From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 11 Feb 2015 03:55:45 +0000 (-0800)
Subject: crypto: fix af_alg_make_sg() conversion to iov_iter
X-Git-Tag: fixes-v4.0-rc1~150^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9399f0c51489ae8c16d6559b82a452fdc1895e91;p=pandora-kernel.git

crypto: fix af_alg_make_sg() conversion to iov_iter

Commit 1d10eb2f156f ("crypto: switch af_alg_make_sg() to iov_iter")
broke af_alg_make_sg() and skcipher_recvmsg() in the process of moving
them to the iov_iter interfaces.  The 'npages' calculation in the formar
calculated the number of *bytes* in the pages, and in the latter case
the conversion didn't re-read the value of 'ctx->used' after waiting for
it to become non-zero.

This reverts to the original code for both these cases.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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