Commit f7c52fd1 authored Jun 16, 2009 by Dave Kleikamp

jfs: fix regression preventing coalescing of extents



Commit fec1878f caused a regression in
which contiguous blocks being allocated to the end of an extent were
getting a new extent created.  This typically results in files entirely
made up of 1-block extents even though the blocks are contiguous on
disk.

Apparently grub doesn't handle a jfs file being fragmented into too many
extents, since it refuses to boot a kernel from jfs that was created by
the 2.6.30 kernel.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Reported-by: Alex <alevkovich@tut.by>

parent a525890c

fs/jfs/jfs_extent.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -391,6 +391,7 @@ int extHint(struct inode ip, s64 offset, xad_t xp)
		}
		XADaddress(xp, xaddr);
		XADlength(xp, xlen);
		XADoffset(xp, prev);
		/*
		* only preserve the abnr flag within the xad flags
		* of the returned hint.