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Merge tag 'io_uring-6.19-20260102' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

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Pull io_uring fixes from Jens Axboe:

 - Removed dead argument length for io_uring_validate_mmap_request()

 - Use GFP_NOWAIT for overflow CQEs on legacy ring setups rather than
   GFP_ATOMIC, which makes it play nicer with memcg limits

 - Fix a potential circular locking issue with tctx node removal and
   exec based cancelations

* tag 'io_uring-6.19-20260102' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring/memmap: drop unused sz param in io_uring_validate_mmap_request()
  io_uring/tctx: add separate lock for list of tctx's in ctx
  io_uring: use GFP_NOWAIT for overflow CQEs on legacy rings
This commit is contained in:
Linus Torvalds
2026-01-02 12:07:55 -08:00
parent 71b62ed6ce 70eafc7430
commit 509b5b1152
6 changed files with 28 additions and 11 deletions
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8
include/linux/io_uring_types.h
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@@ -424,11 +424,17 @@ struct io_ring_ctx {
struct user_struct *user;
struct mm_struct *mm_account;
/*
* List of tctx nodes for this ctx, protected by tctx_lock. For
* cancelation purposes, nests under uring_lock.
*/
struct list_head tctx_list;
struct mutex tctx_lock;
/* ctx exit and cancelation */
struct llist_head fallback_llist;
struct delayed_work fallback_work;
struct work_struct exit_work;
struct list_head tctx_list;
struct completion ref_comp;
/* io-wq management, e.g. thread count */