Btrfs: define write_cache_pages for linux kernel <= 2.6.20 instead
authorMiguel <miguel.filipe@gmail.com>
Fri, 11 Apr 2008 19:46:48 +0000 (15:46 -0400)
committerChris Mason <chris.mason@oracle.com>
Thu, 25 Sep 2008 15:04:01 +0000 (11:04 -0400)
write_cache_pages doesn't exist in linux 2.6.20,  change the #if
condition to match that.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/extent_io.c

Simple merge