diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-11 17:34:10 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-11 17:34:10 -0700 |
commit | a379f71a30dddbd2e7393624e455ce53c87965d1 (patch) | |
tree | c9c71b3eb19ff7e8618ff29e9d5ac99882b823e1 /include | |
parent | de34f4da7f62ff59ac6e1ef320b0fcfa3296fce3 (diff) | |
parent | 9c5d760b8d229b94c5030863a5edaee5f1a9d7b7 (diff) |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
- a few block updates that fell in my lap
- lib/ updates
- checkpatch
- autofs
- ipc
- a ton of misc other things
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (100 commits)
mm: split gfp_mask and mapping flags into separate fields
fs: use mapping_set_error instead of opencoded set_bit
treewide: remove redundant #include <linux/kconfig.h>
hung_task: allow hung_task_panic when hung_task_warnings is 0
kthread: add kerneldoc for kthread_create()
kthread: better support freezable kthread workers
kthread: allow to modify delayed kthread work
kthread: allow to cancel kthread work
kthread: initial support for delayed kthread work
kthread: detect when a kthread work is used by more workers
kthread: add kthread_destroy_worker()
kthread: add kthread_create_worker*()
kthread: allow to call __kthread_create_on_node() with va_list args
kthread/smpboot: do not park in kthread_create_on_cpu()
kthread: kthread worker API cleanup
kthread: rename probe_kthread_data() to kthread_probe_data()
scripts/tags.sh: enable code completion in VIM
mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
kdump, vmcoreinfo: report memory sections virtual addresses
ipc/sem.c: add cond_resched in exit_sme
...
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/auto_dev-ioctl.h | 211 | ||||
-rw-r--r-- | include/linux/auto_fs.h | 1 | ||||
-rw-r--r-- | include/linux/ctype.h | 5 | ||||
-rw-r--r-- | include/linux/dma-mapping.h | 5 | ||||
-rw-r--r-- | include/linux/export.h | 1 | ||||
-rw-r--r-- | include/linux/fs.h | 3 | ||||
-rw-r--r-- | include/linux/gpio/driver.h | 1 | ||||
-rw-r--r-- | include/linux/kexec.h | 6 | ||||
-rw-r--r-- | include/linux/kmemleak.h | 18 | ||||
-rw-r--r-- | include/linux/kthread.h | 88 | ||||
-rw-r--r-- | include/linux/pagemap.h | 20 | ||||
-rw-r--r-- | include/linux/radix-tree.h | 8 | ||||
-rw-r--r-- | include/linux/random.h | 2 | ||||
-rw-r--r-- | include/linux/relay.h | 3 | ||||
-rw-r--r-- | include/linux/sem.h | 1 | ||||
-rw-r--r-- | include/uapi/linux/auto_dev-ioctl.h | 221 | ||||
-rw-r--r-- | include/uapi/linux/auto_fs.h | 1 |
17 files changed, 357 insertions, 238 deletions
diff --git a/include/linux/auto_dev-ioctl.h b/include/linux/auto_dev-ioctl.h index 7caaf298f539..28c15050ebe6 100644 --- a/include/linux/auto_dev-ioctl.h +++ b/include/linux/auto_dev-ioctl.h @@ -10,214 +10,5 @@ #ifndef _LINUX_AUTO_DEV_IOCTL_H #define _LINUX_AUTO_DEV_IOCTL_H -#include <linux/auto_fs.h> -#include <linux/string.h> - -#define AUTOFS_DEVICE_NAME "autofs" - -#define AUTOFS_DEV_IOCTL_VERSION_MAJOR 1 -#define AUTOFS_DEV_IOCTL_VERSION_MINOR 0 - -#define AUTOFS_DEVID_LEN 16 - -#define AUTOFS_DEV_IOCTL_SIZE sizeof(struct autofs_dev_ioctl) - -/* - * An ioctl interface for autofs mount point control. - */ - -struct args_protover { - __u32 version; -}; - -struct args_protosubver { - __u32 sub_version; -}; - -struct args_openmount { - __u32 devid; -}; - -struct args_ready { - __u32 token; -}; - -struct args_fail { - __u32 token; - __s32 status; -}; - -struct args_setpipefd { - __s32 pipefd; -}; - -struct args_timeout { - __u64 timeout; -}; - -struct args_requester { - __u32 uid; - __u32 gid; -}; - -struct args_expire { - __u32 how; -}; - -struct args_askumount { - __u32 may_umount; -}; - -struct args_ismountpoint { - union { - struct args_in { - __u32 type; - } in; - struct args_out { - __u32 devid; - __u32 magic; - } out; - }; -}; - -/* - * All the ioctls use this structure. - * When sending a path size must account for the total length - * of the chunk of memory otherwise is is the size of the - * structure. - */ - -struct autofs_dev_ioctl { - __u32 ver_major; - __u32 ver_minor; - __u32 size; /* total size of data passed in - * including this struct */ - __s32 ioctlfd; /* automount command fd */ - - /* Command parameters */ - - union { - struct args_protover protover; - struct args_protosubver protosubver; - struct args_openmount openmount; - struct args_ready ready; - struct args_fail fail; - struct args_setpipefd setpipefd; - struct args_timeout timeout; - struct args_requester requester; - struct args_expire expire; - struct args_askumount askumount; - struct args_ismountpoint ismountpoint; - }; - - char path[0]; -}; - -static inline void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in) -{ - memset(in, 0, sizeof(struct autofs_dev_ioctl)); - in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR; - in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR; - in->size = sizeof(struct autofs_dev_ioctl); - in->ioctlfd = -1; -} - -/* - * If you change this make sure you make the corresponding change - * to autofs-dev-ioctl.c:lookup_ioctl() - */ -enum { - /* Get various version info */ - AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71, - AUTOFS_DEV_IOCTL_PROTOVER_CMD, - AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, - - /* Open mount ioctl fd */ - AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, - - /* Close mount ioctl fd */ - AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, - - /* Mount/expire status returns */ - AUTOFS_DEV_IOCTL_READY_CMD, - AUTOFS_DEV_IOCTL_FAIL_CMD, - - /* Activate/deactivate autofs mount */ - AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, - AUTOFS_DEV_IOCTL_CATATONIC_CMD, - - /* Expiry timeout */ - AUTOFS_DEV_IOCTL_TIMEOUT_CMD, - - /* Get mount last requesting uid and gid */ - AUTOFS_DEV_IOCTL_REQUESTER_CMD, - - /* Check for eligible expire candidates */ - AUTOFS_DEV_IOCTL_EXPIRE_CMD, - - /* Request busy status */ - AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, - - /* Check if path is a mountpoint */ - AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, -}; - -#define AUTOFS_IOCTL 0x93 - -#define AUTOFS_DEV_IOCTL_VERSION \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_PROTOVER \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_PROTOSUBVER \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_OPENMOUNT \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_CLOSEMOUNT \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_READY \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_FAIL \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_SETPIPEFD \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_CATATONIC \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_TIMEOUT \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_REQUESTER \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_EXPIRE \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_ASKUMOUNT \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl) - -#define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \ - _IOWR(AUTOFS_IOCTL, \ - AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl) - +#include <uapi/linux/auto_dev-ioctl.h> #endif /* _LINUX_AUTO_DEV_IOCTL_H */ diff --git a/include/linux/auto_fs.h b/include/linux/auto_fs.h index b4066bb89083..b8f814c95cf5 100644 --- a/include/linux/auto_fs.h +++ b/include/linux/auto_fs.h @@ -10,7 +10,6 @@ #define _LINUX_AUTO_FS_H #include <linux/fs.h> -#include <linux/limits.h> #include <linux/ioctl.h> #include <uapi/linux/auto_fs.h> #endif /* _LINUX_AUTO_FS_H */ diff --git a/include/linux/ctype.h b/include/linux/ctype.h index 653589e3e30e..f13e4ff6835a 100644 --- a/include/linux/ctype.h +++ b/include/linux/ctype.h @@ -22,7 +22,10 @@ extern const unsigned char _ctype[]; #define isalnum(c) ((__ismask(c)&(_U|_L|_D)) != 0) #define isalpha(c) ((__ismask(c)&(_U|_L)) != 0) #define iscntrl(c) ((__ismask(c)&(_C)) != 0) -#define isdigit(c) ((__ismask(c)&(_D)) != 0) +static inline int isdigit(int c) +{ + return '0' <= c && c <= '9'; +} #define isgraph(c) ((__ismask(c)&(_P|_U|_L|_D)) != 0) #define islower(c) ((__ismask(c)&(_L)) != 0) #define isprint(c) ((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0) diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 0f90eb5e3c6b..08528afdf58b 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -56,6 +56,11 @@ * that gives better TLB efficiency. */ #define DMA_ATTR_ALLOC_SINGLE_PAGES (1UL << 7) +/* + * DMA_ATTR_NO_WARN: This tells the DMA-mapping subsystem to suppress + * allocation failure reports (similarly to __GFP_NOWARN). + */ +#define DMA_ATTR_NO_WARN (1UL << 8) /* * A dma_addr_t can hold any valid DMA or bus address for the platform. diff --git a/include/linux/export.h b/include/linux/export.h index c565f87f005e..d7df4922da1d 100644 --- a/include/linux/export.h +++ b/include/linux/export.h @@ -78,7 +78,6 @@ extern struct module __this_module; #elif defined(CONFIG_TRIM_UNUSED_KSYMS) -#include <linux/kconfig.h> #include <generated/autoksyms.h> #define __EXPORT_SYMBOL(sym, sec) \ diff --git a/include/linux/fs.h b/include/linux/fs.h index c145219286a8..bc65d5918140 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -440,8 +440,9 @@ struct address_space { unsigned long nrexceptional; pgoff_t writeback_index;/* writeback starts here */ const struct address_space_operations *a_ops; /* methods */ - unsigned long flags; /* error bits/gfp mask */ + unsigned long flags; /* error bits */ spinlock_t private_lock; /* for use by the address_space */ + gfp_t gfp_mask; /* implicit gfp mask for allocations */ struct list_head private_list; /* ditto */ void *private_data; /* ditto */ } __attribute__((aligned(sizeof(long)))); diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 1f0be7213e6d..24e2cc56beb1 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -8,7 +8,6 @@ #include <linux/irqdomain.h> #include <linux/lockdep.h> #include <linux/pinctrl/pinctrl.h> -#include <linux/kconfig.h> struct gpio_desc; struct of_phandle_args; diff --git a/include/linux/kexec.h b/include/linux/kexec.h index d7437777baaa..406c33dcae13 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -259,6 +259,12 @@ phys_addr_t paddr_vmcoreinfo_note(void); vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name) #define VMCOREINFO_CONFIG(name) \ vmcoreinfo_append_str("CONFIG_%s=y\n", #name) +#define VMCOREINFO_PAGE_OFFSET(value) \ + vmcoreinfo_append_str("PAGE_OFFSET=%lx\n", (unsigned long)value) +#define VMCOREINFO_VMALLOC_START(value) \ + vmcoreinfo_append_str("VMALLOC_START=%lx\n", (unsigned long)value) +#define VMCOREINFO_VMEMMAP_START(value) \ + vmcoreinfo_append_str("VMEMMAP_START=%lx\n", (unsigned long)value) extern struct kimage *kexec_image; extern struct kimage *kexec_crash_image; diff --git a/include/linux/kmemleak.h b/include/linux/kmemleak.h index 4894c6888bc6..1c2a32829620 100644 --- a/include/linux/kmemleak.h +++ b/include/linux/kmemleak.h @@ -38,6 +38,11 @@ extern void kmemleak_not_leak(const void *ptr) __ref; extern void kmemleak_ignore(const void *ptr) __ref; extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref; extern void kmemleak_no_scan(const void *ptr) __ref; +extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size, int min_count, + gfp_t gfp) __ref; +extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref; +extern void kmemleak_not_leak_phys(phys_addr_t phys) __ref; +extern void kmemleak_ignore_phys(phys_addr_t phys) __ref; static inline void kmemleak_alloc_recursive(const void *ptr, size_t size, int min_count, unsigned long flags, @@ -106,6 +111,19 @@ static inline void kmemleak_erase(void **ptr) static inline void kmemleak_no_scan(const void *ptr) { } +static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size, + int min_count, gfp_t gfp) +{ +} +static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size) +{ +} +static inline void kmemleak_not_leak_phys(phys_addr_t phys) +{ +} +static inline void kmemleak_ignore_phys(phys_addr_t phys) +{ +} #endif /* CONFIG_DEBUG_KMEMLEAK */ diff --git a/include/linux/kthread.h b/include/linux/kthread.h index e691b6a23f72..a6e82a69c363 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -10,6 +10,17 @@ struct task_struct *kthread_create_on_node(int (*threadfn)(void *data), int node, const char namefmt[], ...); +/** + * kthread_create - create a kthread on the current node + * @threadfn: the function to run in the thread + * @data: data pointer for @threadfn() + * @namefmt: printf-style format string for the thread name + * @...: arguments for @namefmt. + * + * This macro will create a kthread on the current node, leaving it in + * the stopped state. This is just a helper for kthread_create_on_node(); + * see the documentation there for more details. + */ #define kthread_create(threadfn, data, namefmt, arg...) \ kthread_create_on_node(threadfn, data, NUMA_NO_NODE, namefmt, ##arg) @@ -44,7 +55,7 @@ bool kthread_should_stop(void); bool kthread_should_park(void); bool kthread_freezable_should_stop(bool *was_frozen); void *kthread_data(struct task_struct *k); -void *probe_kthread_data(struct task_struct *k); +void *kthread_probe_data(struct task_struct *k); int kthread_park(struct task_struct *k); void kthread_unpark(struct task_struct *k); void kthread_parkme(void); @@ -57,16 +68,23 @@ extern int tsk_fork_get_node(struct task_struct *tsk); * Simple work processor based on kthread. * * This provides easier way to make use of kthreads. A kthread_work - * can be queued and flushed using queue/flush_kthread_work() + * can be queued and flushed using queue/kthread_flush_work() * respectively. Queued kthread_works are processed by a kthread * running kthread_worker_fn(). */ struct kthread_work; typedef void (*kthread_work_func_t)(struct kthread_work *work); +void kthread_delayed_work_timer_fn(unsigned long __data); + +enum { + KTW_FREEZABLE = 1 << 0, /* freeze during suspend */ +}; struct kthread_worker { + unsigned int flags; spinlock_t lock; struct list_head work_list; + struct list_head delayed_work_list; struct task_struct *task; struct kthread_work *current_work; }; @@ -75,11 +93,19 @@ struct kthread_work { struct list_head node; kthread_work_func_t func; struct kthread_worker *worker; + /* Number of canceling calls that are running at the moment. */ + int canceling; +}; + +struct kthread_delayed_work { + struct kthread_work work; + struct timer_list timer; }; #define KTHREAD_WORKER_INIT(worker) { \ .lock = __SPIN_LOCK_UNLOCKED((worker).lock), \ .work_list = LIST_HEAD_INIT((worker).work_list), \ + .delayed_work_list = LIST_HEAD_INIT((worker).delayed_work_list),\ } #define KTHREAD_WORK_INIT(work, fn) { \ @@ -87,46 +113,88 @@ struct kthread_work { .func = (fn), \ } +#define KTHREAD_DELAYED_WORK_INIT(dwork, fn) { \ + .work = KTHREAD_WORK_INIT((dwork).work, (fn)), \ + .timer = __TIMER_INITIALIZER(kthread_delayed_work_timer_fn, \ + 0, (unsigned long)&(dwork), \ + TIMER_IRQSAFE), \ + } + #define DEFINE_KTHREAD_WORKER(worker) \ struct kthread_worker worker = KTHREAD_WORKER_INIT(worker) #define DEFINE_KTHREAD_WORK(work, fn) \ struct kthread_work work = KTHREAD_WORK_INIT(work, fn) +#define DEFINE_KTHREAD_DELAYED_WORK(dwork, fn) \ + struct kthread_delayed_work dwork = \ + KTHREAD_DELAYED_WORK_INIT(dwork, fn) + /* * kthread_worker.lock needs its own lockdep class key when defined on * stack with lockdep enabled. Use the following macros in such cases. */ #ifdef CONFIG_LOCKDEP # define KTHREAD_WORKER_INIT_ONSTACK(worker) \ - ({ init_kthread_worker(&worker); worker; }) + ({ kthread_init_worker(&worker); worker; }) # define DEFINE_KTHREAD_WORKER_ONSTACK(worker) \ struct kthread_worker worker = KTHREAD_WORKER_INIT_ONSTACK(worker) #else # define DEFINE_KTHREAD_WORKER_ONSTACK(worker) DEFINE_KTHREAD_WORKER(worker) #endif -extern void __init_kthread_worker(struct kthread_worker *worker, +extern void __kthread_init_worker(struct kthread_worker *worker, const char *name, struct lock_class_key *key); -#define init_kthread_worker(worker) \ +#define kthread_init_worker(worker) \ do { \ static struct lock_class_key __key; \ - __init_kthread_worker((worker), "("#worker")->lock", &__key); \ + __kthread_init_worker((worker), "("#worker")->lock", &__key); \ } while (0) -#define init_kthread_work(work, fn) \ +#define kthread_init_work(work, fn) \ do { \ memset((work), 0, sizeof(struct kthread_work)); \ INIT_LIST_HEAD(&(work)->node); \ (work)->func = (fn); \ } while (0) +#define kthread_init_delayed_work(dwork, fn) \ + do { \ + kthread_init_work(&(dwork)->work, (fn)); \ + __setup_timer(&(dwork)->timer, \ + kthread_delayed_work_timer_fn, \ + (unsigned long)(dwork), \ + TIMER_IRQSAFE); \ + } while (0) + int kthread_worker_fn(void *worker_ptr); -bool queue_kthread_work(struct kthread_worker *worker, +__printf(2, 3) +struct kthread_worker * +kthread_create_worker(unsigned int flags, const char namefmt[], ...); + +struct kthread_worker * +kthread_create_worker_on_cpu(int cpu, unsigned int flags, + const char namefmt[], ...); + +bool kthread_queue_work(struct kthread_worker *worker, struct kthread_work *work); -void flush_kthread_work(struct kthread_work *work); -void flush_kthread_worker(struct kthread_worker *worker); + +bool kthread_queue_delayed_work(struct kthread_worker *worker, + struct kthread_delayed_work *dwork, + unsigned long delay); + +bool kthread_mod_delayed_work(struct kthread_worker *worker, + struct kthread_delayed_work *dwork, + unsigned long delay); + +void kthread_flush_work(struct kthread_work *work); +void kthread_flush_worker(struct kthread_worker *worker); + +bool kthread_cancel_work_sync(struct kthread_work *work); +bool kthread_cancel_delayed_work_sync(struct kthread_delayed_work *work); + +void kthread_destroy_worker(struct kthread_worker *worker); #endif /* _LINUX_KTHREAD_H */ diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 747f401cc312..dd15d39e1985 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -16,17 +16,16 @@ #include <linux/hugetlb_inline.h> /* - * Bits in mapping->flags. The lower __GFP_BITS_SHIFT bits are the page - * allocation mode flags. + * Bits in mapping->flags. */ enum mapping_flags { - AS_EIO = __GFP_BITS_SHIFT + 0, /* IO error on async write */ - AS_ENOSPC = __GFP_BITS_SHIFT + 1, /* ENOSPC on async write */ - AS_MM_ALL_LOCKS = __GFP_BITS_SHIFT + 2, /* under mm_take_all_locks() */ - AS_UNEVICTABLE = __GFP_BITS_SHIFT + 3, /* e.g., ramdisk, SHM_LOCK */ - AS_EXITING = __GFP_BITS_SHIFT + 4, /* final truncate in progress */ + AS_EIO = 0, /* IO error on async write */ + AS_ENOSPC = 1, /* ENOSPC on async write */ + AS_MM_ALL_LOCKS = 2, /* under mm_take_all_locks() */ + AS_UNEVICTABLE = 3, /* e.g., ramdisk, SHM_LOCK */ + AS_EXITING = 4, /* final truncate in progress */ /* writeback related tags are not used */ - AS_NO_WRITEBACK_TAGS = __GFP_BITS_SHIFT + 5, + AS_NO_WRITEBACK_TAGS = 5, }; static inline void mapping_set_error(struct address_space *mapping, int error) @@ -78,7 +77,7 @@ static inline int mapping_use_writeback_tags(struct address_space *mapping) static inline gfp_t mapping_gfp_mask(struct address_space * mapping) { - return (__force gfp_t)mapping->flags & __GFP_BITS_MASK; + return mapping->gfp_mask; } /* Restricts the given gfp_mask to what the mapping allows. */ @@ -94,8 +93,7 @@ static inline gfp_t mapping_gfp_constraint(struct address_space *mapping, */ static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask) { - m->flags = (m->flags & ~(__force unsigned long)__GFP_BITS_MASK) | - (__force unsigned long)mask; + m->gfp_mask = mask; } void release_pages(struct page **pages, int nr, bool cold); diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index 52b97db93830..af3581b8a451 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -461,6 +461,14 @@ static inline struct radix_tree_node *entry_to_node(void *ptr) * * This function updates @iter->index in the case of a successful lookup. * For tagged lookup it also eats @iter->tags. + * + * There are several cases where 'slot' can be passed in as NULL to this + * function. These cases result from the use of radix_tree_iter_next() or + * radix_tree_iter_retry(). In these cases we don't end up dereferencing + * 'slot' because either: + * a) we are doing tagged iteration and iter->tags has been set to 0, or + * b) we are doing non-tagged iteration, and iter->index and iter->next_index + * have been set up so that radix_tree_chunk_size() returns 1 or 0. */ static __always_inline void ** radix_tree_next_slot(void **slot, struct radix_tree_iter *iter, unsigned flags) diff --git a/include/linux/random.h b/include/linux/random.h index 3d6e9815cd85..f7bb7a355cf7 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -34,7 +34,7 @@ extern const struct file_operations random_fops, urandom_fops; unsigned int get_random_int(void); unsigned long get_random_long(void); -unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len); +unsigned long randomize_page(unsigned long start, unsigned long range); u32 prandom_u32(void); void prandom_bytes(void *buf, size_t nbytes); diff --git a/include/linux/relay.h b/include/linux/relay.h index ecbb34a382b8..68c1448e56bb 100644 --- a/include/linux/relay.h +++ b/include/linux/relay.h @@ -15,6 +15,7 @@ #include <linux/timer.h> #include <linux/wait.h> #include <linux/list.h> +#include <linux/irq_work.h> #include <linux/bug.h> #include <linux/fs.h> #include <linux/poll.h> @@ -38,7 +39,7 @@ struct rchan_buf size_t subbufs_consumed; /* count of sub-buffers consumed */ struct rchan *chan; /* associated channel */ wait_queue_head_t read_wait; /* reader wait queue */ - struct timer_list timer; /* reader wake-up timer */ + struct irq_work wakeup_work; /* reader wakeup */ struct dentry *dentry; /* channel file dentry */ struct kref kref; /* channel buffer refcount */ struct page **page_array; /* array of current buffer pages */ diff --git a/include/linux/sem.h b/include/linux/sem.h index 976ce3a19f1b..d0efd6e6c20a 100644 --- a/include/linux/sem.h +++ b/include/linux/sem.h @@ -21,6 +21,7 @@ struct sem_array { struct list_head list_id; /* undo requests on this array */ int sem_nsems; /* no. of semaphores in array */ int complex_count; /* pending complex operations */ + bool complex_mode; /* no parallel simple ops */ }; #ifdef CONFIG_SYSVIPC diff --git a/include/uapi/linux/auto_dev-ioctl.h b/include/uapi/linux/auto_dev-ioctl.h new file mode 100644 index 000000000000..021ed331dd71 --- /dev/null +++ b/include/uapi/linux/auto_dev-ioctl.h @@ -0,0 +1,221 @@ +/* + * Copyright 2008 Red Hat, Inc. All rights reserved. + * Copyright 2008 Ian Kent <raven@themaw.net> + * + * This file is part of the Linux kernel and is made available under + * the terms of the GNU General Public License, version 2, or at your + * option, any later version, incorporated herein by reference. + */ + +#ifndef _UAPI_LINUX_AUTO_DEV_IOCTL_H +#define _UAPI_LINUX_AUTO_DEV_IOCTL_H + +#include <linux/auto_fs.h> +#include <linux/string.h> + +#define AUTOFS_DEVICE_NAME "autofs" + +#define AUTOFS_DEV_IOCTL_VERSION_MAJOR 1 +#define AUTOFS_DEV_IOCTL_VERSION_MINOR 0 + +#define AUTOFS_DEV_IOCTL_SIZE sizeof(struct autofs_dev_ioctl) + +/* + * An ioctl interface for autofs mount point control. + */ + +struct args_protover { + __u32 version; +}; + +struct args_protosubver { + __u32 sub_version; +}; + +struct args_openmount { + __u32 devid; +}; + +struct args_ready { + __u32 token; +}; + +struct args_fail { + __u32 token; + __s32 status; +}; + +struct args_setpipefd { + __s32 pipefd; +}; + +struct args_timeout { + __u64 timeout; +}; + +struct args_requester { + __u32 uid; + __u32 gid; +}; + +struct args_expire { + __u32 how; +}; + +struct args_askumount { + __u32 may_umount; +}; + +struct args_ismountpoint { + union { + struct args_in { + __u32 type; + } in; + struct args_out { + __u32 devid; + __u32 magic; + } out; + }; +}; + +/* + * All the ioctls use this structure. + * When sending a path size must account for the total length + * of the chunk of memory otherwise is is the size of the + * structure. + */ + +struct autofs_dev_ioctl { + __u32 ver_major; + __u32 ver_minor; + __u32 size; /* total size of data passed in + * including this struct */ + __s32 ioctlfd; /* automount command fd */ + + /* Command parameters */ + + union { + struct args_protover protover; + struct args_protosubver protosubver; + struct args_openmount openmount; + struct args_ready ready; + struct args_fail fail; + struct args_setpipefd setpipefd; + struct args_timeout timeout; + struct args_requester requester; + struct args_expire expire; + struct args_askumount askumount; + struct args_ismountpoint ismountpoint; + }; + + char path[0]; +}; + +static inline void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in) +{ + memset(in, 0, sizeof(struct autofs_dev_ioctl)); + in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR; + in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR; + in->size = sizeof(struct autofs_dev_ioctl); + in->ioctlfd = -1; +} + +/* + * If you change this make sure you make the corresponding change + * to autofs-dev-ioctl.c:lookup_ioctl() + */ +enum { + /* Get various version info */ + AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71, + AUTOFS_DEV_IOCTL_PROTOVER_CMD, + AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, + + /* Open mount ioctl fd */ + AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, + + /* Close mount ioctl fd */ + AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, + + /* Mount/expire status returns */ + AUTOFS_DEV_IOCTL_READY_CMD, + AUTOFS_DEV_IOCTL_FAIL_CMD, + + /* Activate/deactivate autofs mount */ + AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, + AUTOFS_DEV_IOCTL_CATATONIC_CMD, + + /* Expiry timeout */ + AUTOFS_DEV_IOCTL_TIMEOUT_CMD, + + /* Get mount last requesting uid and gid */ + AUTOFS_DEV_IOCTL_REQUESTER_CMD, + + /* Check for eligible expire candidates */ + AUTOFS_DEV_IOCTL_EXPIRE_CMD, + + /* Request busy status */ + AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, + + /* Check if path is a mountpoint */ + AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, +}; + +#define AUTOFS_IOCTL 0x93 + +#define AUTOFS_DEV_IOCTL_VERSION \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_PROTOVER \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_PROTOSUBVER \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_OPENMOUNT \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_CLOSEMOUNT \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_READY \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_FAIL \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_SETPIPEFD \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_CATATONIC \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_TIMEOUT \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_REQUESTER \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_EXPIRE \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_ASKUMOUNT \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl) + +#define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \ + _IOWR(AUTOFS_IOCTL, \ + AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl) + +#endif /* _UAPI_LINUX_AUTO_DEV_IOCTL_H */ diff --git a/include/uapi/linux/auto_fs.h b/include/uapi/linux/auto_fs.h index 9175a1b4dc69..1bfc3ed8b284 100644 --- a/include/uapi/linux/auto_fs.h +++ b/include/uapi/linux/auto_fs.h @@ -12,6 +12,7 @@ #define _UAPI_LINUX_AUTO_FS_H #include <linux/types.h> +#include <linux/limits.h> #ifndef __KERNEL__ #include <sys/ioctl.h> #endif /* __KERNEL__ */ |