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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-17 15:05:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-17 15:05:23 -0700
commitc2e7b207058d4ff6a9010430763fb561f307eb67 (patch)
tree8983947c4d62365de3d98113662ff9e643a42a0f /fs/nfs/direct.c
parentc52b76185b7a1b300e5f15ff871c8f45ced3dee9 (diff)
parent24368aad47dc65b45040d6a31bfd6df1d6f3ec97 (diff)
downloadlinux-c2e7b207058d4ff6a9010430763fb561f307eb67.tar.bz2
Merge branch 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs cleanups from Al Viro: "More cleanups from Christoph" * 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: nfsd: use RWF_SYNC fs: add RWF_DSYNC aand RWF_SYNC ceph: use generic_write_sync fs: simplify the generic_write_sync prototype fs: add IOCB_SYNC and IOCB_DSYNC direct-io: remove the offset argument to dio_complete direct-io: eliminate the offset argument to ->direct_IO xfs: eliminate the pos variable in xfs_file_dio_aio_write filemap: remove the pos argument to generic_file_direct_write filemap: remove pos variables in generic_file_read_iter
Diffstat (limited to 'fs/nfs/direct.c')
-rw-r--r--fs/nfs/direct.c21
1 files changed, 10 insertions, 11 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 438d4e70742f..741a92c470bb 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -250,7 +250,7 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq,
* shunt off direct read and write requests before the VFS gets them,
* so this method is only ever called for swap.
*/
-ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
+ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct inode *inode = iocb->ki_filp->f_mapping->host;
@@ -261,7 +261,7 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
VM_BUG_ON(iov_iter_count(iter) != PAGE_SIZE);
if (iov_iter_rw(iter) == READ)
- return nfs_file_direct_read(iocb, iter, pos);
+ return nfs_file_direct_read(iocb, iter);
return nfs_file_direct_write(iocb, iter);
}
@@ -545,7 +545,6 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
* nfs_file_direct_read - file direct read operation for NFS files
* @iocb: target I/O control block
* @iter: vector of user buffers into which to read data
- * @pos: byte offset in file where reading starts
*
* We use this function for direct reads instead of calling
* generic_file_aio_read() in order to avoid gfar's check to see if
@@ -561,8 +560,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
* client must read the updated atime from the server back into its
* cache.
*/
-ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
- loff_t pos)
+ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
@@ -574,7 +572,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
nfs_add_stats(mapping->host, NFSIOS_DIRECTREADBYTES, count);
dfprintk(FILE, "NFS: direct read(%pD2, %zd@%Ld)\n",
- file, count, (long long) pos);
+ file, count, (long long) iocb->ki_pos);
result = 0;
if (!count)
@@ -594,7 +592,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
dreq->inode = inode;
dreq->bytes_left = count;
- dreq->io_start = pos;
+ dreq->io_start = iocb->ki_pos;
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
l_ctx = nfs_get_lock_context(dreq->ctx);
if (IS_ERR(l_ctx)) {
@@ -606,14 +604,14 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
dreq->iocb = iocb;
NFS_I(inode)->read_io += count;
- result = nfs_direct_read_schedule_iovec(dreq, iter, pos);
+ result = nfs_direct_read_schedule_iovec(dreq, iter, iocb->ki_pos);
inode_unlock(inode);
if (!result) {
result = nfs_direct_wait(dreq);
if (result > 0)
- iocb->ki_pos = pos + result;
+ iocb->ki_pos += result;
}
nfs_direct_req_release(dreq);
@@ -969,7 +967,6 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
* nfs_file_direct_write - file direct write operation for NFS files
* @iocb: target I/O control block
* @iter: vector of user buffers from which to write data
- * @pos: byte offset in file where writing starts
*
* We use this function for direct writes instead of calling
* generic_file_aio_write() in order to avoid taking the inode
@@ -1057,7 +1054,9 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter)
if (i_size_read(inode) < iocb->ki_pos)
i_size_write(inode, iocb->ki_pos);
spin_unlock(&inode->i_lock);
- generic_write_sync(file, pos, result);
+
+ /* XXX: should check the generic_write_sync retval */
+ generic_write_sync(iocb, result);
}
}
nfs_direct_req_release(dreq);