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-rw-r--r--Documentation/mkfs.btrfs.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/mkfs.btrfs.txt b/Documentation/mkfs.btrfs.txt
index 0cab626b..c6becb99 100644
--- a/Documentation/mkfs.btrfs.txt
+++ b/Documentation/mkfs.btrfs.txt
@@ -39,7 +39,10 @@ spanning across the specified devices.
OPTIONS
-------
-A|--alloc-start <offset>::
-Specify the offset from the start of the device to start the btrfs filesystem. The default value is zero, or the start of the device.
+Specify the offset from the start of the device at which to start allocations
+in this btrfs filesystem. The default value is zero, or the start of the
+device. This option is intended only for debugging filesystem resize
+operations.
-b|--byte-count <size>::
Specify the size of the resultant filesystem. If this option is not used,