Commit 94da54d5 authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: document what LARP means 



Christoph requested a blurb somewhere explaining exactly what LARP
means.  I don't know of a good place other than the source code (debug
knobs aren't covered in Documentation/), so here it is.

Signed-off-by: default avatarDarrick J. Wong <djwong@kernel.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
parent e1429380

fs/xfs/xfs_sysfs.c

+9 −0
Original line number Diff line number Diff line
@@ -229,6 +229,15 @@ pwork_threads_show( 
}

XFS_SYSFS_ATTR_RW(pwork_threads);



/*

 * The "LARP" (Logged extended Attribute Recovery Persistence) debugging knob

 * sets the XFS_DA_OP_LOGGED flag on all xfs_attr_set operations performed on

 * V5 filesystems.  As a result, the intermediate progress of all setxattr and

 * removexattr operations are tracked via the log and can be restarted during

 * recovery.  This is useful for testing xattr recovery prior to merging of the

 * parent pointer feature which requires it to maintain consistency, and may be

 * enabled for userspace xattrs in the future.

 */

static ssize_t

larp_store(

	struct kobject	*kobject,