vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2003 Sistina Software
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* Copyright (C) 2004 - 2008 Red Hat, Inc. All rights reserved.
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*
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* Device-Mapper low-level I/O.
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*
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* This file is released under the GPL.
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*/
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#ifndef _LINUX_DM_IO_H
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#define _LINUX_DM_IO_H
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#ifdef __KERNEL__
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#include <linux/types.h>
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#include <linux/blk_types.h>
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struct dm_io_region {
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struct block_device *bdev;
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sector_t sector;
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sector_t count; /* If this is zero the region is ignored. */
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};
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struct page_list {
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struct page_list *next;
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struct page *page;
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};
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typedef void (*io_notify_fn)(unsigned int long error, void *context);
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enum dm_io_mem_type {
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DM_IO_PAGE_LIST,/* Page list */
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DM_IO_BIO, /* Bio vector */
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DM_IO_VMA, /* Virtual memory area */
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DM_IO_KMEM, /* Kernel memory */
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};
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struct dm_io_memory {
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enum dm_io_mem_type type;
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unsigned int offset;
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union {
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struct page_list *pl;
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struct bio *bio;
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void *vma;
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void *addr;
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} ptr;
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};
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struct dm_io_notify {
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io_notify_fn fn; /* Callback for asynchronous requests */
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void *context; /* Passed to callback */
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};
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/*
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* IO request structure
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*/
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struct dm_io_client;
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struct dm_io_request {
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blk_opf_t bi_opf; /* Request type and flags */
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struct dm_io_memory mem; /* Memory to use for io */
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struct dm_io_notify notify; /* Synchronous if notify.fn is NULL */
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struct dm_io_client *client; /* Client memory handler */
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};
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/*
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* For async io calls, users can alternatively use the dm_io() function below
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* and dm_io_client_create() to create private mempools for the client.
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*
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* Create/destroy may block.
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*/
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struct dm_io_client *dm_io_client_create(void);
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void dm_io_client_destroy(struct dm_io_client *client);
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/*
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* IO interface using private per-client pools.
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* Each bit in the optional 'sync_error_bits' bitset indicates whether an
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* error occurred doing io to the corresponding region.
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*/
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int dm_io(struct dm_io_request *io_req, unsigned int num_regions,
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struct dm_io_region *region, unsigned int long *sync_error_bits,
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unsigned short ioprio);
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#endif /* __KERNEL__ */
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#endif /* _LINUX_DM_IO_H */
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