1 files changed, 10 insertions, 3 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index bc96c03dd259..4c48df572bd6 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -609,6 +609,7 @@ struct btrfs_path {
         unsigned int skip_locking:1;
         unsigned int leave_spinning:1;
         unsigned int search_commit_root:1;
+        unsigned int need_commit_sem:1;
 };
 
 /*
@@ -986,7 +987,8 @@ struct btrfs_dev_replace_item {
 #define BTRFS_BLOCK_GROUP_RAID10        (1ULL << 6)
 #define BTRFS_BLOCK_GROUP_RAID5         (1ULL << 7)
 #define BTRFS_BLOCK_GROUP_RAID6         (1ULL << 8)
-#define BTRFS_BLOCK_GROUP_RESERVED      BTRFS_AVAIL_ALLOC_BIT_SINGLE
+#define BTRFS_BLOCK_GROUP_RESERVED      (BTRFS_AVAIL_ALLOC_BIT_SINGLE | \
+                                         BTRFS_SPACE_INFO_GLOBAL_RSV)
 
 enum btrfs_raid_types {
         BTRFS_RAID_RAID10,
@@ -1018,6 +1020,12 @@ enum btrfs_raid_types {
  */
 #define BTRFS_AVAIL_ALLOC_BIT_SINGLE    (1ULL << 48)
 
+/*
+ * A fake block group type that is used to communicate global block reserve
+ * size to userspace via the SPACE_INFO ioctl.
+ */
+#define BTRFS_SPACE_INFO_GLOBAL_RSV     (1ULL << 49)
+
 #define BTRFS_EXTENDED_PROFILE_MASK     (BTRFS_BLOCK_GROUP_PROFILE_MASK | \
                                          BTRFS_AVAIL_ALLOC_BIT_SINGLE)
 
@@ -1440,7 +1448,7 @@ struct btrfs_fs_info {
          */
         struct mutex ordered_extent_flush_mutex;
 
-        struct rw_semaphore extent_commit_sem;
+        struct rw_semaphore commit_root_sem;
 
         struct rw_semaphore cleanup_work_sem;
 
@@ -1711,7 +1719,6 @@ struct btrfs_root {
         struct btrfs_block_rsv *block_rsv;
 
         /* free ino cache stuff */
-        struct mutex fs_commit_mutex;
         struct btrfs_free_space_ctl *free_ino_ctl;
         enum btrfs_caching_type cached;
         spinlock_t cache_lock;