From: Pavel Begunkov <[email protected]>
To: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH v2 1/6] io_uring: make del_task_file more forgiving
Date: Fri, 5 Mar 2021 04:18:19 +0000 [thread overview]
Message-ID: <1612f92861f7e5595f8a5fbdedc376e91b8f5faf.1614917790.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>
Rework io_uring_del_task_file(), so it accepts an index to delete, and
it's not necessarily have to be in the ->xa. Infer file from xa_erase()
to maintain a single origin of truth.
Signed-off-by: Pavel Begunkov <[email protected]>
---
fs/io_uring.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 99e37f9688bf..bcf2c08fc12e 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -8779,15 +8779,18 @@ static int io_uring_add_task_file(struct io_ring_ctx *ctx, struct file *file)
/*
* Remove this io_uring_file -> task mapping.
*/
-static void io_uring_del_task_file(struct file *file)
+static void io_uring_del_task_file(unsigned long index)
{
struct io_uring_task *tctx = current->io_uring;
+ struct file *file;
+
+ file = xa_erase(&tctx->xa, index);
+ if (!file)
+ return;
if (tctx->last == file)
tctx->last = NULL;
- file = xa_erase(&tctx->xa, (unsigned long)file);
- if (file)
- fput(file);
+ fput(file);
}
static void io_uring_clean_tctx(struct io_uring_task *tctx)
@@ -8796,7 +8799,7 @@ static void io_uring_clean_tctx(struct io_uring_task *tctx)
unsigned long index;
xa_for_each(&tctx->xa, index, file)
- io_uring_del_task_file(file);
+ io_uring_del_task_file(index);
if (tctx->io_wq) {
io_wq_put_and_exit(tctx->io_wq);
tctx->io_wq = NULL;
--
2.24.0
next prev parent reply other threads:[~2021-03-05 4:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 4:18 [PATCH v2 5.12 0/6] remove task file notes Pavel Begunkov
2021-03-05 4:18 ` Pavel Begunkov [this message]
2021-03-05 4:18 ` [PATCH v2 2/6] io_uring: introduce ctx to tctx back map Pavel Begunkov
2021-03-05 4:18 ` [PATCH v2 3/6] io_uring: do ctx initiated file note removal Pavel Begunkov
2021-03-05 4:18 ` [PATCH v2 4/6] io_uring: don't take task ring-file notes Pavel Begunkov
2021-03-05 4:18 ` [PATCH v2 5/6] io_uring: index io_uring->xa by ctx not file Pavel Begunkov
2021-03-05 4:18 ` [PATCH v2 6/6] io_uring: warn when ring exit takes too long Pavel Begunkov
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