Btrfs: fix enospc error caused by wrong checks of the chunk

[linux-2.6-block.git] / fs / btrfs / disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index f44b3928dc2dc94cb62cefe72f1063f282dc09c2..da4457f84d78d7246ac8ce4f1640664f90d4e92f 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -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);
@@ -1243,7 +1244,8 @@ 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);
@@ -2001,6 +2003,17 @@ struct btrfs_root *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);
@@ -2270,9 +2283,7 @@ struct btrfs_root *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);
@@ -2321,9 +2332,6 @@ 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) {
@@ -2356,6 +2364,19 @@ 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)) {
@@ -2426,6 +2447,10 @@ 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_PTR(err);
@@ -2634,7 +2659,7 @@ 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 +2736,7 @@ 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 +3000,9 @@ 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 +3085,11 @@ 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);