Merge branch 'btrfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[~shefty/rdma-dev.git] / fs / btrfs / disk-io.c
index dd71be8759394b30aedba74b40079d3f71f32369..7aa9cd36bf1b496efd2a02e7cc86c1a08a29c663 100644 (file)
@@ -43,6 +43,7 @@
 #include "tree-log.h"
 #include "free-space-cache.h"
 #include "inode-map.h"
+#include "check-integrity.h"
 
 static struct extent_io_ops btree_extent_io_ops;
 static void end_workqueue_fn(struct btrfs_work *work);
@@ -872,7 +873,8 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
 
 #ifdef CONFIG_MIGRATION
 static int btree_migratepage(struct address_space *mapping,
-                       struct page *newpage, struct page *page)
+                       struct page *newpage, struct page *page,
+                       enum migrate_mode mode)
 {
        /*
         * we can't safely write a btree page from here,
@@ -887,7 +889,7 @@ static int btree_migratepage(struct address_space *mapping,
        if (page_has_private(page) &&
            !try_to_release_page(page, GFP_KERNEL))
                return -EAGAIN;
-       return migrate_page(mapping, newpage, page);
+       return migrate_page(mapping, newpage, page, mode);
 }
 #endif
 
@@ -1250,7 +1252,8 @@ static struct btrfs_root *alloc_log_tree(struct btrfs_trans_handle *trans,
        root->ref_cows = 0;
 
        leaf = btrfs_alloc_free_block(trans, root, root->leafsize, 0,
-                                     BTRFS_TREE_LOG_OBJECTID, NULL, 0, 0, 0);
+                                     BTRFS_TREE_LOG_OBJECTID, NULL,
+                                     0, 0, 0, 0);
        if (IS_ERR(leaf)) {
                kfree(root);
                return ERR_CAST(leaf);
@@ -2002,6 +2005,17 @@ int open_ctree(struct super_block *sb,
        init_waitqueue_head(&fs_info->scrub_pause_wait);
        init_rwsem(&fs_info->scrub_super_lock);
        fs_info->scrub_workers_refcnt = 0;
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+       fs_info->check_integrity_print_mask = 0;
+#endif
+
+       spin_lock_init(&fs_info->balance_lock);
+       mutex_init(&fs_info->balance_mutex);
+       atomic_set(&fs_info->balance_running, 0);
+       atomic_set(&fs_info->balance_pause_req, 0);
+       atomic_set(&fs_info->balance_cancel_req, 0);
+       fs_info->balance_ctl = NULL;
+       init_waitqueue_head(&fs_info->balance_wait_q);
 
        sb->s_blocksize = 4096;
        sb->s_blocksize_bits = blksize_bits(4096);
@@ -2271,9 +2285,7 @@ int open_ctree(struct super_block *sb,
           (unsigned long)btrfs_header_chunk_tree_uuid(chunk_root->node),
           BTRFS_UUID_SIZE);
 
-       mutex_lock(&fs_info->chunk_mutex);
        ret = btrfs_read_chunk_tree(chunk_root);
-       mutex_unlock(&fs_info->chunk_mutex);
        if (ret) {
                printk(KERN_WARNING "btrfs: failed to read chunk tree on %s\n",
                       sb->s_id);
@@ -2322,9 +2334,6 @@ retry_root_backup:
 
        fs_info->generation = generation;
        fs_info->last_trans_committed = generation;
-       fs_info->data_alloc_profile = (u64)-1;
-       fs_info->metadata_alloc_profile = (u64)-1;
-       fs_info->system_alloc_profile = fs_info->metadata_alloc_profile;
 
        ret = btrfs_init_space_info(fs_info);
        if (ret) {
@@ -2357,6 +2366,19 @@ retry_root_backup:
                btrfs_set_opt(fs_info->mount_opt, SSD);
        }
 
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+       if (btrfs_test_opt(tree_root, CHECK_INTEGRITY)) {
+               ret = btrfsic_mount(tree_root, fs_devices,
+                                   btrfs_test_opt(tree_root,
+                                       CHECK_INTEGRITY_INCLUDING_EXTENT_DATA) ?
+                                   1 : 0,
+                                   fs_info->check_integrity_print_mask);
+               if (ret)
+                       printk(KERN_WARNING "btrfs: failed to initialize"
+                              " integrity check module %s\n", sb->s_id);
+       }
+#endif
+
        /* do not make disk changes in broken FS */
        if (btrfs_super_log_root(disk_super) != 0 &&
            !(fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR)) {
@@ -2427,6 +2449,10 @@ retry_root_backup:
                if (!err)
                        err = btrfs_orphan_cleanup(fs_info->tree_root);
                up_read(&fs_info->cleanup_work_sem);
+
+               if (!err)
+                       err = btrfs_recover_balance(fs_info->tree_root);
+
                if (err) {
                        close_ctree(tree_root);
                        return err;
@@ -2634,7 +2660,7 @@ static int write_dev_supers(struct btrfs_device *device,
                 * we fua the first super.  The others we allow
                 * to go down lazy.
                 */
-               ret = submit_bh(WRITE_FUA, bh);
+               ret = btrfsic_submit_bh(WRITE_FUA, bh);
                if (ret)
                        errors++;
        }
@@ -2711,7 +2737,7 @@ static int write_dev_flush(struct btrfs_device *device, int wait)
        device->flush_bio = bio;
 
        bio_get(bio);
-       submit_bio(WRITE_FLUSH, bio);
+       btrfsic_submit_bio(WRITE_FLUSH, bio);
 
        return 0;
 }
@@ -2975,6 +3001,9 @@ int close_ctree(struct btrfs_root *root)
        fs_info->closing = 1;
        smp_mb();
 
+       /* pause restriper - we want to resume on mount */
+       btrfs_pause_balance(root->fs_info);
+
        btrfs_scrub_cancel(root);
 
        /* wait for any defraggers to finish */
@@ -3057,6 +3086,11 @@ int close_ctree(struct btrfs_root *root)
        btrfs_stop_workers(&fs_info->caching_workers);
        btrfs_stop_workers(&fs_info->readahead_workers);
 
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+       if (btrfs_test_opt(root, CHECK_INTEGRITY))
+               btrfsic_unmount(root, fs_info->fs_devices);
+#endif
+
        btrfs_close_devices(fs_info->fs_devices);
        btrfs_mapping_tree_free(&fs_info->mapping_tree);