From 4148c347a42a2aba31f6f4d9a31c647c2d475697 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Fri, 29 May 2015 09:09:05 +1000 Subject: [PATCH] xfs: helper to convert holemask to inode alloc. bitmap The inobt record holemask field is a condensed data type designed to fit into the existing on-disk record and is zero based (allocated regions are set to 0, sparse regions are set to 1) to provide backwards compatibility. This makes the type somewhat complex for use in higher level inode manipulations such as individual inode allocation, etc. Rather than foist the complexity of dealing with this field to every bit of logic that requires inode granular information, create a helper to convert the holemask to an inode allocation bitmap. The inode allocation bitmap is inode granularity similar to the inobt record free mask and indicates which inodes of the chunk are physically allocated on disk, irrespective of whether the inode is considered allocated or free by the filesystem. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- Reading git-format-patch failed