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| author | Stefan Hajnoczi | 2022-06-09 18:47:11 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi | 2022-06-15 17:43:42 +0200 |
| commit | f387cac5af030a58ac5a0dacf64cab5e5a4fe5c7 (patch) | |
| tree | bb3ffcdbcf7184f2c1206e95e1723b2e2bb1d3e6 /hw/remote/iommu.c | |
| parent | vfio-user: handle reset of remote device (diff) | |
| download | qemu-f387cac5af030a58ac5a0dacf64cab5e5a4fe5c7.tar.gz qemu-f387cac5af030a58ac5a0dacf64cab5e5a4fe5c7.tar.xz qemu-f387cac5af030a58ac5a0dacf64cab5e5a4fe5c7.zip | |
linux-aio: fix unbalanced plugged counter in laio_io_unplug()
Every laio_io_plug() call has a matching laio_io_unplug() call. There is
a plugged counter that tracks the number of levels of plugging and
allows for nesting.
The plugged counter must reflect the balance between laio_io_plug() and
laio_io_unplug() calls accurately. Otherwise I/O stalls occur since
io_submit(2) calls are skipped while plugged.
Reported-by: Nikolay Tenev <nt@storpool.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20220609164712.1539045-2-stefanha@redhat.com
Cc: Stefano Garzarella <sgarzare@redhat.com>
Fixes: 68d7946648 ("linux-aio: add `dev_max_batch` parameter to laio_io_unplug()")
[Stefano Garzarella suggested adding a Fixes tag.
--Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/remote/iommu.c')
0 files changed, 0 insertions, 0 deletions