From: Steve French <smfrench@gmail.com>
Date: Sun, 17 Aug 2014 13:38:47 +0000 (-0500)
Subject: enable fallocate punch hole ("fallocate -p") for SMB3
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~33^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31742c5a331766bc7df6b0d525df00c6cd20d5a6;p=pandora-kernel.git

enable fallocate punch hole ("fallocate -p") for SMB3

Implement FALLOC_FL_PUNCH_HOLE (which does not change the file size
fortunately so this matches the behavior of the equivalent SMB3
fsctl call) for SMB3 mounts.  This allows "fallocate -p" to work.
It requires that the server support setting files as sparse
(which Windows allows).

Signed-off-by: Steve French <smfrench@gmail.com>
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