From: Justin M. Forbes <jforbes@xxxxxxxxxxxxxxxxx>
Revert "loop: Add sanity check for read/write_iter"
This causes loop device creation to fail in both CoreOS and regular
Fedora CI testing. Lets revert in ark-latest until an upstream solution
can be found.
This reverts commit f5c84eff634ba003326aa034c414e2a9dcb7c6a7.
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index blahblah..blahblah 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -505,17 +505,6 @@ static void loop_assign_backing_file(struct loop_device *lo, struct file *file)
lo->lo_min_dio_size = loop_query_min_dio_size(lo);
}
-static int loop_check_backing_file(struct file *file)
-{
- if (!file->f_op->read_iter)
- return -EINVAL;
-
- if ((file->f_mode & FMODE_WRITE) && !file->f_op->write_iter)
- return -EINVAL;
-
- return 0;
-}
-
/*
* loop_change_fd switched the backing store of a loopback device to
* a new file. This is useful for operating system installers to free up
@@ -537,10 +526,6 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
if (!file)
return -EBADF;
- error = loop_check_backing_file(file);
- if (error)
- return error;
-
/* suppress uevents while reconfiguring the device */
dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 1);
@@ -978,14 +963,6 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
if (!file)
return -EBADF;
-
- if ((mode & BLK_OPEN_WRITE) && !file->f_op->write_iter)
- return -EINVAL;
-
- error = loop_check_backing_file(file);
- if (error)
- return error;
-
is_loop = is_loop_device(file);
/* This is safe, since we have a reference from open(). */
--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/3876
--
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