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| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2010-03-23 13:35:30 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-04-01 15:55:58 -0700 |
| commit | 4fbd4ab7b17a71132fbf9a21ffeee6e1a25f070e (patch) | |
| tree | 01af5aa72c7258a9b2e4690fb960cc9bde42b339 | |
| parent | b221c4ef88aa82fdfcab9e98cca34a1173584bbf (diff) | |
| download | lwn-4fbd4ab7b17a71132fbf9a21ffeee6e1a25f070e.tar.gz lwn-4fbd4ab7b17a71132fbf9a21ffeee6e1a25f070e.zip | |
tmpfs: mpol=bind:0 don't cause mount error.
commit d69b2e63e9172afb4d07c305601b79a55509ac4c upstream.
Currently, following mount operation cause mount error.
% mount -t tmpfs -ompol=bind:0 none /tmp
Because commit 71fe804b6d5 (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>
| -rw-r--r-- | mm/mempolicy.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 13855e22aada..b2f22557b8ff 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2149,9 +2149,13 @@ 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; |