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Kirill Smelkov
linux
Commits
a886038b
Commit
a886038b
authored
Apr 02, 2014
by
Al Viro
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fs/block_dev.c: switch to ->read_iter()
Signed-off-by:
Al Viro
<
viro@zeniv.linux.org.uk
>
parent
2ba5bbed
Changes
1
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6 additions
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10 deletions
+6
-10
fs/block_dev.c
fs/block_dev.c
+6
-10
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fs/block_dev.c
View file @
a886038b
...
@@ -1532,23 +1532,19 @@ ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
...
@@ -1532,23 +1532,19 @@ ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
}
}
EXPORT_SYMBOL_GPL
(
blkdev_aio_write
);
EXPORT_SYMBOL_GPL
(
blkdev_aio_write
);
static
ssize_t
blkdev_aio_read
(
struct
kiocb
*
iocb
,
const
struct
iovec
*
iov
,
static
ssize_t
blkdev_read_iter
(
struct
kiocb
*
iocb
,
struct
iov_iter
*
to
)
unsigned
long
nr_segs
,
loff_t
pos
)
{
{
struct
file
*
file
=
iocb
->
ki_filp
;
struct
file
*
file
=
iocb
->
ki_filp
;
struct
inode
*
bd_inode
=
file
->
f_mapping
->
host
;
struct
inode
*
bd_inode
=
file
->
f_mapping
->
host
;
loff_t
size
=
i_size_read
(
bd_inode
);
loff_t
size
=
i_size_read
(
bd_inode
);
size_t
count
=
iocb
->
ki_nbytes
;
loff_t
pos
=
iocb
->
ki_pos
;
struct
iov_iter
to
;
iov_iter_init
(
&
to
,
READ
,
iov
,
nr_segs
,
count
);
if
(
pos
>=
size
)
if
(
pos
>=
size
)
return
0
;
return
0
;
size
-=
pos
;
size
-=
pos
;
iov_iter_truncate
(
&
to
,
size
);
iov_iter_truncate
(
to
,
size
);
return
generic_file_read_iter
(
iocb
,
&
to
);
return
generic_file_read_iter
(
iocb
,
to
);
}
}
/*
/*
...
@@ -1580,9 +1576,9 @@ const struct file_operations def_blk_fops = {
...
@@ -1580,9 +1576,9 @@ const struct file_operations def_blk_fops = {
.
open
=
blkdev_open
,
.
open
=
blkdev_open
,
.
release
=
blkdev_close
,
.
release
=
blkdev_close
,
.
llseek
=
block_llseek
,
.
llseek
=
block_llseek
,
.
read
=
do
_sync_read
,
.
read
=
new
_sync_read
,
.
write
=
do_sync_write
,
.
write
=
do_sync_write
,
.
aio_read
=
blkdev_aio_read
,
.
read_iter
=
blkdev_read_iter
,
.
aio_write
=
blkdev_aio_write
,
.
aio_write
=
blkdev_aio_write
,
.
mmap
=
generic_file_mmap
,
.
mmap
=
generic_file_mmap
,
.
fsync
=
blkdev_fsync
,
.
fsync
=
blkdev_fsync
,
...
...
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