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tmpfs: mpol=bind:0 don't cause mount error.

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commit d69b2e63e9 upstream.

Currently, following mount operation cause mount error.

% mount -t tmpfs -ompol=bind:0 none /tmp

Because commit 71fe804b6d (mempolicy: use struct mempolicy pointer in
shmem_sb_info) corrupted MPOL_BIND parse code.

This patch restore the needed one.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
KOSAKI Motohiro 2010-03-23 13:35:30 -07:00 committed by Greg Kroah-Hartman
parent 6af438190d
commit 6b200155ae
1 changed files with 7 additions and 3 deletions
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10
mm/mempolicy.c
View File

@ -2056,9 +2056,13 @@ int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context)
if (!nodelist)
err = 0;
goto out;
/*
* case MPOL_BIND: mpol_new() enforces non-empty nodemask.
*/
case MPOL_BIND:
/*
* Insist on a nodelist
*/
if (!nodelist)
goto out;
err = 0;
}
mode_flags = 0;