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authorChristoph Hellwig <hch@infradead.org>2011-06-24 14:29:47 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 20:47:49 -0400
commitaacfc19c626ebd3daa675652457d71019a1f583f (patch)
tree9c1cfb5945e939f1ba56b4c0101c211e84e544c0
parentdf2d6f26586f12a24f3ae5df4e236dc5c08d6eb4 (diff)
downloadop-kernel-dev-aacfc19c626ebd3daa675652457d71019a1f583f.zip
op-kernel-dev-aacfc19c626ebd3daa675652457d71019a1f583f.tar.gz
fs: simplify the blockdev_direct_IO prototype
Simple filesystems always pass inode->i_sb_bdev as the block device argument, and never need a end_io handler. Let's simply things for them and for my grepping activity by dropping these arguments. The only thing not falling into that scheme is ext4, which passes and end_io handler without needing special flags (yet), but given how messy the direct I/O code there is use of __blockdev_direct_IO in one instead of two out of three cases isn't going to make a large difference anyway. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/ext2/inode.c4
-rw-r--r--fs/ext3/inode.c5
-rw-r--r--fs/ext4/inode.c12
-rw-r--r--fs/fat/inode.c4
-rw-r--r--fs/hfs/inode.c4
-rw-r--r--fs/hfsplus/inode.c4
-rw-r--r--fs/jfs/inode.c4
-rw-r--r--fs/nilfs2/inode.c4
-rw-r--r--fs/reiserfs/inode.c5
-rw-r--r--include/linux/fs.h9
10 files changed, 26 insertions, 29 deletions
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 06e7c76..a8a58f6 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -843,8 +843,8 @@ ext2_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
struct inode *inode = mapping->host;
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
- iov, offset, nr_segs, ext2_get_block, NULL);
+ ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
+ ext2_get_block);
if (ret < 0 && (rw & WRITE))
ext2_write_failed(mapping, offset + iov_length(iov, nr_segs));
return ret;
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 99c28b2..2978a2a 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1816,9 +1816,8 @@ static ssize_t ext3_direct_IO(int rw, struct kiocb *iocb,
}
retry:
- ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs,
- ext3_get_block, NULL);
+ ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
+ ext3_get_block);
/*
* In case of error extending write may have instantiated a few
* blocks outside i_size. Trim these off again.
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9ec0a2b..1f35573 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3501,10 +3501,8 @@ retry:
offset, nr_segs,
ext4_get_block, NULL, NULL, 0);
else {
- ret = blockdev_direct_IO(rw, iocb, inode,
- inode->i_sb->s_bdev, iov,
- offset, nr_segs,
- ext4_get_block, NULL);
+ ret = blockdev_direct_IO(rw, iocb, inode, iov,
+ offset, nr_segs, ext4_get_block);
if (unlikely((rw & WRITE) && ret < 0)) {
loff_t isize = i_size_read(inode);
@@ -3748,11 +3746,13 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
EXT4_I(inode)->cur_aio_dio = iocb->private;
}
- ret = blockdev_direct_IO(rw, iocb, inode,
+ ret = __blockdev_direct_IO(rw, iocb, inode,
inode->i_sb->s_bdev, iov,
offset, nr_segs,
ext4_get_block_write,
- ext4_end_io_dio);
+ ext4_end_io_dio,
+ NULL,
+ DIO_LOCKING | DIO_SKIP_HOLES);
if (iocb->private)
EXT4_I(inode)->cur_aio_dio = NULL;
/*
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 3decce4..5942fec 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -211,8 +211,8 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
* FAT need to use the DIO_LOCKING for avoiding the race
* condition of fat_get_block() and ->truncate().
*/
- ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
- iov, offset, nr_segs, fat_get_block, NULL);
+ ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
+ fat_get_block);
if (ret < 0 && (rw & WRITE))
fat_write_failed(mapping, offset + iov_length(iov, nr_segs));
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 48d567c..5e7c3f3 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -123,8 +123,8 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs, hfs_get_block, NULL);
+ ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
+ hfs_get_block);
/*
* In case of error extending write may have instantiated a few
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index b0a0a4b..5b1cb98 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -119,8 +119,8 @@ static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs, hfsplus_get_block, NULL);
+ ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
+ hfsplus_get_block);
/*
* In case of error extending write may have instantiated a few
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index 1096559..77b69b2 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -329,8 +329,8 @@ static ssize_t jfs_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode = file->f_mapping->host;
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs, jfs_get_block, NULL);
+ ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
+ jfs_get_block);
/*
* In case of error extending write may have instantiated a few
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 13f1131..666628b 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -259,8 +259,8 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
return 0;
/* Needs synchronization with the cleaner */
- size = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs, nilfs_get_block, NULL);
+ size = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
+ nilfs_get_block);
/*
* In case of error extending write may have instantiated a few
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index dcf543d..2922b90 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -3068,9 +3068,8 @@ static ssize_t reiserfs_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode = file->f_mapping->host;
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs,
- reiserfs_get_blocks_direct_io, NULL);
+ ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
+ reiserfs_get_blocks_direct_io);
/*
* In case of error extending write may have instantiated a few
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2fe9207..824453b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2418,12 +2418,11 @@ ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
dio_submit_t submit_io, int flags);
static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
- struct inode *inode, struct block_device *bdev, const struct iovec *iov,
- loff_t offset, unsigned long nr_segs, get_block_t get_block,
- dio_iodone_t end_io)
+ struct inode *inode, const struct iovec *iov, loff_t offset,
+ unsigned long nr_segs, get_block_t get_block)
{
- return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
- nr_segs, get_block, end_io, NULL,
+ return __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+ offset, nr_segs, get_block, NULL, NULL,
DIO_LOCKING | DIO_SKIP_HOLES);
}
#endif
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