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mm: declare mpol_to_str() when CONFIG_TMPFS=n

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When CONFIG_TMPFS=n mpol_to_str() is not declared in mempolicy.h.
However, in the NUMA case, the definition is always compiled.

Since it is not strictly true that tmpfs is the only client, and since the
symbol was always lurking around anyways, export mpol_to_str()
unconditionally.  Furthermore, this will allow us to move show_numa_map()
out of mempolicy.c and into the procfs subsystem.

Signed-off-by: Stephen Wilson <wilsons@start.ca>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Stephen Wilson 2011-05-24 17:12:46 -07:00 committed by Linus Torvalds
parent 9840e37239
commit 13057efb0a
1 changed files with 2 additions and 2 deletions
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4
include/linux/mempolicy.h
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@ -231,10 +231,10 @@ int do_migrate_pages(struct mm_struct *mm,
#ifdef CONFIG_TMPFS
extern int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context);
#endif
extern int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol,
int no_context);
#endif
/* Check if a vma is migratable */
static inline int vma_migratable(struct vm_area_struct *vma)
@ -371,13 +371,13 @@ static inline int mpol_parse_str(char *str, struct mempolicy **mpol,
{
return 1; /* error */
}
#endif
static inline int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol,
int no_context)
{
return 0;
}
#endif
#endif /* CONFIG_NUMA */
#endif /* __KERNEL__ */