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authorChristoph Hellwig <hch@lst.de>2021-01-23 21:06:09 +0300
committerDarrick J. Wong <djwong@kernel.org>2021-01-23 21:06:09 +0300
commit2f63296578cad1ae681152d5b2122a4595195f16 (patch)
tree26ec15d848996435a7ba37fa4b48e3892490603b /fs/iomap
parent5724be5de88f5f6863d44c859f42f70d5cc667ed (diff)
downloadlinux-2f63296578cad1ae681152d5b2122a4595195f16.tar.xz
iomap: pass a flags argument to iomap_dio_rw
Pass a set of flags to iomap_dio_rw instead of the boolean wait_for_completion argument. The IOMAP_DIO_FORCE_WAIT flag replaces the wait_for_completion, but only needs to be passed when the iocb isn't synchronous to start with to simplify the callers. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> [djwong: rework xfs_file.c so that we can push iomap changes separately] Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'fs/iomap')
-rw-r--r--fs/iomap/direct-io.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
index 604103ab76f9..947343730e2c 100644
--- a/fs/iomap/direct-io.c
+++ b/fs/iomap/direct-io.c
@@ -420,13 +420,15 @@ iomap_dio_actor(struct inode *inode, loff_t pos, loff_t length,
struct iomap_dio *
__iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
const struct iomap_ops *ops, const struct iomap_dio_ops *dops,
- bool wait_for_completion)
+ unsigned int dio_flags)
{
struct address_space *mapping = iocb->ki_filp->f_mapping;
struct inode *inode = file_inode(iocb->ki_filp);
size_t count = iov_iter_count(iter);
loff_t pos = iocb->ki_pos;
loff_t end = iocb->ki_pos + count - 1, ret = 0;
+ bool wait_for_completion =
+ is_sync_kiocb(iocb) || (dio_flags & IOMAP_DIO_FORCE_WAIT);
unsigned int iomap_flags = IOMAP_DIRECT;
struct blk_plug plug;
struct iomap_dio *dio;
@@ -434,9 +436,6 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
if (!count)
return NULL;
- if (WARN_ON(is_sync_kiocb(iocb) && !wait_for_completion))
- return ERR_PTR(-EIO);
-
dio = kmalloc(sizeof(*dio), GFP_KERNEL);
if (!dio)
return ERR_PTR(-ENOMEM);
@@ -598,11 +597,11 @@ EXPORT_SYMBOL_GPL(__iomap_dio_rw);
ssize_t
iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
const struct iomap_ops *ops, const struct iomap_dio_ops *dops,
- bool wait_for_completion)
+ unsigned int dio_flags)
{
struct iomap_dio *dio;
- dio = __iomap_dio_rw(iocb, iter, ops, dops, wait_for_completion);
+ dio = __iomap_dio_rw(iocb, iter, ops, dops, dio_flags);
if (IS_ERR_OR_NULL(dio))
return PTR_ERR_OR_ZERO(dio);
return iomap_dio_complete(dio);