ext4 uses generic_file_read_iter(), which already supports this. Cc: Theodore Ts'o <tytso@xxxxxxx> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> --- Resending this one, as I've been carrying it privately since May. The necessary bits are now upstream (and XFS/btrfs equiv changes as well), please consider this one for 5.9. Thanks! diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 2a01e31a032c..1e827410e9e1 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -839,7 +839,7 @@ static int ext4_file_open(struct inode * inode, struct file * filp) return ret; } - filp->f_mode |= FMODE_NOWAIT; + filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC; return dquot_file_open(inode, filp); } -- Jens Axboe
