Btrfs: constify dentry_operations

[safe/jmp/linux-2.6] / fs / btrfs / ctree.h

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 80599b4..36a19cd 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -675,21 +675,28 @@ struct btrfs_space_info {
                                   current allocations */
        u64 bytes_readonly;     /* total bytes that are read only */
        u64 bytes_super;        /* total bytes reserved for the super blocks */
-
-       /* delalloc accounting */
-       u64 bytes_delalloc;     /* number of bytes reserved for allocation,
-                                  this space is not necessarily reserved yet
-                                  by the allocator */
+       u64 bytes_root;         /* the number of bytes needed to commit a
+                                  transaction */
        u64 bytes_may_use;      /* number of bytes that may be used for
-                                  delalloc */
+                                  delalloc/allocations */
+       u64 bytes_delalloc;     /* number of bytes currently reserved for
+                                  delayed allocation */
 
        int full;               /* indicates that we cannot allocate any more
                                   chunks for this space */
        int force_alloc;        /* set if we need to force a chunk alloc for
                                   this space */
+       int force_delalloc;     /* make people start doing filemap_flush until
+                                  we're under a threshold */
 
        struct list_head list;
 
+       /* for controlling how we free up space for allocations */
+       wait_queue_head_t allocate_wait;
+       wait_queue_head_t flush_wait;
+       int allocating_chunk;
+       int flushing;
+
        /* for block groups in our same type */
        struct list_head block_groups;
        spinlock_t lock;
@@ -903,6 +910,7 @@ struct btrfs_fs_info {
         * A third pool does submit_bio to avoid deadlocking with the other
         * two
         */
+       struct btrfs_workers generic_worker;
        struct btrfs_workers workers;
        struct btrfs_workers delalloc_workers;
        struct btrfs_workers endio_workers;
@@ -910,6 +918,7 @@ struct btrfs_fs_info {
        struct btrfs_workers endio_meta_write_workers;
        struct btrfs_workers endio_write_workers;
        struct btrfs_workers submit_workers;
+       struct btrfs_workers enospc_workers;
        /*
         * fixup workers take dirty pages that didn't properly go through
         * the cow mechanism and make them safe to write.  It happens
@@ -1001,6 +1010,8 @@ struct btrfs_root {
        atomic_t log_commit[2];
        unsigned long log_transid;
        unsigned long log_batch;
+       pid_t log_start_pid;
+       bool log_multiple_pids;
 
        u64 objectid;
        u64 last_trans;
@@ -2022,7 +2033,12 @@ u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags);
 void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde);
 void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
 
-int btrfs_check_metadata_free_space(struct btrfs_root *root);
+int btrfs_reserve_metadata_space(struct btrfs_root *root, int num_items);
+int btrfs_unreserve_metadata_space(struct btrfs_root *root, int num_items);
+int btrfs_unreserve_metadata_for_delalloc(struct btrfs_root *root,
+                                         struct inode *inode, int num_items);
+int btrfs_reserve_metadata_for_delalloc(struct btrfs_root *root,
+                                       struct inode *inode, int num_items);
 int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode,
                                u64 bytes);
 void btrfs_free_reserved_data_space(struct btrfs_root *root,
@@ -2314,7 +2330,7 @@ int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
 void btrfs_orphan_cleanup(struct btrfs_root *root);
 int btrfs_cont_expand(struct inode *inode, loff_t size);
 int btrfs_invalidate_inodes(struct btrfs_root *root);
-extern struct dentry_operations btrfs_dentry_operations;
+extern const struct dentry_operations btrfs_dentry_operations;
 
 /* ioctl.c */
 long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
@@ -2357,7 +2373,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options);
 int btrfs_sync_fs(struct super_block *sb, int wait);
 
 /* acl.c */
-#ifdef CONFIG_FS_POSIX_ACL
+#ifdef CONFIG_BTRFS_POSIX_ACL
 int btrfs_check_acl(struct inode *inode, int mask);
 #else
 #define btrfs_check_acl NULL