... instead of messing with iocb flags
Suggested-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Christian Brauner (Microsoft) <brauner@xxxxxxxxxx>
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
fs/btrfs/file.c | 17 -----------------
fs/btrfs/inode.c | 3 ++-
2 files changed, 2 insertions(+), 18 deletions(-)
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 1fd827b99c1b..98f81e304eb1 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1848,7 +1848,6 @@ static ssize_t check_direct_IO(struct btrfs_fs_info *fs_info,
static ssize_t btrfs_direct_write(struct kiocb *iocb, struct iov_iter *from)
{
- const bool is_sync_write = (iocb->ki_flags & IOCB_DSYNC);
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
@@ -1901,15 +1900,6 @@ static ssize_t btrfs_direct_write(struct kiocb *iocb, struct iov_iter *from)
goto buffered;
}
- /*
- * We remove IOCB_DSYNC so that we don't deadlock when iomap_dio_rw()
- * calls generic_write_sync() (through iomap_dio_complete()), because
- * that results in calling fsync (btrfs_sync_file()) which will try to
- * lock the inode in exclusive/write mode.
- */
- if (is_sync_write)
- iocb->ki_flags &= ~IOCB_DSYNC;
-
/*
* The iov_iter can be mapped to the same file range we are writing to.
* If that's the case, then we will deadlock in the iomap code, because
@@ -1964,13 +1954,6 @@ static ssize_t btrfs_direct_write(struct kiocb *iocb, struct iov_iter *from)
btrfs_inode_unlock(inode, ilock_flags);
- /*
- * Add back IOCB_DSYNC. Our caller, btrfs_file_write_iter(), will do
- * the fsync (call generic_write_sync()).
- */
- if (is_sync_write)
- iocb->ki_flags |= IOCB_DSYNC;
-
/* If 'err' is -ENOTBLK then it means we must fallback to buffered IO. */
if ((err < 0 && err != -ENOTBLK) || !iov_iter_count(from))
goto out;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 81737eff92f3..fbf0aee7d66a 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8152,7 +8152,8 @@ ssize_t btrfs_dio_rw(struct kiocb *iocb, struct iov_iter *iter, size_t done_befo
struct btrfs_dio_data data;
return iomap_dio_rw(iocb, iter, &btrfs_dio_iomap_ops, &btrfs_dio_ops,
- IOMAP_DIO_PARTIAL, &data, done_before);
+ IOMAP_DIO_PARTIAL | IOMAP_DIO_NOSYNC,
+ &data, done_before);
}
static int btrfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
--
2.30.2
