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RDMA/ucma: Use refcount_t for the ctx->ref

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Don't use an atomic as a refcount.

Link: https://lore.kernel.org/r/20200218191657.GA29724@ziepe.ca
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Jason Gunthorpe 2020-02-18 19:17:00 +00:00
parent b72bfc965e
commit 167b95ec88
1 changed files with 5 additions and 5 deletions
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10
drivers/infiniband/core/ucma.c
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@ -85,7 +85,7 @@ struct ucma_file {
struct ucma_context {
u32 id;
struct completion comp;
atomic_t ref;
refcount_t ref;
int events_reported;
int backlog;
@ -152,7 +152,7 @@ static struct ucma_context *ucma_get_ctx(struct ucma_file *file, int id)
if (ctx->closing)
ctx = ERR_PTR(-EIO);
else
atomic_inc(&ctx->ref);
refcount_inc(&ctx->ref);
}
xa_unlock(&ctx_table);
return ctx;
@ -160,7 +160,7 @@ static struct ucma_context *ucma_get_ctx(struct ucma_file *file, int id)
static void ucma_put_ctx(struct ucma_context *ctx)
{
if (atomic_dec_and_test(&ctx->ref))
if (refcount_dec_and_test(&ctx->ref))
complete(&ctx->comp);
}
@ -212,7 +212,7 @@ static struct ucma_context *ucma_alloc_ctx(struct ucma_file *file)
return NULL;
INIT_WORK(&ctx->close_work, ucma_close_id);
atomic_set(&ctx->ref, 1);
refcount_set(&ctx->ref, 1);
init_completion(&ctx->comp);
INIT_LIST_HEAD(&ctx->mc_list);
ctx->file = file;
@ -1502,7 +1502,7 @@ static ssize_t ucma_leave_multicast(struct ucma_file *file,
mc = ERR_PTR(-ENOENT);
else if (mc->ctx->file != file)
mc = ERR_PTR(-EINVAL);
else if (!atomic_inc_not_zero(&mc->ctx->ref))
else if (!refcount_inc_not_zero(&mc->ctx->ref))
mc = ERR_PTR(-ENXIO);
else
__xa_erase(&multicast_table, mc->id);