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1edaac340f
When introduced in commit9eb22f7fed("fs: add ioctl to query metadata and protection info capabilities") the stub of blk_get_meta_cap() for !BLK_DEV_INTEGRITY always returns -EOPNOTSUPP. The motivation was that while the command was unsupported in that configuration it was still recognized. A later change instead assumed -ENOIOCTLCMD as is required for unknown ioctl commands per Documentation/driver-api/ioctl.rst. The result being that on !BLK_DEV_INTEGRITY configs, any ioctl which reaches blkdev_common_ioctl() will return -EOPNOTSUPP. Change the stub to return -ENOIOCTLCMD, fixing the issue and better matching with expectations. [ The blkdev_common_ioctl() confusion has been fixed, but -ENOIOCTLCMD is the right thing to return for unrecognized ioctls, so the patch remains the right thing to do. - Linus ] Link: https://lore.kernel.org/lkml/CACzX3AsRd__fXb9=CJPTTJC494SDnYAtYrN2=+bZgMCvM6UQDg@mail.gmail.com Fixes:42b0ef01e6("block: fix FS_IOC_GETLBMD_CAP parsing in blkdev_common_ioctl()") Signed-off-by: Klara Modin <klarasmodin@gmail.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>