[PATCH 0/4] xfs: xfs_spaceman utility rework

[Dhruvesh Rathore]

The original kernel patch that Dave wrote for xfs_spaceman implemented
FS_IOC_FIEMAPFS ioctl, here is the original fiemap extension patch:

http://oss.sgi.com/archives/xfs/2012-10/msg00363.html

These patches were not posted and were just forward ported to a current 
3.18-rc7+ for-next XFS tree and were pushed to the fiemapfs branch in Dave's
kernel tree at:

git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs.git


The original xfs_spaceman tool that Dave wrote to call the fiemap
interface and make use of it is here:

http://oss.sgi.com/archives/xfs/2012-10/msg00366.html

Dave just updated it to the 3.2.2 code base and pushed it to the
spaceman branch in this tree:

git://git.kernel.org/pub/scm/fs/xfs/xfsprogs-dev.git

The description of patches in this series are as follows:

1) [PATCH 1/4] xfs: Accounting for AGFL blocks in xfs_spaceman
	This patch adds functionality in xfs_spaceman allowing it to
	account for AG Free List blocks. The previous version of
	xfs_spaceman failed to account for AGFL blocks as they 
	aren't found by walking the free space btrees, so we have to
	walk each AGFL to find them. A new function 
	xfs_alloc_agfl_freespace_map() is added which will walk the free
	extents in AGFL and account for these AGFL blocks by using 
	agf_flfirst, agf_fllast and agf_flcount fields.


2) [PATCH 2/4] xfsprogs: Addition in debug option -d of xfs_spaceman
	This patch allows adding a title for the contents which are
	printed when xfs_spaceman is run with -d debug option from command
	line. The titles added are agno, agbno and len.


3) [PATCH 3/4] xfs: Adding XFS_IOC_FIEMAPFS ioctl for use in xfs_spaceman
	This patch is concerned with the changes made in kernel space code
	for adding a new XFS specific ioctl XFS_IOC_FIEMAPFS in xfs_spaceman.
	This ioctl will replace a file based ioctl FS_IOC_FIEMAPFS, and allow
	us to modify the ioctl as per requirement in the future.


4) [PATCH 4/4] xfprogs: Adding XFS_IOC_FIEMAPFS ioctl for use in xfs_spaceman
	This patch is concerened with the changes made in user space code
	for using XFS_IOC_FIEMAPFS ioctl in xfs_spaceman, which will replace
	FS_IOC_FIEMAPFS and make use of fiemap plumbing.

Comments, thoughts etc are welcome.

Regards,
A-DRS.