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io_uring/net: make page accounting more consistent

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Make network page accounting more consistent with how buffer
registration is working, i.e. account all memory to ctx->user.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/4aacfe64bbb81b27f9ecf5d5c219c69a07e5aa56.1658742118.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov
2022-07-25 10:52:05 +01:00
committed by Jens Axboe
parent 2e32ba5607
commit 6a9ce66f4d
5 changed files with 37 additions and 14 deletions
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12
io_uring/rsrc.c
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@@ -44,17 +44,13 @@ void io_rsrc_refs_drop(struct io_ring_ctx *ctx)
}
}
static inline void __io_unaccount_mem(struct user_struct *user,
unsigned long nr_pages)
{
atomic_long_sub(nr_pages, &user->locked_vm);
}
static inline int __io_account_mem(struct user_struct *user,
unsigned long nr_pages)
int __io_account_mem(struct user_struct *user, unsigned long nr_pages)
{
unsigned long page_limit, cur_pages, new_pages;
if (!nr_pages)
return 0;
/* Don't allow more pages than we can safely lock */
page_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;