[hackers] [ubase] Add fallocate manpage || sin

[git]

commit 555e6bc447139f530750e3e97a0d563c416aad89
Author: sin <s...@2f30.org>
Date:   Sat Apr 12 14:04:38 2014 +0100

    Add fallocate manpage

diff --git a/fallocate.1 b/fallocate.1
new file mode 100644
index 0000000..d4c576b
--- /dev/null
+++ b/fallocate.1
@@ -0,0 +1,18 @@
+.TH FALLOCATE 1 ubase-VERSION
+.SH NAME
+BfallocateR - preallocate blocks to a file
+.SH SYNOPSIS
+BfallocateR [B-oI offsetR] B-lR Ilength fileR
+.SH DESCRIPTION
+BfallocateR preallocates blocks to a file.  Only certain filesystems
+support the fallocate system call.  This is a very fast operation to allocate
+uninitialized blocks in a file without doing any IO.
+As  of the Linux Kernel v2.6.31, the fallocate system call is supported
+by the btrfs, ext4, ocfs2, and xfs filesystems.
+.SH OPTIONS
+.TP
+B-oR Specifies the beginning offset of the allocation, in bytes.
+.TP
+B-lR Specifies the length of the allocation, in bytes.
+.SH SEE ALSO
+fallocate(2)