From: Namjae Jeon <namjae.jeon@samsung.com>
Date: Wed, 25 Mar 2015 04:07:05 +0000 (+1100)
Subject: fs: Add support FALLOC_FL_INSERT_RANGE for fallocate
X-Git-Tag: omap-for-v4.1/fixes-rc1~44^2~2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd46c787788d;p=pandora-kernel.git

fs: Add support FALLOC_FL_INSERT_RANGE for fallocate

FALLOC_FL_INSERT_RANGE command is the opposite command of
FALLOC_FL_COLLAPSE_RANGE that is needed for someone who wants to add
some data in the middle of file.

FALLOC_FL_INSERT_RANGE will create space for writing new data within
a file after shifting extents to right as given length. This command
also has same limitations as FALLOC_FL_COLLAPSE_RANGE in that
operations need to be filesystem block boundary aligned and cannot
cross the current EOF.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---

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