From: akpm@osdl.org <akpm@osdl.org>
Date: Sun, 1 May 2005 15:58:35 +0000 (-0700)
Subject: [PATCH] generic_file_buffered_write fixes
X-Git-Tag: v2.6.12-rc4~136^2~185
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f021e9210185b46e41ec3a0e78ec1621e168eacb;p=pandora-kernel.git

[PATCH] generic_file_buffered_write fixes

Anton Altaparmakov <aia21@cam.ac.uk> points out:

- It calls fault_in_pages_readable() which is completely bogus if @nr_segs >
  1.  It needs to be replaced by a to be written
  "fault_in_pages_readable_iovec()".

- It increments @buf even in the iovec case thus @buf can point to random
  memory really quickly (in the iovec case) and then it calls
  fault_in_pages_readable() on this random memory.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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