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>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index f9711a8..f95e550 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3521,7 +3521,7 @@
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;
}