struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_trans_handle *trans;
u64 num_bytes;
- u64 orig_start;
- u64 disk_num_bytes;
u64 blocksize = root->sectorsize;
u64 actual_end;
u64 isize = i_size_read(inode);
int i;
int will_compress;
- orig_start = start;
-
actual_end = min_t(u64, isize, end + 1);
again:
will_compress = 0;
total_compressed = min(total_compressed, max_uncompressed);
num_bytes = (end - start + blocksize) & ~(blocksize - 1);
num_bytes = max(blocksize, num_bytes);
- disk_num_bytes = num_bytes;
total_in = 0;
ret = 0;
if (total_compressed >= total_in) {
will_compress = 0;
} else {
- disk_num_bytes = total_compressed;
num_bytes = total_in;
}
}
u64 disk_num_bytes;
u64 cur_alloc_size;
u64 blocksize = root->sectorsize;
- u64 actual_end;
- u64 isize = i_size_read(inode);
struct btrfs_key ins;
struct extent_map *em;
struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
int ret = 0;
+ BUG_ON(root == root->fs_info->tree_root);
trans = btrfs_join_transaction(root, 1);
BUG_ON(!trans);
btrfs_set_trans_block_group(trans, inode);
trans->block_rsv = &root->fs_info->delalloc_block_rsv;
- actual_end = min_t(u64, isize, end + 1);
-
num_bytes = (end - start + blocksize) & ~(blocksize - 1);
num_bytes = max(blocksize, num_bytes);
disk_num_bytes = num_bytes;
int type;
int nocow;
int check_prev = 1;
+ bool nolock = false;
path = btrfs_alloc_path();
BUG_ON(!path);
- trans = btrfs_join_transaction(root, 1);
+ if (root == root->fs_info->tree_root) {
+ nolock = true;
+ trans = btrfs_join_transaction_nolock(root, 1);
+ } else {
+ trans = btrfs_join_transaction(root, 1);
+ }
BUG_ON(!trans);
cow_start = (u64)-1;
BUG_ON(ret);
}
- ret = btrfs_end_transaction(trans, root);
- BUG_ON(ret);
+ if (nolock) {
+ ret = btrfs_end_transaction_nolock(trans, root);
+ BUG_ON(ret);
+ } else {
+ ret = btrfs_end_transaction(trans, root);
+ BUG_ON(ret);
+ }
btrfs_free_path(path);
return 0;
}
if (!(state->state & EXTENT_DELALLOC) && (*bits & EXTENT_DELALLOC)) {
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 len = state->end + 1 - state->start;
+ int do_list = (root->root_key.objectid !=
+ BTRFS_ROOT_TREE_OBJECTID);
if (*bits & EXTENT_FIRST_DELALLOC)
*bits &= ~EXTENT_FIRST_DELALLOC;
spin_lock(&root->fs_info->delalloc_lock);
BTRFS_I(inode)->delalloc_bytes += len;
root->fs_info->delalloc_bytes += len;
- if (list_empty(&BTRFS_I(inode)->delalloc_inodes)) {
+ if (do_list && list_empty(&BTRFS_I(inode)->delalloc_inodes)) {
list_add_tail(&BTRFS_I(inode)->delalloc_inodes,
&root->fs_info->delalloc_inodes);
}
if ((state->state & EXTENT_DELALLOC) && (*bits & EXTENT_DELALLOC)) {
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 len = state->end + 1 - state->start;
+ int do_list = (root->root_key.objectid !=
+ BTRFS_ROOT_TREE_OBJECTID);
if (*bits & EXTENT_FIRST_DELALLOC)
*bits &= ~EXTENT_FIRST_DELALLOC;
if (*bits & EXTENT_DO_ACCOUNTING)
btrfs_delalloc_release_metadata(inode, len);
- if (root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID)
+ if (root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID
+ && do_list)
btrfs_free_reserved_data_space(inode, len);
spin_lock(&root->fs_info->delalloc_lock);
root->fs_info->delalloc_bytes -= len;
BTRFS_I(inode)->delalloc_bytes -= len;
- if (BTRFS_I(inode)->delalloc_bytes == 0 &&
+ if (do_list && BTRFS_I(inode)->delalloc_bytes == 0 &&
!list_empty(&BTRFS_I(inode)->delalloc_inodes)) {
list_del_init(&BTRFS_I(inode)->delalloc_inodes);
}
if (map_length < length + size)
return 1;
- return 0;
+ return ret;
}
/*
skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM;
- ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
+ if (root == root->fs_info->tree_root)
+ ret = btrfs_bio_wq_end_io(root->fs_info, bio, 2);
+ else
+ ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
BUG_ON(ret);
if (!(rw & REQ_WRITE)) {
struct extent_state *cached_state = NULL;
int compressed = 0;
int ret;
+ bool nolock = false;
ret = btrfs_dec_test_ordered_pending(inode, &ordered_extent, start,
end - start + 1);
return 0;
BUG_ON(!ordered_extent);
+ nolock = (root == root->fs_info->tree_root);
+
if (test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags)) {
BUG_ON(!list_empty(&ordered_extent->list));
ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent);
if (!ret) {
- trans = btrfs_join_transaction(root, 1);
+ if (nolock)
+ trans = btrfs_join_transaction_nolock(root, 1);
+ else
+ trans = btrfs_join_transaction(root, 1);
+ BUG_ON(!trans);
btrfs_set_trans_block_group(trans, inode);
trans->block_rsv = &root->fs_info->delalloc_block_rsv;
ret = btrfs_update_inode(trans, root, inode);
ordered_extent->file_offset + ordered_extent->len - 1,
0, &cached_state, GFP_NOFS);
- trans = btrfs_join_transaction(root, 1);
+ if (nolock)
+ trans = btrfs_join_transaction_nolock(root, 1);
+ else
+ trans = btrfs_join_transaction(root, 1);
btrfs_set_trans_block_group(trans, inode);
trans->block_rsv = &root->fs_info->delalloc_block_rsv;
ret = btrfs_update_inode(trans, root, inode);
BUG_ON(ret);
out:
- btrfs_delalloc_release_metadata(inode, ordered_extent->len);
- if (trans)
- btrfs_end_transaction(trans, root);
+ if (nolock) {
+ if (trans)
+ btrfs_end_transaction_nolock(trans, root);
+ } else {
+ btrfs_delalloc_release_metadata(inode, ordered_extent->len);
+ if (trans)
+ btrfs_end_transaction(trans, root);
+ }
+
/* once for us */
btrfs_put_ordered_extent(ordered_extent);
/* once for the tree */
{
struct btrfs_path *path;
struct extent_buffer *leaf;
- struct btrfs_item *item;
struct btrfs_key key, found_key;
struct btrfs_trans_handle *trans;
struct inode *inode;
/* pull out the item */
leaf = path->nodes[0];
- item = btrfs_item_nr(leaf, path->slots[0]);
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
/* make sure the item matches what we want */
ret = btrfs_del_dir_entries_in_log(trans, root, name, name_len,
dir, index);
- BUG_ON(ret);
+ if (ret == -ENOENT)
+ ret = 0;
err:
btrfs_free_path(path);
if (ret)
{
struct extent_buffer *eb;
int level;
- int ret;
u64 refs = 1;
+ int uninitialized_var(ret);
for (level = 0; level < BTRFS_MAX_LEVEL; level++) {
if (!path->nodes[level])
if (refs > 1)
return 1;
}
- return 0;
+ return ret; /* XXX callers? */
}
/*
p = &root->inode_tree.rb_node;
parent = NULL;
- if (hlist_unhashed(&inode->i_hash))
+ if (inode_unhashed(inode))
return;
spin_lock(&root->inode_lock);
}
btrfs_set_trans_block_group(trans, dir);
- atomic_inc(&inode->i_count);
+ ihold(inode);
err = btrfs_add_nondir(trans, dentry, inode, 1, index);
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_dio_private *dip;
struct bio_vec *bvec = bio->bi_io_vec;
- u64 start;
int skip_sum;
int write = rw & REQ_WRITE;
int ret = 0;
dip->inode = inode;
dip->logical_offset = file_offset;
- start = dip->logical_offset;
dip->bytes = 0;
do {
dip->bytes += bvec->bv_len;
return 0;
}
-int btrfs_start_one_delalloc_inode(struct btrfs_root *root, int delay_iput)
+int btrfs_start_one_delalloc_inode(struct btrfs_root *root, int delay_iput,
+ int sync)
{
struct btrfs_inode *binode;
struct inode *inode = NULL;
spin_unlock(&root->fs_info->delalloc_lock);
if (inode) {
- write_inode_now(inode, 0);
+ if (sync) {
+ filemap_write_and_wait(inode->i_mapping);
+ /*
+ * We have to do this because compression doesn't
+ * actually set PG_writeback until it submits the pages
+ * for IO, which happens in an async thread, so we could
+ * race and not actually wait for any writeback pages
+ * because they've not been submitted yet. Technically
+ * this could still be the case for the ordered stuff
+ * since the async thread may not have started to do its
+ * work yet. If this becomes the case then we need to
+ * figure out a way to make sure that in writepage we
+ * wait for any async pages to be submitted before
+ * returning so that fdatawait does what its supposed to
+ * do.
+ */
+ btrfs_wait_ordered_range(inode, 0, (u64)-1);
+ } else {
+ filemap_flush(inode->i_mapping);
+ }
if (delay_iput)
btrfs_add_delayed_iput(inode);
else
git.openpandora.org / pandora-kernel.git / blobdiff