Patch "IB/hfi1: Use bitmap_zalloc() when applicable" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    IB/hfi1: Use bitmap_zalloc() when applicable

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ib-hfi1-use-bitmap_zalloc-when-applicable.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 806ead3ac3eb1b0f0aee8ef311771df1cad95c26
Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Date:   Thu Nov 25 20:53:22 2021 +0100

    IB/hfi1: Use bitmap_zalloc() when applicable
    
    [ Upstream commit f86dbc9fc5d83384eae7eda0de17f823e8c81ca0 ]
    
    Use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid
    some open-coded arithmetic in allocator arguments.
    
    Also change the corresponding 'kfree()' into 'bitmap_free()' to keep
    consistency.
    
    Link: https://lore.kernel.org/r/d46c6bc1869b8869244fa71943d2cad4104b3668.1637869925.git.christophe.jaillet@xxxxxxxxxx
    Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
    Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
    Stable-dep-of: c9358de193ec ("IB/hfi1: Fix wrong mmu_node used for user SDMA packet after invalidate")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c
index a932ae1e03af5..ae58b48afe074 100644
--- a/drivers/infiniband/hw/hfi1/user_sdma.c
+++ b/drivers/infiniband/hw/hfi1/user_sdma.c
@@ -161,9 +161,7 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt,
 	if (!pq->reqs)
 		goto pq_reqs_nomem;
 
-	pq->req_in_use = kcalloc(BITS_TO_LONGS(hfi1_sdma_comp_ring_size),
-				 sizeof(*pq->req_in_use),
-				 GFP_KERNEL);
+	pq->req_in_use = bitmap_zalloc(hfi1_sdma_comp_ring_size, GFP_KERNEL);
 	if (!pq->req_in_use)
 		goto pq_reqs_no_in_use;
 
@@ -210,7 +208,7 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt,
 cq_nomem:
 	kmem_cache_destroy(pq->txreq_cache);
 pq_txreq_nomem:
-	kfree(pq->req_in_use);
+	bitmap_free(pq->req_in_use);
 pq_reqs_no_in_use:
 	kfree(pq->reqs);
 pq_reqs_nomem:
@@ -257,7 +255,7 @@ int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd,
 			pq->wait,
 			!atomic_read(&pq->n_reqs));
 		kfree(pq->reqs);
-		kfree(pq->req_in_use);
+		bitmap_free(pq->req_in_use);
 		kmem_cache_destroy(pq->txreq_cache);
 		flush_pq_iowait(pq);
 		kfree(pq);