
@@ -3148,6 +3149,26 @@ retry_root_backup:
if (sb->s_flags & MS_RDONLY)
return 0;
+ if (btrfs_test_opt(fs_info, CLEAR_CACHE) &&
+ btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE)) {
+ clear_free_space_tree = 1;
+ } else if (btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE) &&
+ !btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE_VALID)) {
+ btrfs_warn(fs_info, "free space tree is invalid");
+ clear_free_space_tree = 1;
+ }
+
+ if (clear_free_space_tree) {
+ btrfs_info(fs_info, "clearing free space tree");
+ ret = btrfs_clear_free_space_tree(fs_info);
+ if (ret) {
+ btrfs_warn(fs_info,
+ "failed to clear free space tree: %d", ret);
+ close_ctree(tree_root);
+ return ret;
+ }
+ }
+
if (btrfs_test_opt(tree_root->fs_info, FREE_SPACE_TREE) &&
!btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE)) {
btrfs_info(fs_info, "creating free space tree");
@@ -3185,18 +3206,6 @@ retry_root_backup:
btrfs_qgroup_rescan_resume(fs_info);
- if (btrfs_test_opt(tree_root->fs_info, CLEAR_CACHE) &&
- btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE)) {
- btrfs_info(fs_info, "clearing free space tree");
- ret = btrfs_clear_free_space_tree(fs_info);
- if (ret) {
- btrfs_warn(fs_info,
- "failed to clear free space tree: %d", ret);
- close_ctree(tree_root);
- return ret;
- }
- }
-
if (!fs_info->uuid_root) {
btrfs_info(fs_info, "creating UUID tree");
ret = btrfs_create_uuid_tree(fs_info);