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io_uring: allow task match to be passed to io_req_cache_free()

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No changes in this patch, just allows a caller to pass in a targeted
task that we must match for freeing requests in the cache.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2021-02-13 09:00:02 -07:00
parent e06aa2e94f
commit 68e68ee6e3
1 changed files with 7 additions and 6 deletions
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13
fs/io_uring.c
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@ -8681,12 +8681,13 @@ static void io_destroy_buffers(struct io_ring_ctx *ctx)
idr_destroy(&ctx->io_buffer_idr);
}
static void io_req_cache_free(struct list_head *list)
static void io_req_cache_free(struct list_head *list, struct task_struct *tsk)
{
while (!list_empty(list)) {
struct io_kiocb *req;
struct io_kiocb *req, *nxt;
req = list_first_entry(list, struct io_kiocb, compl.list);
list_for_each_entry_safe(req, nxt, list, compl.list) {
if (tsk && req->task != tsk)
continue;
list_del(&req->compl.list);
kmem_cache_free(req_cachep, req);
}
@ -8742,8 +8743,8 @@ static void io_ring_ctx_free(struct io_ring_ctx *ctx)
free_uid(ctx->user);
put_cred(ctx->creds);
kfree(ctx->cancel_hash);
io_req_cache_free(&ctx->submit_state.comp.free_list);
io_req_cache_free(&ctx->submit_state.comp.locked_free_list);
io_req_cache_free(&ctx->submit_state.comp.free_list, NULL);
io_req_cache_free(&ctx->submit_state.comp.locked_free_list, NULL);
kfree(ctx);
}