alex/bcachefs-tools
1
0
Fork 0
mirror of https://github.com/koverstreet/bcachefs-tools.git synced 2025-02-22 00:00:03 +03:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

Handle -EAGAIN from io_submit()

Browse Source 
If io_submit() returns -EAGAIN, that just means the io context is full
and we need to wait for completions - no need to die.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-09-29 01:27:59 -04:00
parent 5e215654da
commit 6b175a0224
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
linux/blkdev.c
View File

@ -289,6 +289,8 @@ static void sync_write(struct bio *bio, struct iovec * iov, unsigned i)
sync_check(bio, ret);
}
static DECLARE_WAIT_QUEUE_HEAD(aio_events_completed);
static int aio_completion_thread(void *arg)
{
struct io_event events[8], *ev;
@ -303,6 +305,8 @@ static int aio_completion_thread(void *arg)
continue;
if (ret < 0)
die("io_getevents() error: %s", strerror(-ret));
if (ret)
wake_up(&aio_events_completed);
for (ev = events; ev < events + ret; ev++) {
struct bio *bio = (struct bio *) ev->data;
@ -394,7 +398,10 @@ static void aio_op(struct bio *bio, struct iovec *iov, unsigned i, int opcode)
}, *iocbp = &iocb;
atomic_inc(&running_requests);
ret = io_submit(aio_ctx, 1, &iocbp);
wait_event(aio_events_completed,
(ret = io_submit(aio_ctx, 1, &iocbp)) != -EAGAIN);;
if (ret != 1)
die("io_submit err: %s", strerror(-ret));
}