block: add a bio_reuse helper #501
Open
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Author
|
Upstream branch: 944aacb |
blktests-ci
bot
force-pushed
the
linus-master_base
branch
from
8a473ad to
fa94b37
Compare
Author
|
Upstream branch: 944aacb |
blktests-ci
bot
force-pushed
the
series/1038846=>linus-master
branch
from
f517468 to
d257533
Compare
blktests-ci
bot
force-pushed
the
linus-master_base
branch
from
fa94b37 to
41a5848
Compare
Author
|
Upstream branch: 6c79021 |
blktests-ci
bot
force-pushed
the
series/1038846=>linus-master
branch
from
d257533 to
9b5e0de
Compare
blktests-ci
bot
force-pushed
the
linus-master_base
branch
from
41a5848 to
30680e5
Compare
added 2 commits
January 22, 2026 19:08
Add a helper to allow an existing bio to be resubmitted without having to re-add the payload. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Replace our somewhat fragile code to reuse the bio, which caused a regression in the past with the block layer bio_reuse helper. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Author
|
Upstream branch: a66191c |
The double buffering where just one scratch area is used at a time does not efficiently use the available memory. It was originally implemented when GC I/O could happen out of order, but that was removed before upstream submission to avoid fragmentation. Now that all GC I/Os are processed in order, just use a number of buffers as a simple ring buffer. For a synthetic benchmark that fills 256MiB HDD zones and punches out holes to free half the space this leads to a decrease of GC time by a little more than 25%. Thanks to Hans Holmberg <hans.holmberg@wdc.com> for testing and benchmarking. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
blktests-ci
bot
force-pushed
the
series/1038846=>linus-master
branch
from
9b5e0de to
13e037b
Compare
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Pull request for series with
subject: block: add a bio_reuse helper
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1042314