Btrfs: actually limit the size of delalloc range

[cascardo/linux.git] / fs / btrfs / ordered-data.c

diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index 8136982..966b413 100644 (file)
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -67,7 +67,7 @@ static void ordered_data_tree_panic(struct inode *inode, int errno,
 {
        struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
        btrfs_panic(fs_info, errno, "Inconsistency in ordered tree at offset "
-                   "%llu\n", (unsigned long long)offset);
+                   "%llu\n", offset);
 }
 
 /*
@@ -205,6 +205,7 @@ static int __btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
        entry->bytes_left = len;
        entry->inode = igrab(inode);
        entry->compress_type = compress_type;
+       entry->truncated_len = (u64)-1;
        if (type != BTRFS_ORDERED_IO_DONE && type != BTRFS_ORDERED_COMPLETE)
                set_bit(type, &entry->flags);
 
@@ -336,14 +337,12 @@ int btrfs_dec_test_first_ordered_pending(struct inode *inode,
        *file_offset = dec_end;
        if (dec_start > dec_end) {
                printk(KERN_CRIT "bad ordering dec_start %llu end %llu\n",
-                      (unsigned long long)dec_start,
-                      (unsigned long long)dec_end);
+                      dec_start, dec_end);
        }
        to_dec = dec_end - dec_start;
        if (to_dec > entry->bytes_left) {
                printk(KERN_CRIT "bad ordered accounting left %llu size %llu\n",
-                      (unsigned long long)entry->bytes_left,
-                      (unsigned long long)to_dec);
+                      entry->bytes_left, to_dec);
        }
        entry->bytes_left -= to_dec;
        if (!uptodate)
@@ -403,8 +402,7 @@ have_entry:
 
        if (io_size > entry->bytes_left) {
                printk(KERN_CRIT "bad ordered accounting left %llu size %llu\n",
-                      (unsigned long long)entry->bytes_left,
-                      (unsigned long long)io_size);
+                      entry->bytes_left, io_size);
        }
        entry->bytes_left -= io_size;
        if (!uptodate)
@@ -671,7 +669,7 @@ int btrfs_run_ordered_operations(struct btrfs_trans_handle *trans,
        INIT_LIST_HEAD(&splice);
        INIT_LIST_HEAD(&works);
 
-       mutex_lock(&root->fs_info->ordered_operations_mutex);
+       mutex_lock(&root->fs_info->ordered_extent_flush_mutex);
        spin_lock(&root->fs_info->ordered_root_lock);
        list_splice_init(&cur_trans->ordered_operations, &splice);
        while (!list_empty(&splice)) {
@@ -718,7 +716,7 @@ out:
                list_del_init(&work->list);
                btrfs_wait_and_free_delalloc_work(work);
        }
-       mutex_unlock(&root->fs_info->ordered_operations_mutex);
+       mutex_unlock(&root->fs_info->ordered_extent_flush_mutex);
        return ret;
 }
 
@@ -923,12 +921,16 @@ int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
        struct btrfs_ordered_extent *test;
        int ret = 1;
 
-       if (ordered)
+       spin_lock_irq(&tree->lock);
+       if (ordered) {
                offset = entry_end(ordered);
-       else
+               if (test_bit(BTRFS_ORDERED_TRUNCATED, &ordered->flags))
+                       offset = min(offset,
+                                    ordered->file_offset +
+                                    ordered->truncated_len);
+       } else {
                offset = ALIGN(offset, BTRFS_I(inode)->root->sectorsize);
-
-       spin_lock_irq(&tree->lock);
+       }
        disk_i_size = BTRFS_I(inode)->disk_i_size;
 
        /* truncate file */