From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- block/bio-integrity-fs.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 block/bio-integrity-fs.c (limited to 'block/bio-integrity-fs.c') diff --git a/block/bio-integrity-fs.c b/block/bio-integrity-fs.c new file mode 100644 index 000000000..9c5fe5fa8 --- /dev/null +++ b/block/bio-integrity-fs.c @@ -0,0 +1,85 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2025 Christoph Hellwig. + */ +#include +#include +#include "blk.h" + +struct fs_bio_integrity_buf { + struct bio_integrity_payload bip; + struct bio_vec bvec; +}; + +static struct kmem_cache *fs_bio_integrity_cache; +static mempool_t fs_bio_integrity_pool; + +unsigned int fs_bio_integrity_alloc(struct bio *bio) +{ + struct fs_bio_integrity_buf *iib; + unsigned int action; + + action = bio_integrity_action(bio); + if (!action) + return 0; + + iib = mempool_alloc(&fs_bio_integrity_pool, GFP_NOFS); + bio_integrity_init(bio, &iib->bip, &iib->bvec, 1); + + bio_integrity_alloc_buf(bio, GFP_NOFS, action & BI_ACT_ZERO); + if (action & BI_ACT_CHECK) + bio_integrity_setup_default(bio); + return action; +} + +void fs_bio_integrity_free(struct bio *bio) +{ + struct bio_integrity_payload *bip = bio_integrity(bio); + + bio_integrity_free_buf(bip); + mempool_free(container_of(bip, struct fs_bio_integrity_buf, bip), + &fs_bio_integrity_pool); + + bio->bi_integrity = NULL; + bio->bi_opf &= ~REQ_INTEGRITY; +} + +void fs_bio_integrity_generate(struct bio *bio) +{ + if (fs_bio_integrity_alloc(bio)) + bio_integrity_generate(bio); +} +EXPORT_SYMBOL_GPL(fs_bio_integrity_generate); + +int fs_bio_integrity_verify(struct bio *bio, sector_t sector, unsigned int size) +{ + struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk); + struct bio_integrity_payload *bip = bio_integrity(bio); + struct bvec_iter data_iter = { + .bi_sector = sector, + .bi_size = size, + }; + + /* + * Reinitialize bip->bip_iter. + * + * This is for use in the submitter after the driver is done with the + * bio. Requires the submitter to remember the sector and the size. + */ + memset(&bip->bip_iter, 0, sizeof(bip->bip_iter)); + bip->bip_iter.bi_sector = sector; + bip->bip_iter.bi_size = bio_integrity_bytes(bi, size >> SECTOR_SHIFT); + return blk_status_to_errno(bio_integrity_verify(bio, &data_iter)); +} + +static int __init fs_bio_integrity_init(void) +{ + fs_bio_integrity_cache = kmem_cache_create("fs_bio_integrity", + sizeof(struct fs_bio_integrity_buf), 0, + SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL); + if (mempool_init_slab_pool(&fs_bio_integrity_pool, BIO_POOL_SIZE, + fs_bio_integrity_cache)) + panic("fs_bio_integrity: can't create pool\n"); + return 0; +} +fs_initcall(fs_bio_integrity_init); -- cgit v1.3.1