xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Btrfs: Implement basic support for -ENOSPC

Browse Source 
This is intended to prevent accidentally filling the drive.  A determined
user can still make things oops.

It includes some accounting of the current bytes under delayed allocation,
but this will change as things get optimized

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-12-21 16:27:21 -05:00
parent 01f4665805
commit 1832a6d5ee
6 changed files with 193 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
fs/btrfs/disk-io.c
View File

@@ -223,7 +223,8 @@ static int btree_writepages(struct address_space *mapping,
} else {
thresh = 8 * 1024 * 1024;
}
num_dirty = count_range_bits(tree, &start, thresh, EXTENT_DIRTY);
num_dirty = count_range_bits(tree, &start, (u64)-1,
thresh, EXTENT_DIRTY);
if (num_dirty < thresh) {
return 0;
}
@@ -559,6 +560,7 @@ struct btrfs_root *open_ctree(struct super_block *sb)
INIT_LIST_HEAD(&fs_info->dead_roots);
INIT_LIST_HEAD(&fs_info->hashers);
spin_lock_init(&fs_info->hash_lock);
spin_lock_init(&fs_info->delalloc_lock);
memset(&fs_info->super_kobj, 0, sizeof(fs_info->super_kobj));
init_completion(&fs_info->kobj_unregister);
@@ -570,6 +572,7 @@ struct btrfs_root *open_ctree(struct super_block *sb)
fs_info->sb = sb;
fs_info->mount_opt = 0;
fs_info->max_extent = (u64)-1;
fs_info->delalloc_bytes = 0;
fs_info->btree_inode = new_inode(sb);
fs_info->btree_inode->i_ino = 1;
fs_info->btree_inode->i_nlink = 1;