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Stefan Hajnoczi be6a166fde block/io_uring: clarify that short reads can happen 
Jens Axboe has confirmed that short reads are rare but can happen:
https://lore.kernel.org/io-uring/YsU%2FCGkl9ZXUI+Tj@stefanha-x1.localdomain/T/#m729963dc577d709b709c191922e98ec79d7eef54

The luring_resubmit_short_read() comment claimed they were only due to a
specific io_uring bug that was fixed in Linux commit 9d93a3f5a0c
("io_uring: punt short reads to async context"), which is wrong.
Dominique Martinet found that a btrfs bug also causes short reads. There
may be more kernel code paths that result in short reads.

Let's consider short reads fair game.

Cc: Dominique Martinet <dominique.martinet@atmark-techno.com>
Based-on: <20220630010137.2518851-1-dominique.martinet@atmark-techno.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20220706080341.1206476-1-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-07-07 09:04:15 +01:00
..
export
vduse-blk: Add name option
2022-06-24 17:07:06 +02:00
monitor
block: improve block_dirty_bitmap_merge(): don't allocate extra bitmap
2022-06-24 17:07:06 +02:00
accounting.c
…
aio_task.c
…
amend.c
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backup.c
block: simplify handling of try to merge different sized bitmaps
2022-06-24 17:07:06 +02:00
blkdebug.c
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blklogwrites.c
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blkreplay.c
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blkverify.c
Replace GCC_FMT_ATTR with G_GNUC_PRINTF
2022-03-22 14:40:51 +04:00
block-backend.c
block: Support passing NULL ops to blk_set_dev_ops()
2022-06-24 17:07:06 +02:00
block-copy.c
block/block-copy: block_copy(): add timeout_ns parameter
2022-06-29 10:56:12 +03:00
block-gen.h
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bochs.c
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cloop.c
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commit.c
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copy-before-write.c
block/copy-before-write: implement cbw-timeout option
2022-06-29 10:56:12 +03:00
copy-before-write.h
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copy-on-read.c
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copy-on-read.h
Clean up ill-advised or unusual header guards
2022-05-11 16:50:01 +02:00
coroutines.h
Clean up header guards that don't match their file name
2022-05-11 16:49:06 +02:00
create.c
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crypto.c
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crypto.h
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curl.c
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dirty-bitmap.c
block: simplify handling of try to merge different sized bitmaps
2022-06-24 17:07:06 +02:00
dmg-bz2.c
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dmg-lzfse.c
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dmg.c
…
dmg.h
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file-posix.c
block: move fcntl_setfl()
2022-05-03 15:17:53 +04:00
file-win32.c
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filter-compress.c
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gluster.c
block/gluster: correctly set max_pdiscard
2022-06-24 17:07:06 +02:00
io_uring.c
block/io_uring: clarify that short reads can happen
2022-07-07 09:04:15 +01:00
io.c
block: drop unused bdrv_co_drain() API
2022-06-24 17:07:06 +02:00
iscsi-opts.c
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iscsi.c
include: move qemu_get_vm_name() to sysemu.h
2022-04-06 14:31:43 +02:00
linux-aio.c
linux-aio: explain why max batch is checked in laio_io_unplug()
2022-06-15 16:43:42 +01:00
meson.build
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mirror.c
block: use 'unsigned' for in_flight field on driver state
2022-06-29 10:57:02 +03:00
nbd.c
block: use 'unsigned' for in_flight field on driver state
2022-06-29 10:57:02 +03:00
nfs.c
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null.c
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nvme.c
Replace qemu_real_host_page variables with inlined functions
2022-04-06 10:50:38 +02:00
parallels-ext.c
block: Fix misleading hexadecimal format
2022-03-24 10:38:42 +00:00
parallels.c
Replace qemu_real_host_page variables with inlined functions
2022-04-06 10:50:38 +02:00
parallels.h
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preallocate.c
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progress_meter.c
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qapi-sysemu.c
block: add 'force' parameter to 'blockdev-change-medium' command
2022-04-25 12:02:36 +02:00
qapi.c
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qcow2-bitmap.c
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qcow2-cache.c
Replace qemu_real_host_page variables with inlined functions
2022-04-06 10:50:38 +02:00
qcow2-cluster.c
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qcow2-refcount.c
qcow2: Add errp to rebuild_refcount_structure()
2022-04-20 12:09:17 +02:00
qcow2-snapshot.c
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qcow2-threads.c
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qcow2.c
qcow2: Do not reopen data_file in invalidate_cache
2022-05-04 15:55:23 +02:00
qcow2.h
Replace GCC_FMT_ATTR with G_GNUC_PRINTF
2022-03-22 14:40:51 +04:00
qcow.c
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qed-check.c
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qed-cluster.c
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qed-l2-cache.c
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qed-table.c
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qed.c
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qed.h
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quorum.c
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raw-format.c
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rbd.c
block/rbd: report a better error when namespace does not exist
2022-06-24 17:07:06 +02:00
replication.c
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reqlist.c
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snapshot-access.c
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snapshot.c
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ssh.c
Replace GCC_FMT_ATTR with G_GNUC_PRINTF
2022-03-22 14:40:51 +04:00
stream.c
block/stream: Drain subtree around graph change
2022-03-29 16:30:55 +02:00
throttle-groups.c
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throttle.c
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trace-events
nbd: trace long NBD operations
2022-06-29 10:57:02 +03:00
trace.h
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vdi.c
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vhdx-endian.c
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vhdx-log.c
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vhdx.c
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vhdx.h
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vmdk.c
block/vmdk: Fix reopening bs->file
2022-05-04 15:55:23 +02:00
vpc.c
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vvfat.c
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win32-aio.c
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write-threshold.c
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