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Commit 408afb8d authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 

Pull aio updates from Al Viro:
 "Majority of AIO stuff this cycle. aio-fsync and aio-poll, mostly.

  The only thing I'm holding back for a day or so is Adam's aio ioprio -
  his last-minute fixup is trivial (missing stub in !CONFIG_BLOCK case),
  but let it sit in -next for decency sake..."

* 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits)
  aio: sanitize the limit checking in io_submit(2)
  aio: fold do_io_submit() into callers
  aio: shift copyin of iocb into io_submit_one()
  aio_read_events_ring(): make a bit more readable
  aio: all callers of aio_{read,write,fsync,poll} treat 0 and -EIOCBQUEUED the same way
  aio: take list removal to (some) callers of aio_complete()
  aio: add missing break for the IOCB_CMD_FDSYNC case
  random: convert to ->poll_mask
  timerfd: convert to ->poll_mask
  eventfd: switch to ->poll_mask
  pipe: convert to ->poll_mask
  crypto: af_alg: convert to ->poll_mask
  net/rxrpc: convert to ->poll_mask
  net/iucv: convert to ->poll_mask
  net/phonet: convert to ->poll_mask
  net/nfc: convert to ->poll_mask
  net/caif: convert to ->poll_mask
  net/bluetooth: convert to ->poll_mask
  net/sctp: convert to ->poll_mask
  net/tipc: convert to ->poll_mask
  ...
parents b058efc1 1da92779

Documentation/filesystems/Locking

+7 −2
Original line number Diff line number Diff line
@@ -440,7 +440,9 @@ prototypes: 
	ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);

	int (*iterate) (struct file *, struct dir_context *);

	int (*iterate_shared) (struct file *, struct dir_context *);

	unsigned int (*poll) (struct file *, struct poll_table_struct *);

	__poll_t (*poll) (struct file *, struct poll_table_struct *);

	struct wait_queue_head * (*get_poll_head)(struct file *, __poll_t);

	__poll_t (*poll_mask) (struct file *, __poll_t);

	long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);

	long (*compat_ioctl) (struct file *, unsigned int, unsigned long);

	int (*mmap) (struct file *, struct vm_area_struct *);
@@ -471,7 +473,7 @@ prototypes: 
};



locking rules:

	All may block.

	All except for ->poll_mask may block.



->llseek() locking has moved from llseek to the individual llseek

implementations.  If your fs is not using generic_file_llseek, you
@@ -503,6 +505,9 @@ in sys_read() and friends. 
the lease within the individual filesystem to record the result of the

operation



->poll_mask can be called with or without the waitqueue lock for the waitqueue

returned from ->get_poll_head.



--------------------------- dquot_operations -------------------------------

prototypes:

	int (*write_dquot) (struct dquot *);

Documentation/filesystems/vfs.txt

+14 −1
Original line number Diff line number Diff line
@@ -856,7 +856,9 @@ struct file_operations { 
	ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);

	ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);

	int (*iterate) (struct file *, struct dir_context *);

	unsigned int (*poll) (struct file *, struct poll_table_struct *);

	__poll_t (*poll) (struct file *, struct poll_table_struct *);

	struct wait_queue_head * (*get_poll_head)(struct file *, __poll_t);

	__poll_t (*poll_mask) (struct file *, __poll_t);

	long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);

	long (*compat_ioctl) (struct file *, unsigned int, unsigned long);

	int (*mmap) (struct file *, struct vm_area_struct *);
@@ -901,6 +903,17 @@ otherwise noted. 
	activity on this file and (optionally) go to sleep until there

	is activity. Called by the select(2) and poll(2) system calls



  get_poll_head: Returns the struct wait_queue_head that callers can

  wait on.  Callers need to check the returned events using ->poll_mask

  once woken.  Can return NULL to indicate polling is not supported,

  or any error code using the ERR_PTR convention to indicate that a

  grave error occured and ->poll_mask shall not be called.



  poll_mask: return the mask of EPOLL* values describing the file descriptor

  state.  Called either before going to sleep on the waitqueue returned by

  get_poll_head, or after it has been woken.  If ->get_poll_head and

  ->poll_mask are implemented ->poll does not need to be implement.



  unlocked_ioctl: called by the ioctl(2) system call.



  compat_ioctl: called by the ioctl(2) system call when 32 bit system calls

arch/x86/entry/syscalls/syscall_32.tbl

+1 −0
Original line number Diff line number Diff line
@@ -396,3 +396,4 @@ 
382	i386	pkey_free		sys_pkey_free			__ia32_sys_pkey_free

383	i386	statx			sys_statx			__ia32_sys_statx

384	i386	arch_prctl		sys_arch_prctl			__ia32_compat_sys_arch_prctl

385	i386	io_pgetevents		sys_io_pgetevents		__ia32_compat_sys_io_pgetevents

arch/x86/entry/syscalls/syscall_64.tbl

+1 −0
Original line number Diff line number Diff line
@@ -341,6 +341,7 @@ 
330	common	pkey_alloc		__x64_sys_pkey_alloc

331	common	pkey_free		__x64_sys_pkey_free

332	common	statx			__x64_sys_statx

333	common	io_pgetevents		__x64_sys_io_pgetevents



#

# x32-specific system call numbers start at 512 to avoid cache impact

crypto/af_alg.c

+3 −11
Original line number Diff line number Diff line
@@ -347,7 +347,6 @@ static const struct proto_ops alg_proto_ops = { 
	.sendpage	=	sock_no_sendpage,

	.sendmsg	=	sock_no_sendmsg,

	.recvmsg	=	sock_no_recvmsg,

	.poll		=	sock_no_poll,



	.bind		=	alg_bind,

	.release	=	af_alg_release,
@@ -1061,19 +1060,12 @@ void af_alg_async_cb(struct crypto_async_request *_req, int err) 
}

EXPORT_SYMBOL_GPL(af_alg_async_cb);



/**

 * af_alg_poll - poll system call handler

 */

__poll_t af_alg_poll(struct file *file, struct socket *sock,

			 poll_table *wait)

__poll_t af_alg_poll_mask(struct socket *sock, __poll_t events)

{

	struct sock *sk = sock->sk;

	struct alg_sock *ask = alg_sk(sk);

	struct af_alg_ctx *ctx = ask->private;

	__poll_t mask;



	sock_poll_wait(file, sk_sleep(sk), wait);

	mask = 0;

	__poll_t mask = 0;



	if (!ctx->more || ctx->used)

		mask |= EPOLLIN | EPOLLRDNORM;
@@ -1083,7 +1075,7 @@ __poll_t af_alg_poll(struct file *file, struct socket *sock, 


	return mask;

}

EXPORT_SYMBOL_GPL(af_alg_poll);

EXPORT_SYMBOL_GPL(af_alg_poll_mask);



/**

 * af_alg_alloc_areq - allocate struct af_alg_async_req