* Liu Bo <bo.li....@oracle.com> [2012-11-19 23:27:53 +0800]:
> On Mon, Nov 19, 2012 at 11:07:52AM -0200, Gustavo Padovan wrote:
> > > can you please run
> > > 'gdb fs/btrfs/btrfs.ko' and 'list *block_rsv_release_bytes+0x21' to
> > > check which one is NULL pointer?
> >
> >
> > (gdb) list *block_rsv_release_bytes+0x21
> > 0xffffffff811a83c1 is in block_rsv_release_bytes
> > (fs/btrfs/extent-tree.c:4065).
> > 4060
> > 4061 static void block_rsv_release_bytes(struct btrfs_fs_info
> > *fs_info,
> > 4062 struct btrfs_block_rsv
> > *block_rsv,
> > 4063 struct btrfs_block_rsv
> > *dest, u64
> > num_bytes)
> > 4064 {
> > 4065 struct btrfs_space_info *space_info =
> > block_rsv->space_info;
> > 4066
> > 4067 spin_lock(&block_rsv->lock);
> > 4068 if (num_bytes == (u64)-1)
> > 4069 num_bytes = block_rsv->size;
> > (gdb)
> >
> > Seems block_rsv is NULL here and looking to btrfs_block_rsv_release() it can
> > only be NULL at this point if global_rsv->full is true otherwise the crash
> > would happen there. I didn't go any further than this.
> >
> > Gustavo
>
> Can you check if the following commit is in your tree?
>
> commit 321f0e70225abc792d74902a2bc4a60164265fd4
> Author: Miao Xie <mi...@cn.fujitsu.com>
>
> Btrfs: fix wrong orphan count of the fs/file tree
>
> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
> index 878116d..a6824bd 100644
> --- a/fs/btrfs/inode.c
> +++ b/fs/btrfs/inode.c
> @@ -2228,7 +2228,7 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans,
> struct inode *inode)
> insert = 1;
> #endif
> insert = 1;
> - atomic_dec(&root->orphan_inodes);
> + atomic_inc(&root->orphan_inodes);
> }
>
> if (!test_and_set_bit(BTRFS_INODE_ORPHAN_META_RESERVED,
Yes, it is. I'm using linus tree from last week, head at c5e35d6.
Gustavo
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