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Fix for hosts with an older libblkio.
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Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging

Pull request

Fix for hosts with an older libblkio.

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# gpg: Signature made Tue 13 Aug 2024 01:55:54 AM AEST
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]

* tag 'block-pull-request' of https://gitlab.com/stefanha/qemu:
  block/blkio: use FUA flag on write zeroes only if supported

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-08-13 07:59:32 +10:00
commit 9eb51530c1
2 changed files with 6 additions and 2 deletions
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6
block/blkio.c
View File

@ -899,8 +899,10 @@ static int blkio_open(BlockDriverState *bs, QDict *options, int flags,
}
bs->supported_write_flags = BDRV_REQ_FUA | BDRV_REQ_REGISTERED_BUF;
bs->supported_zero_flags = BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP |
BDRV_REQ_NO_FALLBACK;
bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK;
#ifdef CONFIG_BLKIO_WRITE_ZEROS_FUA
bs->supported_zero_flags |= BDRV_REQ_FUA;
#endif
qemu_mutex_init(&s->blkio_lock);
qemu_co_mutex_init(&s->bounce_lock);

2
meson.build
View File

@ -2305,6 +2305,8 @@ config_host_data.set('CONFIG_BLKIO', blkio.found())
if blkio.found()
config_host_data.set('CONFIG_BLKIO_VHOST_VDPA_FD',
blkio.version().version_compare('>=1.3.0'))
config_host_data.set('CONFIG_BLKIO_WRITE_ZEROS_FUA',
blkio.version().version_compare('>=1.4.0'))
endif
config_host_data.set('CONFIG_CURL', curl.found())
config_host_data.set('CONFIG_CURSES', curses.found())