[PATCH] common: switch _get_available_space accounting to units of 512 bytes

[Anthony Iliopoulos <ailiop@suse.com>]

xfs/220 relies on detecting free space changes after truncation of
single filesystem blocks, and this fails when the fs block size is 512b.

By default df is counting 1024b block units and as such is not reporting
any change in the number of available blocks after freeing just a 512b
block.

Switch the df reporting block size from units of 1024b blocks to 512b
blocks to accommodate accounting for smaller granularity fs block sizes.

Signed-off-by: Anthony Iliopoulos <ailiop@suse.com>
---
 common/rc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/common/rc b/common/rc
index 90749343f3c4..a32bbe3c0b5f 100644
--- a/common/rc
+++ b/common/rc
@@ -4209,8 +4209,8 @@ _get_available_space()
 		exit 1
 	fi
 	local avail_kb;
-	avail_kb=`$DF_PROG $1 | tail -n1 | awk '{ print $5 }'`
-	echo $((avail_kb * 1024))
+	avail_kb=`$DF_PROG --block-size=512 $1 | tail -n1 | awk '{ print $5 }'`
+	echo $((avail_kb * 512))
 }
 
 # get the total space in bytes
-- 
2.35.3