The patch titled Subject: cgroups: add res_counter_write_u64() API has been removed from the -mm tree. Its filename was cgroups-add-res_counter_write_u64-api.patch This patch was dropped because it is obsolete The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ From: Frederic Weisbecker <fweisbec@xxxxxxxxx> Subject: cgroups: add res_counter_write_u64() API Extend the resource counter API with a mirror of res_counter_read_u64() to make it handy to update a resource counter value from a cgroup subsystem u64 value file. Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx> Acked-by: Paul Menage <paul@xxxxxxxxxxxxxx> Cc: Li Zefan <lizf@xxxxxxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Aditya Kali <adityakali@xxxxxxxxxx> Cc: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Kay Sievers <kay.sievers@xxxxxxxx> Cc: Tim Hockin <thockin@xxxxxxxxxx> Cc: Tejun Heo <htejun@xxxxxxxxx> Cc: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/res_counter.h | 2 ++ kernel/res_counter.c | 25 +++++++++++++++++++------ 2 files changed, 21 insertions(+), 6 deletions(-) diff -puN include/linux/res_counter.h~cgroups-add-res_counter_write_u64-api include/linux/res_counter.h --- a/include/linux/res_counter.h~cgroups-add-res_counter_write_u64-api +++ a/include/linux/res_counter.h @@ -82,6 +82,8 @@ int res_counter_memparse_write_strategy( int res_counter_write(struct res_counter *counter, int member, const char *buffer, write_strategy_fn write_strategy); +void res_counter_write_u64(struct res_counter *counter, int member, u64 val); + /* * the field descriptors. one for each member of res_counter */ diff -puN kernel/res_counter.c~cgroups-add-res_counter_write_u64-api kernel/res_counter.c --- a/kernel/res_counter.c~cgroups-add-res_counter_write_u64-api +++ a/kernel/res_counter.c @@ -168,12 +168,26 @@ int res_counter_memparse_write_strategy( return 0; } +void res_counter_write_u64(struct res_counter *counter, int member, u64 val) +{ + unsigned long long *target; + unsigned long flags; + + /* + * We need the lock to protect against concurrent add/dec on 32 bits. + * No need to ifdef it's seldom used. + */ + spin_lock_irqsave(&counter->lock, flags); + target = res_counter_member(counter, member); + *target = val; + spin_unlock_irqrestore(&counter->lock, flags); +} + int res_counter_write(struct res_counter *counter, int member, const char *buf, write_strategy_fn write_strategy) { char *end; - unsigned long flags; - unsigned long long tmp, *val; + unsigned long long tmp; if (write_strategy) { if (write_strategy(buf, &tmp)) @@ -183,9 +197,8 @@ int res_counter_write(struct res_counter if (*end != '\0') return -EINVAL; } - spin_lock_irqsave(&counter->lock, flags); - val = res_counter_member(counter, member); - *val = tmp; - spin_unlock_irqrestore(&counter->lock, flags); + + res_counter_write_u64(counter, member, tmp); + return 0; } _ Patches currently in -mm which might be from fweisbec@xxxxxxxxx are linux-next.patch reiserfs-delay-reiserfs-lock-until-journal-initialization.patch reiserfs-dont-lock-journal_init.patch reiserfs-dont-lock-root-inode-searching.patch cgroups-new-resource-counter-inheritance-api.patch cgroups-add-previous-cgroup-in-can_attach_task-attach_task-callbacks.patch cgroups-new-cancel_attach_task-subsystem-callback.patch cgroups-ability-to-stop-res-charge-propagation-on-bounded-ancestor.patch cgroups-add-res-counter-common-ancestor-searching.patch res_counter-allow-charge-failure-pointer-to-be-null.patch cgroups-pull-up-res-counter-charge-failure-interpretation-to-caller.patch cgroups-allow-subsystems-to-cancel-a-fork.patch cgroups-add-a-task-counter-subsystem.patch cgroups-add-a-task-counter-subsystem-fix.patch cgroup-fix-task-counter-common-ancestor-logic.patch cgroup-fix-task-counter-common-ancestor-logic-checkpatch-fixes.patch selftests-new-very-basic-kernel-selftests-directory.patch selftests-new-x86-breakpoints-selftest.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