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Btrfs: fix delalloc reservation amount tracepoint 

We can sometimes drop the reservation we had for our inode, so we need to remove
that amount from to_reserve so that our tracepoint reports a valid amount of
space.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2016-03-25 13:25:55 -04:00 committed by David Sterba
parent c51e7bb184
commit f485c9ee32
1 changed files with 3 additions and 1 deletions
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4
fs/btrfs/extent-tree.c
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@ -6000,8 +6000,10 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
spin_lock(&BTRFS_I(inode)->lock);
if (test_and_set_bit(BTRFS_INODE_DELALLOC_META_RESERVED,
&BTRFS_I(inode)->runtime_flags))
&BTRFS_I(inode)->runtime_flags)) {
to_reserve -= btrfs_calc_trans_metadata_size(root, 1);
release_extra = true;
}
BTRFS_I(inode)->reserved_extents += nr_extents;
spin_unlock(&BTRFS_I(inode)->lock);