From: Theodore Ts'o <tytso@mit.edu>
Date: Tue, 6 Jan 2009 20:16:33 +0000 (-0500)
Subject: block: Add Kconfig help which notes that ext4 needs CONFIG_LBD
X-Git-Tag: firefly_0821_release~15940^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4d783b093cd4f3e2738527365979cbd1c5101065;p=firefly-linux-kernel-4.4.55.git

block: Add Kconfig help which notes that ext4 needs CONFIG_LBD

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/block/Kconfig b/block/Kconfig
index ac0956f77785..0cbb3b88b59a 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -36,6 +36,12 @@ config LBD
 	  This option also enables support for single files larger than
 	  2TB.
 
+	  The ext4 filesystem requires that this feature be enabled in
+	  order to support filesystems that have the huge_file feature
+	  enabled.    Otherwise, it will refuse to mount any filesystems
+	  that use the huge_file feature, which is enabled by default
+	  by mke2fs.ext4.   The GFS2 filesystem also requires this feature.
+
 	  If unsure, say N.
 
 config BLK_DEV_IO_TRACE