Commit 448d640b authored by Chris Mason's avatar Chris Mason
Browse files

Btrfs: Fine tune the btree writeback exclusion some more 



Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 8790bad7

fs/btrfs/disk-io.c

+4 −0
Original line number Diff line number Diff line
@@ -214,6 +214,10 @@ static int btree_writepages(struct address_space *mapping, 
		u64 num_dirty;

		u64 start = 0;

		unsigned long thresh = 96 * 1024 * 1024;



		if (wbc->for_kupdate)

			return 0;



		num_dirty = count_range_bits(tree, &start, thresh, EXTENT_DIRTY);

		if (num_dirty < thresh) {

			return 0;

fs/btrfs/file.c

+2 −1
Original line number Diff line number Diff line
@@ -767,6 +767,7 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf, 
		num_written += write_bytes;



		balance_dirty_pages_ratelimited_nr(inode->i_mapping, num_pages);

		if (num_pages < (root->leafsize >> PAGE_CACHE_SHIFT) + 1)

			btrfs_btree_balance_dirty(root, 1);

		cond_resched();

	}