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authorChris Mason <chris.mason@oracle.com>2009-05-18 10:41:58 -0400
committerChris Mason <chris.mason@oracle.com>2009-06-10 11:29:48 -0400
commit585ad2c3797dcaa643aeba75b9f072778adf3490 (patch)
tree4d48ff8f61f81a84bc620eb59215e1273f788d35
parent2c943de6ad795a174dcc424c293bb77f15ae3b8c (diff)
Btrfs: fix metadata dirty throttling limits
Once a metadata block has been written, it must be recowed, so the btrfs dirty balancing call has a check to make sure a fair amount of metadata was actually dirty before it started writing it back to disk. A previous commit had changed the dirty tracking for metadata without updating the btrfs dirty balancing checks. This commit switches it to use the correct counter. Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/disk-io.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7f5c6e3e999..e572cf478a5 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2378,17 +2378,14 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
* looks as though older kernels can get into trouble with
* this code, they end up stuck in balance_dirty_pages forever
*/
- struct extent_io_tree *tree;
u64 num_dirty;
- u64 start = 0;
unsigned long thresh = 32 * 1024 * 1024;
- tree = &BTRFS_I(root->fs_info->btree_inode)->io_tree;
if (current->flags & PF_MEMALLOC)
return;
- num_dirty = count_range_bits(tree, &start, (u64)-1,
- thresh, EXTENT_DIRTY);
+ num_dirty = root->fs_info->dirty_metadata_bytes;
+
if (num_dirty > thresh) {
balance_dirty_pages_ratelimited_nr(
root->fs_info->btree_inode->i_mapping, 1);