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

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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 <[email protected]>
Cc: Ravikiran Thirumalai <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Mel Gorman <[email protected]>
Acked-by: Lee Schermerhorn <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KOSAKI Motohiro 2010-03-23 13:35:30 -07:00 • committed by Linus Torvalds
commit d69b2e63e9
1 changed files with 7 additions and 3 deletions
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10
mm/mempolicy.c
View file

@ -2222,9 +2222,13 @@ 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;