diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2024-11-29 13:34:22 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-12-23 08:17:15 -0700 |
| commit | 943d0609d0571af092dc13456cbca70351e4d20e (patch) | |
| tree | a350ecfbb452bd9111fad45aa18d4601983d6538 /io_uring/register.c | |
| parent | 4bbf9020becbfd8fc2c3da790855b7042fad455b (diff) | |
io_uring: rename ->resize_lock
->resize_lock is used for resizing rings, but it's a good idea to reuse
it in other cases as well. Rename it into mmap_lock as it's protects
from races with mmap.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/68f705306f3ac4d2fb999eb80ea1615015ce9f7f.1732886067.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/register.c')
| -rw-r--r-- | io_uring/register.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/io_uring/register.c b/io_uring/register.c index fdd44914c39c..77743e3f6751 100644 --- a/io_uring/register.c +++ b/io_uring/register.c @@ -489,15 +489,15 @@ static int io_register_resize_rings(struct io_ring_ctx *ctx, void __user *arg) } /* - * We'll do the swap. Grab the ctx->resize_lock, which will exclude + * We'll do the swap. Grab the ctx->mmap_lock, which will exclude * any new mmap's on the ring fd. Clear out existing mappings to prevent * mmap from seeing them, as we'll unmap them. Any attempt to mmap * existing rings beyond this point will fail. Not that it could proceed * at this point anyway, as the io_uring mmap side needs go grab the - * ctx->resize_lock as well. Likewise, hold the completion lock over the + * ctx->mmap_lock as well. Likewise, hold the completion lock over the * duration of the actual swap. */ - mutex_lock(&ctx->resize_lock); + mutex_lock(&ctx->mmap_lock); spin_lock(&ctx->completion_lock); o.rings = ctx->rings; ctx->rings = NULL; @@ -564,7 +564,7 @@ overflow: ret = 0; out: spin_unlock(&ctx->completion_lock); - mutex_unlock(&ctx->resize_lock); + mutex_unlock(&ctx->mmap_lock); io_register_free_rings(&p, to_free); if (ctx->sq_data) |