Commit 9a82ca65 authored Oct 05, 2011 by Josef Bacik

Btrfs: take overflow into account in reserving space

My overcommit stuff can be a little racy when we're filling up the disk with
fs_mark and we overcommit into things that quickly get used up for data. So use
num_bytes to see if we have enough available space so we're less likely to
overcommit ourselves out of the ability to make reservations. Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>

parent 549b4fdb

fs/btrfs/extent-tree.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3521,7 +3521,7 @@ again:
		avail >>= 1;
		spin_unlock(&root->fs_info->free_chunk_lock);

		if (used + orig_bytes < space_info->total_bytes + avail) {
		if (used + num_bytes < space_info->total_bytes + avail) {
		space_info->bytes_may_use += orig_bytes;
		ret = 0;
		}

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