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io_uring: export io_[un]account_mem

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Export pinned memory accounting helpers, they'll be used by zcrx
shortly.

Cc: stable@vger.kernel.org
Fixes: cf96310c5f ("io_uring/zcrx: add io_zcrx_area")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9a61e54bd89289b39570ae02fe620e12487439e4.1752699568.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2025-07-16 22:04:08 +01:00 committed by Jens Axboe
parent 0ebc9a7ecf
commit 11fbada718
2 changed files with 4 additions and 2 deletions
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4
io_uring/rsrc.c
View File

@ -55,7 +55,7 @@ int __io_account_mem(struct user_struct *user, unsigned long nr_pages)
return 0; return 0;
} }
static void io_unaccount_mem(struct io_ring_ctx *ctx, unsigned long nr_pages) void io_unaccount_mem(struct io_ring_ctx *ctx, unsigned long nr_pages)
{ {
if (ctx->user) if (ctx->user)
__io_unaccount_mem(ctx->user, nr_pages); __io_unaccount_mem(ctx->user, nr_pages);
@ -64,7 +64,7 @@ static void io_unaccount_mem(struct io_ring_ctx *ctx, unsigned long nr_pages)
atomic64_sub(nr_pages, &ctx->mm_account->pinned_vm); atomic64_sub(nr_pages, &ctx->mm_account->pinned_vm);
} }
static int io_account_mem(struct io_ring_ctx *ctx, unsigned long nr_pages) int io_account_mem(struct io_ring_ctx *ctx, unsigned long nr_pages)
{ {
int ret; int ret;

2
io_uring/rsrc.h
View File

@ -120,6 +120,8 @@ int io_files_update(struct io_kiocb *req, unsigned int issue_flags);
int io_files_update_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); int io_files_update_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int __io_account_mem(struct user_struct *user, unsigned long nr_pages); int __io_account_mem(struct user_struct *user, unsigned long nr_pages);
int io_account_mem(struct io_ring_ctx *ctx, unsigned long nr_pages);
void io_unaccount_mem(struct io_ring_ctx *ctx, unsigned long nr_pages);
static inline void __io_unaccount_mem(struct user_struct *user, static inline void __io_unaccount_mem(struct user_struct *user,
unsigned long nr_pages) unsigned long nr_pages)