The patch titled Subject: llist: return whether list is empty before adding in llist_add has been removed from the -mm tree. Its filename was llist-return-whether-list-is-empty-before-adding-in-llist_add.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ From: Huang Ying <ying.huang@xxxxxxxxx> Subject: llist: return whether list is empty before adding in llist_add This is needed by irq_work. And because list_add_xxx functions are inline, this can be optimized out if not needed by callers. Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx> Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/llist.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff -puN include/linux/llist.h~llist-return-whether-list-is-empty-before-adding-in-llist_add include/linux/llist.h --- a/include/linux/llist.h~llist-return-whether-list-is-empty-before-adding-in-llist_add +++ a/include/linux/llist.h @@ -150,8 +150,10 @@ static inline bool llist_empty(const str * llist_add - add a new entry * @new: new entry to be added * @head: the head for your lock-less list + * + * Return whether list is empty before adding. */ -static inline void llist_add(struct llist_node *new, struct llist_head *head) +static inline bool llist_add(struct llist_node *new, struct llist_head *head) { struct llist_node *entry, *old_entry; @@ -166,6 +168,8 @@ static inline void llist_add(struct llis break; cpu_relax(); } + + return old_entry == NULL; } /** @@ -173,8 +177,10 @@ static inline void llist_add(struct llis * @new_first: first entry in batch to be added * @new_last: last entry in batch to be added * @head: the head for your lock-less list + * + * Return whether list is empty before adding. */ -static inline void llist_add_batch(struct llist_node *new_first, +static inline bool llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, struct llist_head *head) { @@ -191,6 +197,8 @@ static inline void llist_add_batch(struc break; cpu_relax(); } + + return old_entry == NULL; } /** _ Patches currently in -mm which might be from ying.huang@xxxxxxxxx are linux-next.patch lib-bitmapc-quiet-sparse-noise-about-address-space.patch lib-bitmapc-quiet-sparse-noise-about-address-space-fix.patch llist-return-whether-list-is-empty-before-adding-in-llist_add-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html