diff options
Diffstat (limited to 'include/linux/mempolicy.h')
| -rw-r--r-- | include/linux/mempolicy.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index 017def89e568..172b9c6acb91 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -112,6 +112,31 @@ static inline void mpol_put(struct mempolicy *pol) __mpol_put(pol); } +/* + * Does mempolicy pol need explicit unref after use? + * Currently only needed for shared policies. + */ +static inline int mpol_needs_cond_ref(struct mempolicy *pol) +{ + return (pol && (pol->flags & MPOL_F_SHARED)); +} + +static inline void mpol_cond_put(struct mempolicy *pol) +{ + if (mpol_needs_cond_ref(pol)) + __mpol_put(pol); +} + +extern struct mempolicy *__mpol_cond_copy(struct mempolicy *tompol, + struct mempolicy *frompol); +static inline struct mempolicy *mpol_cond_copy(struct mempolicy *tompol, + struct mempolicy *frompol) +{ + if (!frompol) + return frompol; + return __mpol_cond_copy(tompol, frompol); +} + extern struct mempolicy *__mpol_dup(struct mempolicy *pol); static inline struct mempolicy *mpol_dup(struct mempolicy *pol) { @@ -201,6 +226,16 @@ static inline void mpol_put(struct mempolicy *p) { } +static inline void mpol_cond_put(struct mempolicy *pol) +{ +} + +static inline struct mempolicy *mpol_cond_copy(struct mempolicy *to, + struct mempolicy *from) +{ + return from; +} + static inline void mpol_get(struct mempolicy *pol) { } |