io_uring: export io_[un]account_mem

commit 11fbada7184f9e19bcdfa2f6b15828a78b8897a6 upstream.

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

Cc: stable@vger.kernel.org
Fixes: cf96310c5f9a0 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index f2b31fb689927106ba8adae8717d40c5fd2a9727..2d5d66e792ecd7ebf1ce3bc985e2eb276bf0c92d 100644 (file)
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c
@@ -55,7 +55,7 @@ int __io_account_mem(struct user_struct *user, unsigned long nr_pages)
        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)
                __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);
 }
 
-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;
 

diff --git a/io_uring/rsrc.h b/io_uring/rsrc.h
index 25e7e998dcfd0a463bc98e81a77148637801cc23..a3ca6ba66596fb3759836b046009ba9448901526 100644 (file)
--- a/io_uring/rsrc.h
+++ b/io_uring/rsrc.h
@@ -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_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,
                                      unsigned long nr_pages)