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Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

Browse Source 
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: add check for changed leaves in setup_leaf_for_split
  Btrfs: create snapshot references in same commit as snapshot
  Btrfs: fix small race with delalloc flushing waitqueue's
  Btrfs: use add_to_page_cache_lru, use __page_cache_alloc
  Btrfs: fix chunk allocate size calculation
  Btrfs: kill max_extent mount option
  Btrfs: fail to mount if we have problems reading the block groups
  Btrfs: check btrfs_get_extent return for IS_ERR()
  Btrfs: handle kmalloc() failure in inode lookup ioctl
  Btrfs: dereferencing freed memory
  Btrfs: Simplify num_stripes's calculation logical for __btrfs_alloc_chunk()
  Btrfs: Add error handle for btrfs_search_slot() in btrfs_read_chunk_tree()
  Btrfs: Remove unnecessary finish_wait() in wait_current_trans()
  Btrfs: add NULL check for do_walk_down()
  Btrfs: remove duplicate include in ioctl.c

Fix trivial conflict in fs/btrfs/compression.c due to slab.h include
cleanups.
This commit is contained in:
Linus Torvalds 2010-04-05 13:21:15 -07:00
commit 795d580bae
12 changed files with 92 additions and 206 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
fs/btrfs/compression.c
View File

@ -31,7 +31,6 @@
#include <linux/swap.h>
#include <linux/writeback.h>
#include <linux/bit_spinlock.h>
#include <linux/pagevec.h>
#include <linux/slab.h>
#include "compat.h"
#include "ctree.h"
@ -446,7 +445,6 @@ static noinline int add_ra_bio_pages(struct inode *inode,
unsigned long nr_pages = 0;
struct extent_map *em;
struct address_space *mapping = inode->i_mapping;
struct pagevec pvec;
struct extent_map_tree *em_tree;
struct extent_io_tree *tree;
u64 end;
@ -462,7 +460,6 @@ static noinline int add_ra_bio_pages(struct inode *inode,
end_index = (i_size_read(inode) - 1) >> PAGE_CACHE_SHIFT;
pagevec_init(&pvec, 0);
while (last_offset < compressed_end) {
page_index = last_offset >> PAGE_CACHE_SHIFT;
@ -479,26 +476,17 @@ static noinline int add_ra_bio_pages(struct inode *inode,
goto next;
}
page = alloc_page(mapping_gfp_mask(mapping) & ~__GFP_FS);
page = __page_cache_alloc(mapping_gfp_mask(mapping) &
~__GFP_FS);
if (!page)
break;
page->index = page_index;
/*
* what we want to do here is call add_to_page_cache_lru,
* but that isn't exported, so we reproduce it here
*/
if (add_to_page_cache(page, mapping,
page->index, GFP_NOFS)) {
if (add_to_page_cache_lru(page, mapping, page_index,
GFP_NOFS)) {
page_cache_release(page);
goto next;
}
/* open coding of lru_cache_add, also not exported */
page_cache_get(page);
if (!pagevec_add(&pvec, page))
__pagevec_lru_add_file(&pvec);
end = last_offset + PAGE_CACHE_SIZE - 1;
/*
* at this point, we have a locked page in the page cache
@ -552,8 +540,6 @@ static noinline int add_ra_bio_pages(struct inode *inode,
next:
last_offset += PAGE_CACHE_SIZE;
}
if (pagevec_count(&pvec))
__pagevec_lru_add_file(&pvec);
return 0;
}

4
fs/btrfs/ctree.c
View File

@ -3041,6 +3041,10 @@ static noinline int setup_leaf_for_split(struct btrfs_trans_handle *trans,
if (ret > 0 || item_size != btrfs_item_size_nr(leaf, path->slots[0]))
goto err;
/* the leaf has changed, it now has room. return now */
if (btrfs_leaf_free_space(root, path->nodes[0]) >= ins_len)
goto err;
if (key.type == BTRFS_EXTENT_DATA_KEY) {
fi = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_file_extent_item);

1
fs/btrfs/ctree.h
View File

@ -835,7 +835,6 @@ struct btrfs_fs_info {
u64 last_trans_log_full_commit;
u64 open_ioctl_trans;
unsigned long mount_opt;
u64 max_extent;
u64 max_inline;
u64 alloc_start;
struct btrfs_transaction *running_transaction;

12
fs/btrfs/disk-io.c
View File

@ -1635,7 +1635,6 @@ struct btrfs_root *open_ctree(struct super_block *sb,
atomic_set(&fs_info->async_submit_draining, 0);
atomic_set(&fs_info->nr_async_bios, 0);
fs_info->sb = sb;
fs_info->max_extent = (u64)-1;
fs_info->max_inline = 8192 * 1024;
fs_info->metadata_ratio = 0;
@ -1923,7 +1922,11 @@ struct btrfs_root *open_ctree(struct super_block *sb,
csum_root->track_dirty = 1;
btrfs_read_block_groups(extent_root);
ret = btrfs_read_block_groups(extent_root);
if (ret) {
printk(KERN_ERR "Failed to read block groups: %d\n", ret);
goto fail_block_groups;
}
fs_info->generation = generation;
fs_info->last_trans_committed = generation;
@ -1933,7 +1936,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
fs_info->cleaner_kthread = kthread_run(cleaner_kthread, tree_root,
"btrfs-cleaner");
if (IS_ERR(fs_info->cleaner_kthread))
goto fail_csum_root;
goto fail_block_groups;
fs_info->transaction_kthread = kthread_run(transaction_kthread,
tree_root,
@ -2021,7 +2024,8 @@ fail_cleaner:
filemap_write_and_wait(fs_info->btree_inode->i_mapping);
invalidate_inode_pages2(fs_info->btree_inode->i_mapping);
fail_csum_root:
fail_block_groups:
btrfs_free_block_groups(fs_info);
free_extent_buffer(csum_root->node);
free_extent_buffer(csum_root->commit_root);
fail_dev_root:

23
fs/btrfs/extent-tree.c
View File

@ -2677,6 +2677,8 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
INIT_LIST_HEAD(&found->block_groups);
init_rwsem(&found->groups_sem);
init_waitqueue_head(&found->flush_wait);
init_waitqueue_head(&found->allocate_wait);
spin_lock_init(&found->lock);
found->flags = flags;
found->total_bytes = total_bytes;
@ -2847,7 +2849,7 @@ int btrfs_unreserve_metadata_for_delalloc(struct btrfs_root *root,
}
spin_unlock(&BTRFS_I(inode)->accounting_lock);
BTRFS_I(inode)->reserved_extents--;
BTRFS_I(inode)->reserved_extents -= num_items;
BUG_ON(BTRFS_I(inode)->reserved_extents < 0);
if (meta_sinfo->bytes_delalloc < num_bytes) {
@ -2945,12 +2947,10 @@ static void flush_delalloc(struct btrfs_root *root,
spin_lock(&info->lock);
if (!info->flushing) {
if (!info->flushing)
info->flushing = 1;
init_waitqueue_head(&info->flush_wait);
} else {
else
wait = true;
}
spin_unlock(&info->lock);
@ -3012,7 +3012,6 @@ static int maybe_allocate_chunk(struct btrfs_root *root,
if (!info->allocating_chunk) {
info->force_alloc = 1;
info->allocating_chunk = 1;
init_waitqueue_head(&info->allocate_wait);
} else {
wait = true;
}
@ -3112,7 +3111,7 @@ again:
return -ENOSPC;
}
BTRFS_I(inode)->reserved_extents++;
BTRFS_I(inode)->reserved_extents += num_items;
check_force_delalloc(meta_sinfo);
spin_unlock(&meta_sinfo->lock);
@ -4171,6 +4170,10 @@ static noinline int find_free_extent(struct btrfs_trans_handle *trans,
ins->offset = 0;
space_info = __find_space_info(root->fs_info, data);
if (!space_info) {
printk(KERN_ERR "No space info for %d\n", data);
return -ENOSPC;
}
if (orig_root->ref_cows || empty_size)
allowed_chunk_alloc = 1;
@ -5206,6 +5209,8 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
next = btrfs_find_tree_block(root, bytenr, blocksize);
if (!next) {
next = btrfs_find_create_tree_block(root, bytenr, blocksize);
if (!next)
return -ENOMEM;
reada = 1;
}
btrfs_tree_lock(next);
@ -5418,7 +5423,8 @@ static noinline int walk_down_tree(struct btrfs_trans_handle *trans,
if (ret > 0) {
path->slots[level]++;
continue;
}
} else if (ret < 0)
return ret;
level = wc->level;
}
return 0;
@ -7370,7 +7376,6 @@ static int find_first_block_group(struct btrfs_root *root,
}
path->slots[0]++;
}
ret = -ENOENT;
out:
return ret;
}

15
fs/btrfs/extent_io.c
View File

@ -2678,33 +2678,20 @@ int extent_readpages(struct extent_io_tree *tree,
{
struct bio *bio = NULL;
unsigned page_idx;
struct pagevec pvec;
unsigned long bio_flags = 0;
pagevec_init(&pvec, 0);
for (page_idx = 0; page_idx < nr_pages; page_idx++) {
struct page *page = list_entry(pages->prev, struct page, lru);
prefetchw(&page->flags);
list_del(&page->lru);
/*
* what we want to do here is call add_to_page_cache_lru,
* but that isn't exported, so we reproduce it here
*/
if (!add_to_page_cache(page, mapping,
if (!add_to_page_cache_lru(page, mapping,
page->index, GFP_KERNEL)) {
/* open coding of lru_cache_add, also not exported */
page_cache_get(page);
if (!pagevec_add(&pvec, page))
__pagevec_lru_add_file(&pvec);
__extent_read_full_page(tree, page, get_extent,
&bio, 0, &bio_flags);
}
page_cache_release(page);
}
if (pagevec_count(&pvec))
__pagevec_lru_add_file(&pvec);
BUG_ON(!list_empty(pages));
if (bio)
submit_one_bio(READ, bio, 0, bio_flags);

59
fs/btrfs/inode.c
View File

@ -797,7 +797,7 @@ static noinline int cow_file_range(struct inode *inode,
while (disk_num_bytes > 0) {
unsigned long op;
cur_alloc_size = min(disk_num_bytes, root->fs_info->max_extent);
cur_alloc_size = disk_num_bytes;
ret = btrfs_reserve_extent(trans, root, cur_alloc_size,
root->sectorsize, 0, alloc_hint,
(u64)-1, &ins, 1);
@ -1228,30 +1228,9 @@ static int run_delalloc_range(struct inode *inode, struct page *locked_page,
static int btrfs_split_extent_hook(struct inode *inode,
struct extent_state *orig, u64 split)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 size;
if (!(orig->state & EXTENT_DELALLOC))
return 0;
size = orig->end - orig->start + 1;
if (size > root->fs_info->max_extent) {
u64 num_extents;
u64 new_size;
new_size = orig->end - split + 1;
num_extents = div64_u64(size + root->fs_info->max_extent - 1,
root->fs_info->max_extent);
/*
* if we break a large extent up then leave oustanding_extents
* be, since we've already accounted for the large extent.
*/
if (div64_u64(new_size + root->fs_info->max_extent - 1,
root->fs_info->max_extent) < num_extents)
return 0;
}
spin_lock(&BTRFS_I(inode)->accounting_lock);
BTRFS_I(inode)->outstanding_extents++;
spin_unlock(&BTRFS_I(inode)->accounting_lock);
@ -1269,38 +1248,10 @@ static int btrfs_merge_extent_hook(struct inode *inode,
struct extent_state *new,
struct extent_state *other)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 new_size, old_size;
u64 num_extents;
/* not delalloc, ignore it */
if (!(other->state & EXTENT_DELALLOC))
return 0;
old_size = other->end - other->start + 1;
if (new->start < other->start)
new_size = other->end - new->start + 1;
else
new_size = new->end - other->start + 1;
/* we're not bigger than the max, unreserve the space and go */
if (new_size <= root->fs_info->max_extent) {
spin_lock(&BTRFS_I(inode)->accounting_lock);
BTRFS_I(inode)->outstanding_extents--;
spin_unlock(&BTRFS_I(inode)->accounting_lock);
return 0;
}
/*
* If we grew by another max_extent, just return, we want to keep that
* reserved amount.
*/
num_extents = div64_u64(old_size + root->fs_info->max_extent - 1,
root->fs_info->max_extent);
if (div64_u64(new_size + root->fs_info->max_extent - 1,
root->fs_info->max_extent) > num_extents)
return 0;
spin_lock(&BTRFS_I(inode)->accounting_lock);
BTRFS_I(inode)->outstanding_extents--;
spin_unlock(&BTRFS_I(inode)->accounting_lock);
@ -1329,6 +1280,7 @@ static int btrfs_set_bit_hook(struct inode *inode, u64 start, u64 end,
BTRFS_I(inode)->outstanding_extents++;
spin_unlock(&BTRFS_I(inode)->accounting_lock);
btrfs_delalloc_reserve_space(root, inode, end - start + 1);
spin_lock(&root->fs_info->delalloc_lock);
BTRFS_I(inode)->delalloc_bytes += end - start + 1;
root->fs_info->delalloc_bytes += end - start + 1;
@ -1357,6 +1309,7 @@ static int btrfs_clear_bit_hook(struct inode *inode,
if (bits & EXTENT_DO_ACCOUNTING) {
spin_lock(&BTRFS_I(inode)->accounting_lock);
WARN_ON(!BTRFS_I(inode)->outstanding_extents);
BTRFS_I(inode)->outstanding_extents--;
spin_unlock(&BTRFS_I(inode)->accounting_lock);
btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
@ -5385,7 +5338,6 @@ free:
void btrfs_drop_inode(struct inode *inode)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
if (inode->i_nlink > 0 && btrfs_root_refs(&root->root_item) == 0)
generic_delete_inode(inode);
else
@ -5789,18 +5741,15 @@ static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
struct btrfs_trans_handle *trans;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_key ins;
u64 alloc_size;
u64 cur_offset = start;
u64 num_bytes = end - start;
int ret = 0;
u64 i_size;
while (num_bytes > 0) {
alloc_size = min(num_bytes, root->fs_info->max_extent);
trans = btrfs_start_transaction(root, 1);
ret = btrfs_reserve_extent(trans, root, alloc_size,
ret = btrfs_reserve_extent(trans, root, num_bytes,
root->sectorsize, 0, alloc_hint,
(u64)-1, &ins, 1);
if (ret) {

7
fs/btrfs/ioctl.c
View File

@ -49,7 +49,6 @@
#include "print-tree.h"
#include "volumes.h"
#include "locking.h"
#include "ctree.h"
/* Mask out flags that are inappropriate for the given type of inode. */
static inline __u32 btrfs_mask_flags(umode_t mode, __u32 flags)
@ -512,7 +511,7 @@ static int should_defrag_range(struct inode *inode, u64 start, u64 len,
em = btrfs_get_extent(inode, NULL, 0, start, len, 0);
unlock_extent(io_tree, start, start + len - 1, GFP_NOFS);
if (!em)
if (IS_ERR(em))
return 0;
}
@ -1213,6 +1212,9 @@ static noinline int btrfs_ioctl_ino_lookup(struct file *file,
return -EPERM;
args = kmalloc(sizeof(*args), GFP_KERNEL);
if (!args)
return -ENOMEM;
if (copy_from_user(args, argp, sizeof(*args))) {
kfree(args);
return -EFAULT;
@ -1376,6 +1378,7 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
sizeof(*range))) {
ret = -EFAULT;
kfree(range);
goto out;
}
/* compression requires us to start the IO */
if ((range->flags & BTRFS_DEFRAG_RANGE_COMPRESS)) {

6
fs/btrfs/ordered-data.c
View File

@ -302,6 +302,7 @@ static int __btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
{
struct btrfs_ordered_inode_tree *tree;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct rb_node *node;
tree = &BTRFS_I(inode)->ordered_tree;
@ -311,12 +312,13 @@ static int __btrfs_remove_ordered_extent(struct inode *inode,
set_bit(BTRFS_ORDERED_COMPLETE, &entry->flags);
spin_lock(&BTRFS_I(inode)->accounting_lock);
WARN_ON(!BTRFS_I(inode)->outstanding_extents);
BTRFS_I(inode)->outstanding_extents--;
spin_unlock(&BTRFS_I(inode)->accounting_lock);
btrfs_unreserve_metadata_for_delalloc(BTRFS_I(inode)->root,
inode, 1);
spin_lock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock);
spin_lock(&root->fs_info->ordered_extent_lock);
list_del_init(&entry->root_extent_list);
/*
@ -328,7 +330,7 @@ static int __btrfs_remove_ordered_extent(struct inode *inode,
!mapping_tagged(inode->i_mapping, PAGECACHE_TAG_DIRTY)) {
list_del_init(&BTRFS_I(inode)->ordered_operations);
}
spin_unlock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock);
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}

23
fs/btrfs/super.c
View File

@ -65,10 +65,9 @@ static void btrfs_put_super(struct super_block *sb)
enum {
Opt_degraded, Opt_subvol, Opt_subvolid, Opt_device, Opt_nodatasum,
Opt_nodatacow, Opt_max_extent, Opt_max_inline, Opt_alloc_start,
Opt_nobarrier, Opt_ssd, Opt_nossd, Opt_ssd_spread, Opt_thread_pool,
Opt_noacl, Opt_compress, Opt_compress_force, Opt_notreelog, Opt_ratio,
Opt_flushoncommit,
Opt_nodatacow, Opt_max_inline, Opt_alloc_start, Opt_nobarrier, Opt_ssd,
Opt_nossd, Opt_ssd_spread, Opt_thread_pool, Opt_noacl, Opt_compress,
Opt_compress_force, Opt_notreelog, Opt_ratio, Opt_flushoncommit,
Opt_discard, Opt_err,
};
@ -80,7 +79,6 @@ static match_table_t tokens = {
{Opt_nodatasum, "nodatasum"},
{Opt_nodatacow, "nodatacow"},
{Opt_nobarrier, "nobarrier"},
{Opt_max_extent, "max_extent=%s"},
{Opt_max_inline, "max_inline=%s"},
{Opt_alloc_start, "alloc_start=%s"},
{Opt_thread_pool, "thread_pool=%d"},
@ -189,18 +187,6 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
info->thread_pool_size);
}
break;
case Opt_max_extent:
num = match_strdup(&args[0]);
if (num) {
info->max_extent = memparse(num, NULL);
kfree(num);
info->max_extent = max_t(u64,
info->max_extent, root->sectorsize);
printk(KERN_INFO "btrfs: max_extent at %llu\n",
(unsigned long long)info->max_extent);
}
break;
case Opt_max_inline:
num = match_strdup(&args[0]);
if (num) {
@ -530,9 +516,6 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_puts(seq, ",nodatacow");
if (btrfs_test_opt(root, NOBARRIER))
seq_puts(seq, ",nobarrier");
if (info->max_extent != (u64)-1)
seq_printf(seq, ",max_extent=%llu",
(unsigned long long)info->max_extent);
if (info->max_inline != 8192 * 1024)
seq_printf(seq, ",max_inline=%llu",
(unsigned long long)info->max_inline);

112
fs/btrfs/transaction.c
View File

@ -148,18 +148,13 @@ static void wait_current_trans(struct btrfs_root *root)
while (1) {
prepare_to_wait(&root->fs_info->transaction_wait, &wait,
TASK_UNINTERRUPTIBLE);
if (cur_trans->blocked) {
if (!cur_trans->blocked)
break;
mutex_unlock(&root->fs_info->trans_mutex);
schedule();
mutex_lock(&root->fs_info->trans_mutex);
finish_wait(&root->fs_info->transaction_wait,
&wait);
} else {
finish_wait(&root->fs_info->transaction_wait,
&wait);
break;
}
}
finish_wait(&root->fs_info->transaction_wait, &wait);
put_transaction(cur_trans);
}
}
@ -761,10 +756,17 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
struct btrfs_root_item *new_root_item;
struct btrfs_root *tree_root = fs_info->tree_root;
struct btrfs_root *root = pending->root;
struct btrfs_root *parent_root;
struct inode *parent_inode;
struct extent_buffer *tmp;
struct extent_buffer *old;
int ret;
u64 objectid;
int namelen;
u64 index = 0;
parent_inode = pending->dentry->d_parent->d_inode;
parent_root = BTRFS_I(parent_inode)->root;
new_root_item = kmalloc(sizeof(*new_root_item), GFP_NOFS);
if (!new_root_item) {
@ -775,15 +777,35 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
if (ret)
goto fail;
record_root_in_trans(trans, root);
btrfs_set_root_last_snapshot(&root->root_item, trans->transid);
memcpy(new_root_item, &root->root_item, sizeof(*new_root_item));
key.objectid = objectid;
/* record when the snapshot was created in key.offset */
key.offset = trans->transid;
btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
memcpy(&pending->root_key, &key, sizeof(key));
pending->root_key.offset = (u64)-1;
record_root_in_trans(trans, parent_root);
/*
* insert the directory item
*/
namelen = strlen(pending->name);
ret = btrfs_set_inode_index(parent_inode, &index);
BUG_ON(ret);
ret = btrfs_insert_dir_item(trans, parent_root,
pending->name, namelen,
parent_inode->i_ino,
&pending->root_key, BTRFS_FT_DIR, index);
BUG_ON(ret);
btrfs_i_size_write(parent_inode, parent_inode->i_size + namelen * 2);
ret = btrfs_update_inode(trans, parent_root, parent_inode);
BUG_ON(ret);
record_root_in_trans(trans, root);
btrfs_set_root_last_snapshot(&root->root_item, trans->transid);
memcpy(new_root_item, &root->root_item, sizeof(*new_root_item));
old = btrfs_lock_root_node(root);
btrfs_cow_block(trans, root, old, NULL, 0, &old);
btrfs_set_lock_blocking(old);
@ -795,59 +817,19 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
btrfs_set_root_node(new_root_item, tmp);
ret = btrfs_insert_root(trans, root->fs_info->tree_root, &key,
new_root_item);
BUG_ON(ret);
btrfs_tree_unlock(tmp);
free_extent_buffer(tmp);
if (ret)
goto fail;
key.offset = (u64)-1;
memcpy(&pending->root_key, &key, sizeof(key));
fail:
kfree(new_root_item);
return ret;
}
static noinline int finish_pending_snapshot(struct btrfs_fs_info *fs_info,
struct btrfs_pending_snapshot *pending)
{
int ret;
int namelen;
u64 index = 0;
struct btrfs_trans_handle *trans;
struct inode *parent_inode;
struct btrfs_root *parent_root;
parent_inode = pending->dentry->d_parent->d_inode;
parent_root = BTRFS_I(parent_inode)->root;
trans = btrfs_join_transaction(parent_root, 1);
/*
* insert the directory item
*/
namelen = strlen(pending->name);
ret = btrfs_set_inode_index(parent_inode, &index);
ret = btrfs_insert_dir_item(trans, parent_root,
pending->name, namelen,
parent_inode->i_ino,
&pending->root_key, BTRFS_FT_DIR, index);
if (ret)
goto fail;
btrfs_i_size_write(parent_inode, parent_inode->i_size + namelen * 2);
ret = btrfs_update_inode(trans, parent_root, parent_inode);
BUG_ON(ret);
ret = btrfs_add_root_ref(trans, parent_root->fs_info->tree_root,
pending->root_key.objectid,
parent_root->root_key.objectid,
parent_inode->i_ino, index, pending->name,
namelen);
BUG_ON(ret);
fail:
btrfs_end_transaction(trans, fs_info->fs_root);
kfree(new_root_item);
return ret;
}
@ -868,25 +850,6 @@ static noinline int create_pending_snapshots(struct btrfs_trans_handle *trans,
return 0;
}
static noinline int finish_pending_snapshots(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info)
{
struct btrfs_pending_snapshot *pending;
struct list_head *head = &trans->transaction->pending_snapshots;
int ret;
while (!list_empty(head)) {
pending = list_entry(head->next,
struct btrfs_pending_snapshot, list);
ret = finish_pending_snapshot(fs_info, pending);
BUG_ON(ret);
list_del(&pending->list);
kfree(pending->name);
kfree(pending);
}
return 0;
}
static void update_super_roots(struct btrfs_root *root)
{
struct btrfs_root_item *root_item;
@ -1098,9 +1061,6 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
btrfs_finish_extent_commit(trans, root);
/* do the directory inserts of any pending snapshot creations */
finish_pending_snapshots(trans, root->fs_info);
mutex_lock(&root->fs_info->trans_mutex);
cur_trans->commit_done = 1;

8
fs/btrfs/volumes.c
View File

@ -2199,9 +2199,9 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
min_stripes = 2;
}
if (type & (BTRFS_BLOCK_GROUP_RAID1)) {
num_stripes = min_t(u64, 2, fs_devices->rw_devices);
if (num_stripes < 2)
if (fs_devices->rw_devices < 2)
return -ENOSPC;
num_stripes = 2;
min_stripes = 2;
}
if (type & (BTRFS_BLOCK_GROUP_RAID10)) {
@ -2245,7 +2245,9 @@ again:
do_div(calc_size, stripe_len);
calc_size *= stripe_len;
}
/* we don't want tiny stripes */
if (!looped)
calc_size = max_t(u64, min_stripe_size, calc_size);
do_div(calc_size, stripe_len);
@ -3390,6 +3392,8 @@ int btrfs_read_chunk_tree(struct btrfs_root *root)
key.type = 0;
again:
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
if (ret < 0)
goto error;
while (1) {
leaf = path->nodes[0];
slot = path->slots[0];