From: Christoph Hellwig <hch@lst.de>
To: Eric Biggers <ebiggers@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-fscrypt@vger.kernel.org
Subject: Re: [PATCH 7/9] blk-crypto: use mempool_alloc_bulk for encrypted bio page allocation
Date: Mon, 22 Dec 2025 23:18:40 +0100 [thread overview]
Message-ID: <20251222221840.GA17565@lst.de> (raw)
In-Reply-To: <20251219200244.GE1602@sol>
On Fri, Dec 19, 2025 at 12:02:44PM -0800, Eric Biggers wrote:
> The error handling at out_free_enc_bio is still broken, I'm afraid.
> It's not taking into account that some of the pages may have been moved
> into bvecs and some have not.
>
> I think it needs something like the following:
That will now leak the pages that were successfully added to the bio.
I end up with a version that just adds the pages to the bio even
on failure. I've pushed the branch here:
https://git.infradead.org/?p=users/hch/misc.git;a=shortlog;h=refs/heads/blk-crypto-fallback
but I plan to come up with error injection to actually test this
patch given the amount of trouble it caused.
next prev parent reply other threads:[~2025-12-22 22:18 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-17 6:06 move blk-crypto-fallback to sit above the block layer v3 Christoph Hellwig
2025-12-17 6:06 ` [PATCH 1/9] fscrypt: pass a real sector_t to fscrypt_zeroout_range_inline_crypt Christoph Hellwig
2025-12-17 6:06 ` [PATCH 2/9] fscrypt: keep multiple bios in flight in fscrypt_zeroout_range_inline_crypt Christoph Hellwig
2025-12-17 6:06 ` [PATCH 3/9] blk-crypto: add a bio_crypt_ctx() helper Christoph Hellwig
2025-12-19 19:50 ` Eric Biggers
2025-12-17 6:06 ` [PATCH 4/9] blk-crypto: submit the encrypted bio in blk_crypto_fallback_bio_prep Christoph Hellwig
2025-12-19 19:50 ` Eric Biggers
2025-12-17 6:06 ` [PATCH 5/9] blk-crypto: optimize bio splitting in blk_crypto_fallback_encrypt_bio Christoph Hellwig
2025-12-19 20:08 ` Eric Biggers
2025-12-22 22:12 ` Christoph Hellwig
2025-12-17 6:06 ` [PATCH 6/9] blk-crypto: use on-stack skcipher requests for fallback en/decryption Christoph Hellwig
2025-12-17 6:06 ` [PATCH 7/9] blk-crypto: use mempool_alloc_bulk for encrypted bio page allocation Christoph Hellwig
2025-12-19 20:02 ` Eric Biggers
2025-12-19 20:25 ` Eric Biggers
2025-12-22 22:16 ` Christoph Hellwig
2025-12-22 22:18 ` Christoph Hellwig [this message]
2026-01-06 7:39 ` Christoph Hellwig
2025-12-17 6:06 ` [PATCH 8/9] blk-crypto: optimize data unit alignment checking Christoph Hellwig
2025-12-19 20:14 ` Eric Biggers
2025-12-17 6:06 ` [PATCH 9/9] blk-crypto: handle the fallback above the block layer Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2026-01-09 6:07 move blk-crypto-fallback to sit above the block layer v5 Christoph Hellwig
2026-01-09 6:07 ` [PATCH 7/9] blk-crypto: use mempool_alloc_bulk for encrypted bio page allocation Christoph Hellwig
2026-01-06 7:36 move blk-crypto-fallback to sit above the block layer v4 Christoph Hellwig
2026-01-06 7:36 ` [PATCH 7/9] blk-crypto: use mempool_alloc_bulk for encrypted bio page allocation Christoph Hellwig
2026-01-08 0:22 ` Eric Biggers
2026-01-08 9:31 ` Christoph Hellwig
2025-12-10 15:23 move blk-crypto-fallback to sit above the block layer v2 Christoph Hellwig
2025-12-10 15:23 ` [PATCH 7/9] blk-crypto: use mempool_alloc_bulk for encrypted bio page allocation Christoph Hellwig
2025-12-13 1:21 ` Eric Biggers
2025-12-15 6:01 ` Christoph Hellwig
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