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->aio_read and ->aio_write removed

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro
Al Viro committed Apr 4, 2015
1 parent 1c65d98 commit 8436318205b9f29e45db88850ec60e326327e241
@@ -429,8 +429,6 @@ prototypes:
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
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 *);
@@ -480,3 +480,6 @@ in your dentry operations instead.
[mandatory]
do _not_ use new_sync_{read,write} for ->read/->write; leave it NULL
instead.
--
[mandatory]
->aio_read/->aio_write are gone. Use ->read_iter/->write_iter.
@@ -804,8 +804,6 @@ struct file_operations {
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
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 *);
@@ -838,14 +836,10 @@ otherwise noted.
read: called by read(2) and related system calls
aio_read: vectored, possibly asynchronous read
read_iter: possibly asynchronous read with iov_iter as destination
write: called by write(2) and related system calls
aio_write: vectored, possibly asynchronous write
write_iter: possibly asynchronous write with iov_iter as source
iterate: called when the VFS needs to read the directory contents
View
@@ -1347,8 +1347,6 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
return -EINVAL;
}
typedef ssize_t (aio_rw_op)(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
typedef ssize_t (rw_iter_op)(struct kiocb *, struct iov_iter *);
static int aio_setup_vectored_rw(int rw, char __user *buf, size_t len,
@@ -1377,7 +1375,6 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
ssize_t ret;
int rw;
fmode_t mode;
aio_rw_op *rw_op;
rw_iter_op *iter_op;
struct iovec inline_vecs[UIO_FASTIOV], *iovec = inline_vecs;
struct iov_iter iter;
@@ -1387,22 +1384,20 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
case IOCB_CMD_PREADV:
mode = FMODE_READ;
rw = READ;
rw_op = file->f_op->aio_read;
iter_op = file->f_op->read_iter;
goto rw_common;
case IOCB_CMD_PWRITE:
case IOCB_CMD_PWRITEV:
mode = FMODE_WRITE;
rw = WRITE;
rw_op = file->f_op->aio_write;
iter_op = file->f_op->write_iter;
goto rw_common;
rw_common:
if (unlikely(!(file->f_mode & mode)))
return -EBADF;
if (!rw_op && !iter_op)
if (!iter_op)
return -EINVAL;
if (opcode == IOCB_CMD_PREADV || opcode == IOCB_CMD_PWRITEV)
@@ -1425,11 +1420,7 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
if (rw == WRITE)
file_start_write(file);
if (iter_op) {
ret = iter_op(req, &iter);
} else {
ret = rw_op(req, iter.iov, iter.nr_segs, req->ki_pos);
}
ret = iter_op(req, &iter);
if (rw == WRITE)
file_end_write(file);
View
@@ -168,10 +168,10 @@ struct file *alloc_file(struct path *path, fmode_t mode,
file->f_inode = path->dentry->d_inode;
file->f_mapping = path->dentry->d_inode->i_mapping;
if ((mode & FMODE_READ) &&
likely(fop->read || fop->aio_read || fop->read_iter))
likely(fop->read || fop->read_iter))
mode |= FMODE_CAN_READ;
if ((mode & FMODE_WRITE) &&
likely(fop->write || fop->aio_write || fop->write_iter))
likely(fop->write || fop->write_iter))
mode |= FMODE_CAN_WRITE;
file->f_mode = mode;
file->f_op = fop;
View
@@ -734,10 +734,10 @@ static int do_dentry_open(struct file *f,
if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
i_readcount_inc(inode);
if ((f->f_mode & FMODE_READ) &&
likely(f->f_op->read || f->f_op->aio_read || f->f_op->read_iter))
likely(f->f_op->read || f->f_op->read_iter))
f->f_mode |= FMODE_CAN_READ;
if ((f->f_mode & FMODE_WRITE) &&
likely(f->f_op->write || f->f_op->aio_write || f->f_op->write_iter))
likely(f->f_op->write || f->f_op->write_iter))
f->f_mode |= FMODE_CAN_WRITE;
f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
View
@@ -22,8 +22,6 @@
#include <asm/unistd.h>
typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *);
typedef ssize_t (*iov_fn_t)(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
typedef ssize_t (*iter_fn_t)(struct kiocb *, struct iov_iter *);
const struct file_operations generic_ro_fops = {
@@ -668,21 +666,6 @@ static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter,
return ret;
}
static ssize_t do_sync_readv_writev(struct file *filp, struct iov_iter *iter,
loff_t *ppos, iov_fn_t fn)
{
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
ret = fn(&kiocb, iter->iov, iter->nr_segs, kiocb.ki_pos);
BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
/* Do it by hand, with file-ops */
static ssize_t do_loop_readv_writev(struct file *filp, struct iov_iter *iter,
loff_t *ppos, io_fn_t fn)
@@ -797,7 +780,6 @@ static ssize_t do_readv_writev(int type, struct file *file,
struct iov_iter iter;
ssize_t ret;
io_fn_t fn;
iov_fn_t fnv;
iter_fn_t iter_fn;
ret = import_iovec(type, uvector, nr_segs,
@@ -812,22 +794,17 @@ static ssize_t do_readv_writev(int type, struct file *file,
if (ret < 0)
goto out;
fnv = NULL;
if (type == READ) {
fn = file->f_op->read;
fnv = file->f_op->aio_read;
iter_fn = file->f_op->read_iter;
} else {
fn = (io_fn_t)file->f_op->write;
fnv = file->f_op->aio_write;
iter_fn = file->f_op->write_iter;
file_start_write(file);
}
if (iter_fn)
ret = do_iter_readv_writev(file, &iter, pos, iter_fn);
else if (fnv)
ret = do_sync_readv_writev(file, &iter, pos, fnv);
else
ret = do_loop_readv_writev(file, &iter, pos, fn);
@@ -977,7 +954,6 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
struct iov_iter iter;
ssize_t ret;
io_fn_t fn;
iov_fn_t fnv;
iter_fn_t iter_fn;
ret = compat_import_iovec(type, uvector, nr_segs,
@@ -992,22 +968,17 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
if (ret < 0)
goto out;
fnv = NULL;
if (type == READ) {
fn = file->f_op->read;
fnv = file->f_op->aio_read;
iter_fn = file->f_op->read_iter;
} else {
fn = (io_fn_t)file->f_op->write;
fnv = file->f_op->aio_write;
iter_fn = file->f_op->write_iter;
file_start_write(file);
}
if (iter_fn)
ret = do_iter_readv_writev(file, &iter, pos, iter_fn);
else if (fnv)
ret = do_sync_readv_writev(file, &iter, pos, fnv);
else
ret = do_loop_readv_writev(file, &iter, pos, fn);
View
@@ -1562,8 +1562,6 @@ struct file_operations {
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
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 *);

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