Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

[pandora-kernel.git] / fs / btrfs / ctree.h

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6c093fa..3b859a3 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -19,7 +19,6 @@
 #ifndef __BTRFS_CTREE__
 #define __BTRFS_CTREE__
 
-#include <linux/version.h>
 #include <linux/mm.h>
 #include <linux/highmem.h>
 #include <linux/fs.h>
@@ -930,7 +929,6 @@ struct btrfs_fs_info {
         * is required instead of the faster short fsync log commits
         */
        u64 last_trans_log_full_commit;
-       u64 open_ioctl_trans;
        unsigned long mount_opt:20;
        unsigned long compress_type:4;
        u64 max_inline;
@@ -947,7 +945,6 @@ struct btrfs_fs_info {
        struct super_block *sb;
        struct inode *btree_inode;
        struct backing_dev_info bdi;
-       struct mutex trans_mutex;
        struct mutex tree_log_mutex;
        struct mutex transaction_kthread_mutex;
        struct mutex cleaner_mutex;
@@ -968,6 +965,13 @@ struct btrfs_fs_info {
        struct rw_semaphore subvol_sem;
        struct srcu_struct subvol_srcu;
 
+       spinlock_t trans_lock;
+       /*
+        * the reloc mutex goes with the trans lock, it is taken
+        * during commit to protect us from the relocation code
+        */
+       struct mutex reloc_mutex;
+
        struct list_head trans_list;
        struct list_head hashers;
        struct list_head dead_roots;
@@ -980,6 +984,7 @@ struct btrfs_fs_info {
        atomic_t async_submit_draining;
        atomic_t nr_async_bios;
        atomic_t async_delalloc_pages;
+       atomic_t open_ioctl_trans;
 
        /*
         * this is used by the balancing code to wait for all the pending
@@ -1044,6 +1049,7 @@ struct btrfs_fs_info {
        int closing;
        int log_root_recovering;
        int enospc_unlink;
+       int trans_no_join;
 
        u64 total_pinned;
 
@@ -1065,7 +1071,6 @@ struct btrfs_fs_info {
        struct reloc_control *reloc_ctl;
 
        spinlock_t delalloc_lock;
-       spinlock_t new_trans_lock;
        u64 delalloc_bytes;
 
        /* data_alloc_cluster is only used in ssd mode */
@@ -1172,6 +1177,14 @@ struct btrfs_root {
        u32 type;
 
        u64 highest_objectid;
+
+       /* btrfs_record_root_in_trans is a multi-step process,
+        * and it can race with the balancing code.   But the
+        * race is very small, and only the first time the root
+        * is added to each transaction.  So in_trans_setup
+        * is used to tell us when more checks are required
+        */
+       unsigned long in_trans_setup;
        int ref_cows;
        int track_dirty;
        int in_radix;
@@ -1181,7 +1194,6 @@ struct btrfs_root {
        struct btrfs_key defrag_max;
        int defrag_running;
        char *name;
-       int in_sysfs;
 
        /* the dirty list is only used by non-reference counted roots */
        struct list_head dirty_list;
@@ -1323,6 +1335,11 @@ struct btrfs_ioctl_defrag_range_args {
  */
 #define BTRFS_STRING_ITEM_KEY  253
 
+/*
+ * Flags for mount options.
+ *
+ * Note: don't forget to add new options to btrfs_show_options()
+ */
 #define BTRFS_MOUNT_NODATASUM          (1 << 0)
 #define BTRFS_MOUNT_NODATACOW          (1 << 1)
 #define BTRFS_MOUNT_NOBARRIER          (1 << 2)
@@ -1340,6 +1357,7 @@ struct btrfs_ioctl_defrag_range_args {
 #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14)
 #define BTRFS_MOUNT_ENOSPC_DEBUG        (1 << 15)
 #define BTRFS_MOUNT_AUTO_DEFRAG                (1 << 16)
+#define BTRFS_MOUNT_INODE_MAP_CACHE    (1 << 17)
 
 #define btrfs_clear_opt(o, opt)                ((o) &= ~BTRFS_MOUNT_##opt)
 #define btrfs_set_opt(o, opt)          ((o) |= BTRFS_MOUNT_##opt)
@@ -2238,6 +2256,9 @@ int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
 void btrfs_block_rsv_release(struct btrfs_root *root,
                             struct btrfs_block_rsv *block_rsv,
                             u64 num_bytes);
+int btrfs_truncate_reserve_metadata(struct btrfs_trans_handle *trans,
+                                   struct btrfs_root *root,
+                                   struct btrfs_block_rsv *rsv);
 int btrfs_set_block_group_ro(struct btrfs_root *root,
                             struct btrfs_block_group_cache *cache);
 int btrfs_set_block_group_rw(struct btrfs_root *root,
@@ -2350,6 +2371,15 @@ int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
                        struct btrfs_root *root,
                        struct extent_buffer *node,
                        struct extent_buffer *parent);
+static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
+{
+       /*
+        * Get synced with close_ctree()
+        */
+       smp_mb();
+       return fs_info->closing;
+}
+
 /* root-item.c */
 int btrfs_find_root_ref(struct btrfs_root *tree_root,
                        struct btrfs_path *path,
@@ -2512,8 +2542,7 @@ int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end,
 int btrfs_writepages(struct address_space *mapping,
                     struct writeback_control *wbc);
 int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
-                            struct btrfs_root *new_root,
-                            u64 new_dirid, u64 alloc_hint);
+                            struct btrfs_root *new_root, u64 new_dirid);
 int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
                         size_t size, struct bio *bio, unsigned long bio_flags);