Re: [RFC for-6.10/block] loop: Fix a race between loop detach and loop open

[Chaitanya Kulkarni]

> Test case
> =========
> Test case involves the following two scripts:
> 
> script1.sh
> ----------
> while [ 1 ];
> do
> 	losetup -P -f /home/opt/looptest/test10.img
> 	blkid /dev/loop0p1
> done
> 
> script2.sh
> ----------
> while [ 1 ];
> do
> 	losetup -d /dev/loop0
> done
> 
> Without fix, the following IO errors have been observed:
> 
> kernel: __loop_clr_fd: partition scan of loop0 failed (rc=-16)
> kernel: I/O error, dev loop0, sector 20971392 op 0x0:(READ) flags 0x80700
>          phys_seg 1 prio class 0
> kernel: I/O error, dev loop0, sector 108868 op 0x0:(READ) flags 0x0
>          phys_seg 1 prio class 0
> kernel: Buffer I/O error on dev loop0p1, logical block 27201, async page
>          read
> 


can you please submit the blktest for this issue ? [1]

Please CC Shinichiro Kawasaki <shinichiro.kawasaki@xxxxxxx> (added here) 
when you submit blktests.

-ck

[1] https://github.com/osandov/blktests