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io_uring: rename ->resize_lock

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->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>
This commit is contained in:
Pavel Begunkov
2024-11-29 13:34:22 +00:00
committed by Jens Axboe
parent 4bbf9020be
commit 943d0609d0
4 changed files with 9 additions and 9 deletions
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6
io_uring/memmap.c
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@@ -329,7 +329,7 @@ __cold int io_uring_mmap(struct file *file, struct vm_area_struct *vma)
unsigned int npages;
void *ptr;
guard(mutex)(&ctx->resize_lock);
guard(mutex)(&ctx->mmap_lock);
ptr = io_uring_validate_mmap_request(file, vma->vm_pgoff, sz);
if (IS_ERR(ptr))
@@ -365,7 +365,7 @@ unsigned long io_uring_get_unmapped_area(struct file *filp, unsigned long addr,
if (addr)
return -EINVAL;
guard(mutex)(&ctx->resize_lock);
guard(mutex)(&ctx->mmap_lock);
ptr = io_uring_validate_mmap_request(filp, pgoff, len);
if (IS_ERR(ptr))
@@ -415,7 +415,7 @@ unsigned long io_uring_get_unmapped_area(struct file *file, unsigned long addr,
struct io_ring_ctx *ctx = file->private_data;
void *ptr;
guard(mutex)(&ctx->resize_lock);
guard(mutex)(&ctx->mmap_lock);
ptr = io_uring_validate_mmap_request(file, pgoff, len);
if (IS_ERR(ptr))