Re: [PATCH 1/7] fsstress: rename setxattr operation to chproj

[Dave Chinner <david@fromorbit.com>]

On Thu, Mar 28, 2019 at 06:53:52PM +0000, fdmanana@kernel.org wrote:
> From: Filipe Manana <fdmanana@suse.com>
> 
> The existing setxattr operation is used to change the project identifier
> attribute associated with an inode, and not about setting a xattr (the
> name and value pair) for a file/directory, which is confusing. So rename
> the operation to chproj, which is more descriptive about what it does
> and avoids any confusion.
> 
> Fsstress currently has no operations for setting and getting xattrs of a
> file (for any namespace), and this patch is a preparation for adding such
> operations in a subsequent patch.
> 
> This operation actually used to be named chproj until the following
> commit:
> 
>  commit 6449a993f2dfb3faaaa44e29d2f7d1bb7c5db9ba
>  Author: Nathan Scott <nathans@sgi.com>
>  Date:   Mon Dec 5 21:41:47 2005 +0000
> 
>      Switch to always using get/setxattr rather than a separate projid call on IRIX.
>      Merge of master-melb:xfs-cmds:24692a by kenmcd.
> 
> Which does not explain the rationale for the renaming at all.

Yes it does. The ioctls the function uses are called "get/setxattr",
not "chproj". i.e. FS_IOC_FS[GS]ETXATTR.

Yes, it currently changes the project ID, but that ioctl can change
a bunch more flag attributes on inodes. I'm guessing the intent was
to extend it to changing more than just the project ID. e.g setting
extent size hints.

The intent was most likely to extend it to testing other bits of
the FS_IOC_FS[GS]ETXATTR interface, so it's appropriately named. if
youare going to change it, then "fssetxattr" is probably the right
thing to change it to...

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com