block: stop setting ->direct_IO

Direct I/O on block devices now nevers goes through aops->direct_IO.
Stop setting it and set the FMODE_CAN_ODIRECT in ->open instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20230801172201.1923299-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/fops.c b/block/fops.c
index 8a05d99..f0b822c 100644 (file)
--- a/block/fops.c
+++ b/block/fops.c
@@ -428,7 +428,6 @@ const struct address_space_operations def_blk_aops = {
        .writepage      = blkdev_writepage,
        .write_begin    = blkdev_write_begin,
        .write_end      = blkdev_write_end,
-       .direct_IO      = blkdev_direct_IO,
        .migrate_folio  = buffer_migrate_folio_norefs,
        .is_dirty_writeback = buffer_check_dirty_writeback,
 };
@@ -505,7 +504,7 @@ static int blkdev_open(struct inode *inode, struct file *filp)
         * during an unstable branch.
         */
        filp->f_flags |= O_LARGEFILE;
-       filp->f_mode |= FMODE_BUF_RASYNC;
+       filp->f_mode |= FMODE_BUF_RASYNC | FMODE_CAN_ODIRECT;
 
        /*
         * Use the file private data to store the holder for exclusive openes.