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-rw-r--r--fs/btrfs/inode.c45
1 files changed, 31 insertions, 14 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 401dfb2a94e8..ccc4f1121210 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -428,6 +428,7 @@ again:
start, end, NULL,
EXTENT_CLEAR_UNLOCK_PAGE | EXTENT_CLEAR_DIRTY |
EXTENT_CLEAR_DELALLOC |
+ EXTENT_CLEAR_ACCOUNTING |
EXTENT_SET_WRITEBACK | EXTENT_END_WRITEBACK);
ret = 0;
goto free_pages_out;
@@ -722,6 +723,7 @@ static noinline int cow_file_range(struct inode *inode,
EXTENT_CLEAR_UNLOCK_PAGE |
EXTENT_CLEAR_UNLOCK |
EXTENT_CLEAR_DELALLOC |
+ EXTENT_CLEAR_ACCOUNTING |
EXTENT_CLEAR_DIRTY |
EXTENT_SET_WRITEBACK |
EXTENT_END_WRITEBACK);
@@ -1195,15 +1197,17 @@ static int btrfs_split_extent_hook(struct inode *inode,
root->fs_info->max_extent);
/*
- * if we break a large extent up then leave delalloc_extents be,
- * since we've already accounted for the large 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;
}
- BTRFS_I(inode)->delalloc_extents++;
+ spin_lock(&BTRFS_I(inode)->accounting_lock);
+ BTRFS_I(inode)->outstanding_extents++;
+ spin_unlock(&BTRFS_I(inode)->accounting_lock);
return 0;
}
@@ -1234,7 +1238,9 @@ static int btrfs_merge_extent_hook(struct inode *inode,
/* we're not bigger than the max, unreserve the space and go */
if (new_size <= root->fs_info->max_extent) {
- BTRFS_I(inode)->delalloc_extents--;
+ spin_lock(&BTRFS_I(inode)->accounting_lock);
+ BTRFS_I(inode)->outstanding_extents--;
+ spin_unlock(&BTRFS_I(inode)->accounting_lock);
return 0;
}
@@ -1248,7 +1254,9 @@ static int btrfs_merge_extent_hook(struct inode *inode,
root->fs_info->max_extent) > num_extents)
return 0;
- BTRFS_I(inode)->delalloc_extents--;
+ spin_lock(&BTRFS_I(inode)->accounting_lock);
+ BTRFS_I(inode)->outstanding_extents--;
+ spin_unlock(&BTRFS_I(inode)->accounting_lock);
return 0;
}
@@ -1270,7 +1278,9 @@ static int btrfs_set_bit_hook(struct inode *inode, u64 start, u64 end,
if (!(old & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) {
struct btrfs_root *root = BTRFS_I(inode)->root;
- BTRFS_I(inode)->delalloc_extents++;
+ spin_lock(&BTRFS_I(inode)->accounting_lock);
+ 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;
@@ -1298,8 +1308,12 @@ static int btrfs_clear_bit_hook(struct inode *inode,
if ((state->state & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) {
struct btrfs_root *root = BTRFS_I(inode)->root;
- BTRFS_I(inode)->delalloc_extents--;
- btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
+ if (bits & EXTENT_DO_ACCOUNTING) {
+ spin_lock(&BTRFS_I(inode)->accounting_lock);
+ BTRFS_I(inode)->outstanding_extents--;
+ spin_unlock(&BTRFS_I(inode)->accounting_lock);
+ btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
+ }
spin_lock(&root->fs_info->delalloc_lock);
if (state->end - state->start + 1 >
@@ -4825,7 +4839,8 @@ static void btrfs_invalidatepage(struct page *page, unsigned long offset)
*/
clear_extent_bit(tree, page_start, page_end,
EXTENT_DIRTY | EXTENT_DELALLOC |
- EXTENT_LOCKED, 1, 0, NULL, GFP_NOFS);
+ EXTENT_LOCKED | EXTENT_DO_ACCOUNTING, 1, 0,
+ NULL, GFP_NOFS);
/*
* whoever cleared the private bit is responsible
* for the finish_ordered_io
@@ -4838,8 +4853,8 @@ static void btrfs_invalidatepage(struct page *page, unsigned long offset)
lock_extent(tree, page_start, page_end, GFP_NOFS);
}
clear_extent_bit(tree, page_start, page_end,
- EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC,
- 1, 1, NULL, GFP_NOFS);
+ EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC |
+ EXTENT_DO_ACCOUNTING, 1, 1, NULL, GFP_NOFS);
__btrfs_releasepage(page, GFP_NOFS);
ClearPageChecked(page);
@@ -4934,7 +4949,8 @@ again:
* prepare_pages in the normal write path.
*/
clear_extent_bits(&BTRFS_I(inode)->io_tree, page_start, page_end,
- EXTENT_DIRTY | EXTENT_DELALLOC, GFP_NOFS);
+ EXTENT_DIRTY | EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING,
+ GFP_NOFS);
ret = btrfs_set_extent_delalloc(inode, page_start, page_end);
if (ret) {
@@ -5082,8 +5098,9 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
return NULL;
ei->last_trans = 0;
ei->logged_trans = 0;
- ei->delalloc_extents = 0;
- ei->delalloc_reserved_extents = 0;
+ ei->outstanding_extents = 0;
+ ei->reserved_extents = 0;
+ spin_lock_init(&ei->accounting_lock);
btrfs_ordered_inode_tree_init(&ei->ordered_tree);
INIT_LIST_HEAD(&ei->i_orphan);
INIT_LIST_HEAD(&ei->ordered_operations);