[GIT PULL] jfs update

shaggy
2009-06-16T19:14:18Z

This fixes a regression introduced in 2.6.30. I'll send it to stable as well.

This will update the following files:

fs/jfs/jfs_extent.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

through these ChangeSets:

commit f7c52fd17a7dda42fc9e88c2b2678403419bfe63
Author: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Date: Tue Jun 16 13:43:22 2009 -0500

jfs: fix regression preventing coalescing of extents

Commit fec1878fe952b994125a3be7c94b1322db586f3b 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>