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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>
This commit is contained in:
Josef Bacik 2011-10-05 16:35:28 -04:00
parent 549b4fdb8f
commit 9a82ca659d
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/extent-tree.c
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@ -3521,7 +3521,7 @@ static int reserve_metadata_bytes(struct btrfs_root *root,
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;
}