diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2023-04-18 14:06:36 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-18 19:38:26 -0600 |
| commit | c376644fb915fbdea8c4a04f859d032a8be352fd (patch) | |
| tree | b861357c660c9f944a217dcb2be2c80ea8eee3dc /io_uring/filetable.c | |
| parent | 63fea89027ff4fd4f350b471ad5b9220d373eec5 (diff) | |
| download | linux-c376644fb915fbdea8c4a04f859d032a8be352fd.tar.gz | |
io_uring/rsrc: merge nodes and io_rsrc_put
struct io_rsrc_node carries a number of resources represented by struct
io_rsrc_put. That was handy before for sync overhead ammortisation, but
all complexity is gone and nodes are simple and lightweight. Let's
allocate a separate node for each resource.
Nodes and io_rsrc_put and not much different in size, and former are
cached, so node allocation should work better. That also removes some
overhead for nested iteration in io_rsrc_node_ref_zero() /
__io_rsrc_put_work().
Another reason for the patch is that it greatly reduces complexity
by moving io_rsrc_node_switch[_start]() inside io_queue_rsrc_removal(),
so users don't have to care about it.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/c7d3a45b30cc14cd93700a710dd112edc703db98.1681822823.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/filetable.c')
| -rw-r--r-- | io_uring/filetable.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/io_uring/filetable.c b/io_uring/filetable.c index 367a44a6c8c5f..0f6fa791a47de 100644 --- a/io_uring/filetable.c +++ b/io_uring/filetable.c @@ -80,10 +80,6 @@ static int io_install_fixed_file(struct io_ring_ctx *ctx, struct file *file, if (file_slot->file_ptr) { struct file *old_file; - ret = io_rsrc_node_switch_start(ctx); - if (ret) - return ret; - old_file = (struct file *)(file_slot->file_ptr & FFS_MASK); ret = io_queue_rsrc_removal(ctx->file_data, slot_index, old_file); if (ret) @@ -91,7 +87,6 @@ static int io_install_fixed_file(struct io_ring_ctx *ctx, struct file *file, file_slot->file_ptr = 0; io_file_bitmap_clear(&ctx->file_table, slot_index); - io_rsrc_node_switch(ctx, ctx->file_data); } ret = io_scm_file_account(ctx, file); @@ -152,9 +147,6 @@ int io_fixed_fd_remove(struct io_ring_ctx *ctx, unsigned int offset) return -ENXIO; if (offset >= ctx->nr_user_files) return -EINVAL; - ret = io_rsrc_node_switch_start(ctx); - if (ret) - return ret; offset = array_index_nospec(offset, ctx->nr_user_files); file_slot = io_fixed_file_slot(&ctx->file_table, offset); @@ -168,7 +160,6 @@ int io_fixed_fd_remove(struct io_ring_ctx *ctx, unsigned int offset) file_slot->file_ptr = 0; io_file_bitmap_clear(&ctx->file_table, offset); - io_rsrc_node_switch(ctx, ctx->file_data); return 0; } |