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zfs_refcount_remove: explictly ignore returns

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Coverity noticed that sometimes we ignore the return, and sometimes we
don't. Its not wrong, and I like consistent style, so here we are.

Reported-by: Coverity (CID-1564584)
Reported-by: Coverity (CID-1564585)
Reported-by: Coverity (CID-1564586)
Reported-by: Coverity (CID-1564587)
Reported-by: Coverity (CID-1564588)

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #15647
This commit is contained in:
Rob N 2023-12-08 03:21:38 +11:00 committed by GitHub
parent 11656234b5
commit 4836d293c0
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 5 deletions
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12
module/zfs/arc.c
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@ -6069,7 +6069,7 @@ arc_prune_task(void *ptr)
if (func != NULL)
func(ap->p_adjust, ap->p_private);
zfs_refcount_remove(&ap->p_refcnt, func);
(void) zfs_refcount_remove(&ap->p_refcnt, func);
}
/*
@ -6098,7 +6098,7 @@ arc_prune_async(uint64_t adjust)
ap->p_adjust = adjust;
if (taskq_dispatch(arc_prune_taskq, arc_prune_task,
ap, TQ_SLEEP) == TASKQID_INVALID) {
zfs_refcount_remove(&ap->p_refcnt, ap->p_pfunc);
(void) zfs_refcount_remove(&ap->p_refcnt, ap->p_pfunc);
continue;
}
ARCSTAT_BUMP(arcstat_prune);
@ -7720,7 +7720,7 @@ arc_fini(void)
mutex_enter(&arc_prune_mtx);
while ((p = list_remove_head(&arc_prune_list)) != NULL) {
zfs_refcount_remove(&p->p_refcnt, &arc_prune_list);
(void) zfs_refcount_remove(&p->p_refcnt, &arc_prune_list);
zfs_refcount_destroy(&p->p_refcnt);
kmem_free(p, sizeof (*p));
}
@ -8301,7 +8301,8 @@ l2arc_write_done(zio_t *zio)
ARCSTAT_BUMPDOWN(arcstat_l2_log_blk_count);
zfs_refcount_remove_many(&dev->l2ad_lb_asize, asize,
lb_ptr_buf);
zfs_refcount_remove(&dev->l2ad_lb_count, lb_ptr_buf);
(void) zfs_refcount_remove(&dev->l2ad_lb_count,
lb_ptr_buf);
kmem_free(lb_ptr_buf->lb_ptr,
sizeof (l2arc_log_blkptr_t));
kmem_free(lb_ptr_buf, sizeof (l2arc_lb_ptr_buf_t));
@ -8772,7 +8773,8 @@ l2arc_evict(l2arc_dev_t *dev, uint64_t distance, boolean_t all)
ARCSTAT_BUMPDOWN(arcstat_l2_log_blk_count);
zfs_refcount_remove_many(&dev->l2ad_lb_asize, asize,
lb_ptr_buf);
zfs_refcount_remove(&dev->l2ad_lb_count, lb_ptr_buf);
(void) zfs_refcount_remove(&dev->l2ad_lb_count,
lb_ptr_buf);
list_remove(&dev->l2ad_lbptr_list, lb_ptr_buf);
kmem_free(lb_ptr_buf->lb_ptr,
sizeof (l2arc_log_blkptr_t));