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Linux: Cleanup unnecessary NULL check in __vdev_disk_physio()

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zio is never NULL when given to the vdev. Coverity complained saying:

"Either the check against null is unnecessary, or there may be a null
pointer dereference."

Reported-by: Coverity (CID-1466174)
Reviewed-by: Damian Szuberski <szuberskidamian@gmail.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14263
This commit is contained in:
Richard Yao 2022-12-04 16:46:44 -05:00 committed by Brian Behlendorf
parent 56c6f293c0
commit f1100863f7
1 changed files with 1 additions and 1 deletions
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2
module/os/linux/zfs/vdev_disk.c
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@ -665,7 +665,7 @@ __vdev_disk_physio(struct block_device *bdev, zio_t *zio,
retry: retry:
dr = vdev_disk_dio_alloc(bio_count); dr = vdev_disk_dio_alloc(bio_count);
if (zio && !(zio->io_flags & (ZIO_FLAG_IO_RETRY | ZIO_FLAG_TRYHARD)) && if (!(zio->io_flags & (ZIO_FLAG_IO_RETRY | ZIO_FLAG_TRYHARD)) &&
zio->io_vd->vdev_failfast == B_TRUE) { zio->io_vd->vdev_failfast == B_TRUE) {
bio_set_flags_failfast(bdev, &flags, zfs_vdev_failfast_mask & 1, bio_set_flags_failfast(bdev, &flags, zfs_vdev_failfast_mask & 1,
zfs_vdev_failfast_mask & 2, zfs_vdev_failfast_mask & 4); zfs_vdev_failfast_mask & 2, zfs_vdev_failfast_mask & 4);