> > diff --git a/fs/btrfs/inode-item.c b/fs/btrfs/inode-item.c
> > index baa74f3..496fb1c 100644
> > --- a/fs/btrfs/inode-item.c
> > +++ b/fs/btrfs/inode-item.c
> > @@ -18,6 +18,7 @@
> >
> > #include "ctree.h"
> > #include "disk-io.h"
> > +#include "hash.h"
> > #include "transaction.h"
> >
> > static int find_name_in_backref(struct btrfs_path *path, const char *name,
> > @@ -49,18 +50,56 @@ static int find_name_in_backref(struct btrfs_path
> > *path, const char *name,
> > return 0;
> > }
> >
> > -struct btrfs_inode_ref *
> > +int find_name_in_ext_backref(struct btrfs_path *path, const char *name,
> > + int name_len,
> > + struct btrfs_inode_extref **extref_ret)
>
> Exported functions should be prefixed "btrfs_". What about
> btrfs_find_extref_name?
>
> > +{
> > + struct extent_buffer *leaf;
> > + struct btrfs_inode_extref *extref;
> > + unsigned long ptr;
> > + unsigned long name_ptr;
> > + u32 item_size;
> > + u32 cur_offset = 0;
> > + int ref_name_len;
> > +
> > + leaf = path->nodes[0];
> > + item_size = btrfs_item_size_nr(leaf, path->slots[0]);
> > + ptr = btrfs_item_ptr_offset(leaf, path->slots[0]);
> > +
> > + /*
> > + * Search all extended backrefs in this item. We're only
> > + * looking through any collisions so most of the time this is
> > + * just going to compare against one buffer. If all is well,
> > + * we'll return success and the inode ref object.
> > + */
> > + while (cur_offset < item_size) {
> > + extref = (struct btrfs_inode_extref *) (ptr + cur_offset);
> > + name_ptr = (unsigned long)(&extref->name);
> > + ref_name_len = btrfs_inode_extref_name_len(leaf, extref);
> > +
> > + if (ref_name_len == name_len
> > + && (memcmp_extent_buffer(leaf, name, name_ptr, name_len) ==
> > 0)) {
> > + if (extref_ret)
> > + *extref_ret = extref;
> > + return 1;
> > + }
> > +
> > + cur_offset += ref_name_len + sizeof(*extref);
> > + }
> > + return 0;
>
> For consistency, I'd like to switch return 0 and 1.
Ok so btrfs_find_name_in_ext_backref() is designed to mirror
btrfs_find_name_in_backref() for obvious reasons - it does the same thing
except for extended backrefs. So it'd actually be inconsistent if I change
this (unless I change both but I don't think we want to do that).
The name is kept without the btrfs_ prefix for the same reasons, however I
don't think prefixing it is a big deal so I'll go ahead and make _that_
change unless you feel otherwise.
Thanks,
--Mark
--
Mark Fasheh
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