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>

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>
Theodore Ts'o
1 parent abda141892
Showing 1 changed file with 6 additions and 0 deletions Side-by-side Diff
block/Kconfig
@@ -36,6 +36,12 @@
 	  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
...	...	@@ -36,6 +36,12 @@
36	36	This option also enables support for single files larger than
37	37	2TB.
38	38
	39	+ The ext4 filesystem requires that this feature be enabled in
	40	+ order to support filesystems that have the huge_file feature
	41	+ enabled. Otherwise, it will refuse to mount any filesystems
	42	+ that use the huge_file feature, which is enabled by default
	43	+ by mke2fs.ext4. The GFS2 filesystem also requires this feature.
	44	+
39	45	If unsure, say N.
40	46
41	47	config BLK_DEV_IO_TRACE