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-rw-r--r--fs/btrfs/disk-io.c33
-rw-r--r--fs/btrfs/disk-io.h1
-rw-r--r--fs/btrfs/extent-tree.c20
-rw-r--r--fs/btrfs/extent_io.c47
-rw-r--r--fs/btrfs/extent_io.h1
-rw-r--r--fs/btrfs/transaction.c16
-rw-r--r--fs/btrfs/tree-log.c13
7 files changed, 107 insertions, 24 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index a4373db..42bf991 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -307,9 +307,7 @@ int csum_dirty_buffer(struct btrfs_root *root, struct page *page)
goto err;
}
found_level = btrfs_header_level(eb);
- spin_lock(&root->fs_info->hash_lock);
- btrfs_set_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN);
- spin_unlock(&root->fs_info->hash_lock);
+
csum_tree_block(root, eb, 0);
err:
free_extent_buffer(eb);
@@ -1998,7 +1996,36 @@ int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid)
return ret;
}
+int btree_lock_page_hook(struct page *page)
+{
+ struct inode *inode = page->mapping->host;
+ struct btrfs_root *root = BTRFS_I(inode)->root;
+ struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
+ struct extent_buffer *eb;
+ unsigned long len;
+ u64 bytenr = page_offset(page);
+
+ if (page->private == EXTENT_PAGE_PRIVATE)
+ goto out;
+
+ len = page->private >> 2;
+ eb = find_extent_buffer(io_tree, bytenr, len, GFP_NOFS);
+ if (!eb)
+ goto out;
+
+ btrfs_tree_lock(eb);
+ spin_lock(&root->fs_info->hash_lock);
+ btrfs_set_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN);
+ spin_unlock(&root->fs_info->hash_lock);
+ btrfs_tree_unlock(eb);
+ free_extent_buffer(eb);
+out:
+ lock_page(page);
+ return 0;
+}
+
static struct extent_io_ops btree_extent_io_ops = {
+ .write_cache_pages_lock_hook = btree_lock_page_hook,
.writepage_io_hook = btree_writepage_io_hook,
.readpage_end_io_hook = btree_readpage_end_io_hook,
.submit_bio_hook = btree_submit_bio_hook,
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 6b6fdc6..f84f505 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -80,4 +80,5 @@ int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
+int btree_lock_page_hook(struct page *page);
#endif
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 646b914..3181759 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1590,13 +1590,17 @@ static int finish_current_insert(struct btrfs_trans_handle *trans,
}
static int pin_down_bytes(struct btrfs_root *root, u64 bytenr, u32 num_bytes,
- int pending)
+ int is_data, int pending)
{
int err = 0;
WARN_ON(!mutex_is_locked(&root->fs_info->alloc_mutex));
if (!pending) {
struct extent_buffer *buf;
+
+ if (is_data)
+ goto pinit;
+
buf = btrfs_find_tree_block(root, bytenr, num_bytes);
if (buf) {
/* we can reuse a block if it hasn't been written
@@ -1624,6 +1628,7 @@ static int pin_down_bytes(struct btrfs_root *root, u64 bytenr, u32 num_bytes,
}
free_extent_buffer(buf);
}
+pinit:
btrfs_update_pinned_extents(root, bytenr, num_bytes, 1);
} else {
set_extent_bits(&root->fs_info->pending_del,
@@ -1744,7 +1749,8 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
#endif
if (pin) {
- ret = pin_down_bytes(root, bytenr, num_bytes, 0);
+ ret = pin_down_bytes(root, bytenr, num_bytes,
+ owner_objectid >= BTRFS_FIRST_FREE_OBJECTID, 0);
if (ret > 0)
mark_free = 1;
BUG_ON(ret < 0);
@@ -1862,9 +1868,17 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
ref_generation = 0;
if (root == extent_root) {
- pin_down_bytes(root, bytenr, num_bytes, 1);
+ pin_down_bytes(root, bytenr, num_bytes, 0, 1);
return 0;
}
+ /* if metadata always pin */
+ if (owner_objectid < BTRFS_FIRST_FREE_OBJECTID)
+ pin = 1;
+
+ /* if data pin when any transaction has committed this */
+ if (ref_generation != trans->transid)
+ pin = 1;
+
ret = __free_extent(trans, root, bytenr, num_bytes, root_objectid,
ref_generation, owner_objectid, owner_offset,
pin, pin == 0);
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 239e7c9..319a0c7 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -29,7 +29,10 @@ static struct kmem_cache *extent_buffer_cache;
static LIST_HEAD(buffers);
static LIST_HEAD(states);
+
+#ifdef LEAK_DEBUG
static spinlock_t leak_lock = SPIN_LOCK_UNLOCKED;
+#endif
#define BUFFER_LRU_MAX 64
@@ -106,7 +109,9 @@ EXPORT_SYMBOL(extent_io_tree_init);
struct extent_state *alloc_extent_state(gfp_t mask)
{
struct extent_state *state;
+#ifdef LEAK_DEBUG
unsigned long flags;
+#endif
state = kmem_cache_alloc(extent_state_cache, mask);
if (!state)
@@ -114,10 +119,11 @@ struct extent_state *alloc_extent_state(gfp_t mask)
state->state = 0;
state->private = 0;
state->tree = NULL;
+#ifdef LEAK_DEBUG
spin_lock_irqsave(&leak_lock, flags);
list_add(&state->leak_list, &states);
spin_unlock_irqrestore(&leak_lock, flags);
-
+#endif
atomic_set(&state->refs, 1);
init_waitqueue_head(&state->wq);
return state;
@@ -129,11 +135,15 @@ void free_extent_state(struct extent_state *state)
if (!state)
return;
if (atomic_dec_and_test(&state->refs)) {
+#ifdef LEAK_DEBUG
unsigned long flags;
+#endif
WARN_ON(state->tree);
+#ifdef LEAK_DEBUG
spin_lock_irqsave(&leak_lock, flags);
list_del(&state->leak_list);
spin_unlock_irqrestore(&leak_lock, flags);
+#endif
kmem_cache_free(extent_state_cache, state);
}
}
@@ -2070,13 +2080,13 @@ done:
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
-/* Taken directly from 2.6.23 for 2.6.18 back port */
+/* Taken directly from 2.6.23 with a mod for a lockpage hook */
typedef int (*writepage_t)(struct page *page, struct writeback_control *wbc,
void *data);
+#endif
/**
- * write_cache_pages - walk the list of dirty pages of the given address space
- * and write all of them.
+ * write_cache_pages - walk the list of dirty pages of the given address space and write all of them.
* @mapping: address space structure to write
* @wbc: subtract the number of written pages from *@wbc->nr_to_write
* @writepage: function called for each page
@@ -2090,9 +2100,10 @@ typedef int (*writepage_t)(struct page *page, struct writeback_control *wbc,
* WB_SYNC_ALL then we were called for data integrity and we must wait for
* existing IO to complete.
*/
-static int write_cache_pages(struct address_space *mapping,
- struct writeback_control *wbc, writepage_t writepage,
- void *data)
+int extent_write_cache_pages(struct extent_io_tree *tree,
+ struct address_space *mapping,
+ struct writeback_control *wbc,
+ writepage_t writepage, void *data)
{
struct backing_dev_info *bdi = mapping->backing_dev_info;
int ret = 0;
@@ -2138,7 +2149,10 @@ retry:
* swizzled back from swapper_space to tmpfs file
* mapping
*/
- lock_page(page);
+ if (tree->ops && tree->ops->write_cache_pages_lock_hook)
+ tree->ops->write_cache_pages_lock_hook(page);
+ else
+ lock_page(page);
if (unlikely(page->mapping != mapping)) {
unlock_page(page);
@@ -2187,9 +2201,12 @@ retry:
}
if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
mapping->writeback_index = index;
+
+ if (wbc->range_cont)
+ wbc->range_start = index << PAGE_CACHE_SHIFT;
return ret;
}
-#endif
+EXPORT_SYMBOL(extent_write_cache_pages);
int extent_write_full_page(struct extent_io_tree *tree, struct page *page,
get_extent_t *get_extent,
@@ -2214,7 +2231,8 @@ int extent_write_full_page(struct extent_io_tree *tree, struct page *page,
ret = __extent_writepage(page, wbc, &epd);
- write_cache_pages(mapping, &wbc_writepages, __extent_writepage, &epd);
+ extent_write_cache_pages(tree, mapping, &wbc_writepages,
+ __extent_writepage, &epd);
if (epd.bio) {
submit_one_bio(WRITE, epd.bio, 0);
}
@@ -2235,7 +2253,8 @@ int extent_writepages(struct extent_io_tree *tree,
.get_extent = get_extent,
};
- ret = write_cache_pages(mapping, wbc, __extent_writepage, &epd);
+ ret = extent_write_cache_pages(tree, mapping, wbc,
+ __extent_writepage, &epd);
if (epd.bio) {
submit_one_bio(WRITE, epd.bio, 0);
}
@@ -2567,15 +2586,19 @@ static struct extent_buffer *__alloc_extent_buffer(struct extent_io_tree *tree,
gfp_t mask)
{
struct extent_buffer *eb = NULL;
+#ifdef LEAK_DEBUG
unsigned long flags;
+#endif
eb = kmem_cache_zalloc(extent_buffer_cache, mask);
eb->start = start;
eb->len = len;
mutex_init(&eb->mutex);
+#ifdef LEAK_DEBUG
spin_lock_irqsave(&leak_lock, flags);
list_add(&eb->leak_list, &buffers);
spin_unlock_irqrestore(&leak_lock, flags);
+#endif
atomic_set(&eb->refs, 1);
return eb;
@@ -2583,10 +2606,12 @@ static struct extent_buffer *__alloc_extent_buffer(struct extent_io_tree *tree,
static void __free_extent_buffer(struct extent_buffer *eb)
{
+#ifdef LEAK_DEBUG
unsigned long flags;
spin_lock_irqsave(&leak_lock, flags);
list_del(&eb->leak_list);
spin_unlock_irqrestore(&leak_lock, flags);
+#endif
kmem_cache_free(extent_buffer_cache, eb);
}
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 315cfce..3cb411a 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -50,6 +50,7 @@ struct extent_io_ops {
unsigned long old, unsigned long bits);
int (*clear_bit_hook)(struct inode *inode, u64 start, u64 end,
unsigned long old, unsigned long bits);
+ int (*write_cache_pages_lock_hook)(struct page *page);
};
struct extent_io_tree {
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 49c4f5b4..61a377b 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -161,7 +161,8 @@ static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root,
int ret;
mutex_lock(&root->fs_info->trans_mutex);
- if ((wait == 1 && !root->fs_info->open_ioctl_trans) || wait == 2)
+ if (!root->fs_info->log_root_recovering &&
+ ((wait == 1 && !root->fs_info->open_ioctl_trans) || wait == 2))
wait_current_trans(root);
ret = join_transaction(root);
BUG_ON(ret);
@@ -328,9 +329,17 @@ int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
index = start >> PAGE_CACHE_SHIFT;
start = (u64)(index + 1) << PAGE_CACHE_SHIFT;
- page = find_lock_page(btree_inode->i_mapping, index);
+ page = find_get_page(btree_inode->i_mapping, index);
if (!page)
continue;
+
+ btree_lock_page_hook(page);
+ if (!page->mapping) {
+ unlock_page(page);
+ page_cache_release(page);
+ continue;
+ }
+
if (PageWriteback(page)) {
if (PageDirty(page))
wait_on_page_writeback(page);
@@ -360,7 +369,8 @@ int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
if (!page)
continue;
if (PageDirty(page)) {
- lock_page(page);
+ btree_lock_page_hook(page);
+ wait_on_page_writeback(page);
err = write_one_page(page, 0);
if (err)
werr = err;
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index d1ce831..13d7ee8 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1176,8 +1176,8 @@ static noinline int replay_one_name(struct btrfs_trans_handle *trans,
struct btrfs_key found_key;
struct btrfs_key log_key;
struct inode *dir;
- struct inode *inode;
u8 log_type;
+ int exists;
int ret;
dir = read_one_inode(root, key->objectid);
@@ -1190,6 +1190,13 @@ static noinline int replay_one_name(struct btrfs_trans_handle *trans,
name_len);
btrfs_dir_item_key_to_cpu(eb, di, &log_key);
+ exists = btrfs_lookup_inode(trans, root, path, &log_key, 0);
+ if (exists == 0)
+ exists = 1;
+ else
+ exists = 0;
+ btrfs_release_path(root, path);
+
if (key->type == BTRFS_DIR_ITEM_KEY) {
dst_di = btrfs_lookup_dir_item(trans, root, path, key->objectid,
name, name_len, 1);
@@ -1224,11 +1231,9 @@ static noinline int replay_one_name(struct btrfs_trans_handle *trans,
* don't drop the conflicting directory entry if the inode
* for the new entry doesn't exist
*/
- inode = read_one_inode(root, log_key.objectid);
- if (!inode)
+ if (!exists)
goto out;
- iput(inode);
ret = drop_one_dir_item(trans, root, path, dir, dst_di);
BUG_ON(ret);
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