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Message-Id: <16009f67c954bb645848d55d75a2601023604055.1426502566.git.osandov@osandov.com>
Date: Mon, 16 Mar 2015 04:33:50 -0700
From: Omar Sandoval <osandov@...ndov.com>
To: Alexander Viro <viro@...iv.linux.org.uk>,
linux-fsdevel@...r.kernel.org, linux-btrfs@...r.kernel.org,
ceph-devel@...r.kernel.org, linux-cifs@...r.kernel.org,
osd-dev@...n-osd.org, linux-ext4@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net,
fuse-devel@...ts.sourceforge.net, cluster-devel@...hat.com,
jfs-discussion@...ts.sourceforge.net, HPDD-discuss@...ts.01.org,
linux-nfs@...r.kernel.org, linux-nilfs@...r.kernel.org,
ocfs2-devel@....oracle.com, reiserfs-devel@...r.kernel.org,
v9fs-developer@...ts.sourceforge.net, xfs@....sgi.com
Cc: linux-kernel@...r.kernel.org, Chris Mason <clm@...com>,
Josef Bacik <jbacik@...com>, David Sterba <dsterba@...e.cz>,
"Yan Zheng" <zyan@...hat.com>, Sage Weil <sage@...hat.com>,
Steve French <sfrench@...ba.org>,
Boaz Harrosh <ooo@...ctrozaur.com>,
Benny Halevy <bhalevy@...marydata.com>,
Jan Kara <jack@...e.cz>, "Theodore Ts'o" <tytso@....edu>,
Andreas Dilger <adilger.kernel@...ger.ca>,
Jaegeuk Kim <jaegeuk@...nel.org>,
Changman Lee <cm224.lee@...sung.com>,
Miklos Szeredi <miklos@...redi.hu>,
Steven Whitehouse <swhiteho@...hat.com>,
Dave Kleikamp <shaggy@...nel.org>,
Oleg Drokin <oleg.drokin@...el.com>,
Trond Myklebust <trond.myklebust@...marydata.com>,
Anna Schumaker <anna.schumaker@...app.com>,
Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>,
Mark Fasheh <mfasheh@...e.com>,
Joel Becker <jlbec@...lplan.org>,
Eric Van Hensbergen <ericvh@...il.com>,
Ron Minnich <rminnich@...dia.gov>,
Latchesar Ionkov <lucho@...kov.net>,
Dave Chinner <david@...morbit.com>,
Omar Sandoval <osandov@...ndov.com>
Subject: [RFC PATCH 2/5] Remove rw from {,__,do_}blockdev_direct_IO()
Most filesystems call through to these at some point, so we'll start
here.
Signed-off-by: Omar Sandoval <osandov@...ndov.com>
---
fs/affs/file.c | 2 +-
fs/block_dev.c | 5 ++---
fs/btrfs/inode.c | 8 ++++----
fs/direct-io.c | 39 ++++++++++++++++++---------------------
fs/ext2/inode.c | 2 +-
fs/ext3/inode.c | 2 +-
fs/ext4/indirect.c | 11 ++++++-----
fs/ext4/inode.c | 2 +-
fs/f2fs/data.c | 2 +-
fs/fat/inode.c | 2 +-
fs/gfs2/aops.c | 5 ++---
fs/hfs/inode.c | 2 +-
fs/hfsplus/inode.c | 3 +--
fs/jfs/inode.c | 2 +-
fs/nilfs2/inode.c | 3 +--
fs/ocfs2/aops.c | 16 +++++++---------
fs/reiserfs/inode.c | 2 +-
fs/udf/inode.c | 2 +-
fs/xfs/xfs_aops.c | 9 ++++-----
include/linux/fs.h | 22 ++++++++++++----------
20 files changed, 67 insertions(+), 74 deletions(-)
diff --git a/fs/affs/file.c b/fs/affs/file.c
index d2468bf..f3028aa 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -405,7 +405,7 @@ affs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
return 0;
}
- ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, affs_get_block);
+ ret = blockdev_direct_IO(iocb, inode, iter, offset, affs_get_block);
if (ret < 0 && (rw & WRITE))
affs_write_failed(mapping, offset + count);
return ret;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 975266b..e3a3125 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -153,9 +153,8 @@ blkdev_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
- return __blockdev_direct_IO(rw, iocb, inode, I_BDEV(inode), iter,
- offset, blkdev_get_block,
- NULL, NULL, 0);
+ return __blockdev_direct_IO(iocb, inode, I_BDEV(inode), iter, offset,
+ blkdev_get_block, NULL, NULL, 0);
}
int __sync_blockdev(struct block_device *bdev, int wait)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index da828cf..d6413f4 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8119,10 +8119,10 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb,
wakeup = false;
}
- ret = __blockdev_direct_IO(rw, iocb, inode,
- BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev,
- iter, offset, btrfs_get_blocks_direct, NULL,
- btrfs_submit_direct, flags);
+ ret = __blockdev_direct_IO(iocb, inode,
+ BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev,
+ iter, offset, btrfs_get_blocks_direct, NULL,
+ btrfs_submit_direct, flags);
if (rw & WRITE) {
if (ret < 0 && ret != -EIOCBQUEUED)
btrfs_delalloc_release_space(inode, count);
diff --git a/fs/direct-io.c b/fs/direct-io.c
index e181b6b..02a87d9 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -1094,10 +1094,10 @@ static inline int drop_refcount(struct dio *dio)
* for the whole file.
*/
static inline ssize_t
-do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
- struct block_device *bdev, struct iov_iter *iter, loff_t offset,
- get_block_t get_block, dio_iodone_t end_io,
- dio_submit_t submit_io, int flags)
+do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
+ struct block_device *bdev, struct iov_iter *iter,
+ loff_t offset, get_block_t get_block, dio_iodone_t end_io,
+ dio_submit_t submit_io, int flags)
{
unsigned i_blkbits = ACCESS_ONCE(inode->i_blkbits);
unsigned blkbits = i_blkbits;
@@ -1111,9 +1111,6 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
struct blk_plug plug;
unsigned long align = offset | iov_iter_alignment(iter);
- if (rw & WRITE)
- rw = WRITE_ODIRECT;
-
/*
* Avoid references to bdev if not absolutely needed to give
* the early prefetch in the caller enough time.
@@ -1128,7 +1125,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
}
/* watch out for a 0 len io from a tricksy fs */
- if (rw == READ && !iov_iter_count(iter))
+ if (iov_iter_rw(iter) == READ && !iov_iter_count(iter))
return 0;
dio = kmem_cache_alloc(dio_cache, GFP_KERNEL);
@@ -1144,7 +1141,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
dio->flags = flags;
if (dio->flags & DIO_LOCKING) {
- if (rw == READ) {
+ if (iov_iter_rw(iter) == READ) {
struct address_space *mapping =
iocb->ki_filp->f_mapping;
@@ -1170,19 +1167,19 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
if (is_sync_kiocb(iocb))
dio->is_async = false;
else if (!(dio->flags & DIO_ASYNC_EXTEND) &&
- (rw & WRITE) && end > i_size_read(inode))
+ iov_iter_rw(iter) == WRITE && end > i_size_read(inode))
dio->is_async = false;
else
dio->is_async = true;
dio->inode = inode;
- dio->rw = rw;
+ dio->rw = iov_iter_rw(iter) == WRITE ? WRITE_ODIRECT : READ;
/*
* For AIO O_(D)SYNC writes we need to defer completions to a workqueue
* so that we can call ->fsync.
*/
- if (dio->is_async && (rw & WRITE) &&
+ if (dio->is_async && iov_iter_rw(iter) == WRITE &&
((iocb->ki_filp->f_flags & O_DSYNC) ||
IS_SYNC(iocb->ki_filp->f_mapping->host))) {
retval = dio_set_defer_completion(dio);
@@ -1275,7 +1272,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
* we can let i_mutex go now that its achieved its purpose
* of protecting us from looking up uninitialized blocks.
*/
- if (rw == READ && (dio->flags & DIO_LOCKING))
+ if (iov_iter_rw(iter) == READ && (dio->flags & DIO_LOCKING))
mutex_unlock(&dio->inode->i_mutex);
/*
@@ -1287,7 +1284,7 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
*/
BUG_ON(retval == -EIOCBQUEUED);
if (dio->is_async && retval == 0 && dio->result &&
- (rw == READ || dio->result == count))
+ (iov_iter_rw(iter) == READ || dio->result == count))
retval = -EIOCBQUEUED;
else
dio_await_completion(dio);
@@ -1301,11 +1298,11 @@ out:
return retval;
}
-ssize_t
-__blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
- struct block_device *bdev, struct iov_iter *iter, loff_t offset,
- get_block_t get_block, dio_iodone_t end_io,
- dio_submit_t submit_io, int flags)
+ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
+ struct block_device *bdev, struct iov_iter *iter,
+ loff_t offset, get_block_t get_block,
+ dio_iodone_t end_io, dio_submit_t submit_io,
+ int flags)
{
/*
* The block device state is needed in the end to finally
@@ -1319,8 +1316,8 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
prefetch(bdev->bd_queue);
prefetch((char *)bdev->bd_queue + SMP_CACHE_BYTES);
- return do_blockdev_direct_IO(rw, iocb, inode, bdev, iter, offset,
- get_block, end_io, submit_io, flags);
+ return do_blockdev_direct_IO(iocb, inode, bdev, iter, offset, get_block,
+ end_io, submit_io, flags);
}
EXPORT_SYMBOL(__blockdev_direct_IO);
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 6434bc0..00979a6 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -864,7 +864,7 @@ ext2_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
ret = dax_do_io(rw, iocb, inode, iter, offset, ext2_get_block,
NULL, DIO_LOCKING);
else
- ret = blockdev_direct_IO(rw, iocb, inode, iter, offset,
+ ret = blockdev_direct_IO(iocb, inode, iter, offset,
ext2_get_block);
if (ret < 0 && (rw & WRITE))
ext2_write_failed(mapping, offset + count);
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 2c6ccc4..28bba7d 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1856,7 +1856,7 @@ static ssize_t ext3_direct_IO(int rw, struct kiocb *iocb,
}
retry:
- ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, ext3_get_block);
+ ret = blockdev_direct_IO(iocb, inode, iter, offset, 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/indirect.c b/fs/ext4/indirect.c
index 45fe924..57135a7 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -693,9 +693,10 @@ retry:
ret = dax_do_io(rw, iocb, inode, iter, offset,
ext4_get_block, NULL, 0);
else
- ret = __blockdev_direct_IO(rw, iocb, inode,
- inode->i_sb->s_bdev, iter, offset,
- ext4_get_block, NULL, NULL, 0);
+ ret = __blockdev_direct_IO(iocb, inode,
+ inode->i_sb->s_bdev, iter,
+ offset, ext4_get_block, NULL,
+ NULL, 0);
inode_dio_done(inode);
} else {
locked:
@@ -703,8 +704,8 @@ locked:
ret = dax_do_io(rw, iocb, inode, iter, offset,
ext4_get_block, NULL, DIO_LOCKING);
else
- ret = blockdev_direct_IO(rw, iocb, inode, iter,
- offset, ext4_get_block);
+ ret = blockdev_direct_IO(iocb, inode, iter, offset,
+ ext4_get_block);
if (unlikely((rw & WRITE) && ret < 0)) {
loff_t isize = i_size_read(inode);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 5cb9a21..81f8f10 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3038,7 +3038,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
ret = dax_do_io(rw, iocb, inode, iter, offset, get_block_func,
ext4_end_io_dio, dio_flags);
else
- ret = __blockdev_direct_IO(rw, iocb, inode,
+ ret = __blockdev_direct_IO(iocb, inode,
inode->i_sb->s_bdev, iter, offset,
get_block_func,
ext4_end_io_dio, NULL, dio_flags);
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 985ed02..d2addce 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1159,7 +1159,7 @@ static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb,
if (rw & WRITE)
__allocate_data_blocks(inode, offset, count);
- err = blockdev_direct_IO(rw, iocb, inode, iter, offset, get_data_block);
+ err = blockdev_direct_IO(iocb, inode, iter, offset, get_data_block);
if (err < 0 && (rw & WRITE))
f2fs_write_failed(mapping, offset + count);
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 497c7c5..a969a34 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -275,7 +275,7 @@ 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, iter, offset, fat_get_block);
+ ret = blockdev_direct_IO(iocb, inode, iter, offset, fat_get_block);
if (ret < 0 && (rw & WRITE))
fat_write_failed(mapping, offset + count);
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 4ad4f94..fc691f2 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -1095,9 +1095,8 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb,
truncate_inode_pages_range(mapping, lstart, end);
}
- rv = __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
- iter, offset,
- gfs2_get_block_direct, NULL, NULL, 0);
+ rv = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter,
+ offset, gfs2_get_block_direct, NULL, NULL, 0);
out:
gfs2_glock_dq(&gh);
gfs2_holder_uninit(&gh);
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index d0929bc..d367253 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -133,7 +133,7 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
size_t count = iov_iter_count(iter);
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, hfs_get_block);
+ ret = blockdev_direct_IO(iocb, inode, iter, offset, 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 0cf786f..a7ec37d 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -131,8 +131,7 @@ static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
size_t count = iov_iter_count(iter);
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, iter, offset,
- hfsplus_get_block);
+ ret = blockdev_direct_IO(iocb, inode, iter, offset, 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 bd3df1c..88271ac 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -339,7 +339,7 @@ static ssize_t jfs_direct_IO(int rw, struct kiocb *iocb,
size_t count = iov_iter_count(iter);
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, jfs_get_block);
+ ret = blockdev_direct_IO(iocb, inode, iter, offset, 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 8b59695..76587c3 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -318,8 +318,7 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
return 0;
/* Needs synchronization with the cleaner */
- size = blockdev_direct_IO(rw, iocb, inode, iter, offset,
- nilfs_get_block);
+ size = blockdev_direct_IO(iocb, inode, iter, offset, nilfs_get_block);
/*
* In case of error extending write may have instantiated a few
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 44db180..162a2a8 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -737,10 +737,9 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
di_bh = NULL;
}
- written = __blockdev_direct_IO(WRITE, iocb, inode, inode->i_sb->s_bdev,
- iter, offset,
- ocfs2_direct_IO_get_blocks,
- ocfs2_dio_end_io, NULL, 0);
+ written = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter,
+ offset, ocfs2_direct_IO_get_blocks,
+ ocfs2_dio_end_io, NULL, 0);
if (unlikely(written < 0)) {
loff_t i_size = i_size_read(inode);
@@ -843,11 +842,10 @@ static ssize_t ocfs2_direct_IO(int rw,
return 0;
if (rw == READ)
- return __blockdev_direct_IO(rw, iocb, inode,
- inode->i_sb->s_bdev,
- iter, offset,
- ocfs2_direct_IO_get_blocks,
- ocfs2_dio_end_io, NULL, 0);
+ return __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev,
+ iter, offset,
+ ocfs2_direct_IO_get_blocks,
+ ocfs2_dio_end_io, NULL, 0);
else
return ocfs2_direct_IO_write(iocb, iter, offset);
}
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index e72401e..254e800 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -3286,7 +3286,7 @@ static ssize_t reiserfs_direct_IO(int rw, struct kiocb *iocb,
size_t count = iov_iter_count(iter);
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, iter, offset,
+ ret = blockdev_direct_IO(iocb, inode, iter, offset,
reiserfs_get_blocks_direct_io);
/*
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index a445d59..bcb0082 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -225,7 +225,7 @@ static ssize_t udf_direct_IO(int rw, struct kiocb *iocb,
size_t count = iov_iter_count(iter);
ssize_t ret;
- ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, udf_get_block);
+ ret = blockdev_direct_IO(iocb, inode, iter, offset, udf_get_block);
if (unlikely(ret < 0 && (rw & WRITE)))
udf_write_failed(mapping, offset + count);
return ret;
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 3a9b7a1..fdb1353 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1505,14 +1505,13 @@ xfs_vm_direct_IO(
struct block_device *bdev = xfs_find_bdev_for_inode(inode);
if (rw & WRITE) {
- return __blockdev_direct_IO(rw, iocb, inode, bdev, iter,
- offset, xfs_get_blocks_direct,
+ return __blockdev_direct_IO(iocb, inode, bdev, iter, offset,
+ xfs_get_blocks_direct,
xfs_end_io_direct_write, NULL,
DIO_ASYNC_EXTEND);
}
- return __blockdev_direct_IO(rw, iocb, inode, bdev, iter,
- offset, xfs_get_blocks_direct,
- NULL, NULL, 0);
+ return __blockdev_direct_IO(iocb, inode, bdev, iter, offset,
+ xfs_get_blocks_direct, NULL, NULL, 0);
}
/*
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b4d71b5..ba1b580 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2616,16 +2616,18 @@ enum {
void dio_end_io(struct bio *bio, int error);
-ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
- struct block_device *bdev, struct iov_iter *iter, loff_t offset,
- get_block_t get_block, dio_iodone_t end_io,
- dio_submit_t submit_io, int flags);
-
-static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
- struct inode *inode, struct iov_iter *iter, loff_t offset,
- get_block_t get_block)
-{
- return __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iter,
+ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
+ struct block_device *bdev, struct iov_iter *iter,
+ loff_t offset, get_block_t get_block,
+ dio_iodone_t end_io, dio_submit_t submit_io,
+ int flags);
+
+static inline ssize_t blockdev_direct_IO(struct kiocb *iocb,
+ struct inode *inode,
+ struct iov_iter *iter, loff_t offset,
+ get_block_t get_block)
+{
+ return __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter,
offset, get_block, NULL, NULL,
DIO_LOCKING | DIO_SKIP_HOLES);
}
--
2.3.3
--
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