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Btrfs: fix the amount of space reserved for unlink

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Our unlink reservations were a bit much, we were reserving 10 and I only count 8
possible items we're touching, so comment what we're reserving for and fix the
count value.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
This commit is contained in:
Josef Bacik 2011-10-11 14:18:24 -04:00
parent 4b91c14f91
commit e70bea5fe0
1 changed files with 10 additions and 1 deletions
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11
fs/btrfs/inode.c
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@ -2758,7 +2758,16 @@ static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir,
u64 ino = btrfs_ino(inode);
u64 dir_ino = btrfs_ino(dir);
trans = btrfs_start_transaction(root, 10);
/*
* 1 for the possible orphan item
* 1 for the dir item
* 1 for the dir index
* 1 for the inode ref
* 1 for the inode ref in the tree log
* 2 for the dir entries in the log
* 1 for the inode
*/
trans = btrfs_start_transaction(root, 8);
if (!IS_ERR(trans) || PTR_ERR(trans) != -ENOSPC)
return trans;