| /Linux-v5.15/Documentation/admin-guide/device-mapper/ |
| D | dm-ebs.rst | 7 a smaller logical block size on a device with a larger logical block
11 Supported emulated logical block sizes 512, 1024, 2048 and 4096.
29 Number of sectors defining the logical block size to be emulated;
35 Number of sectors defining the logical block size of <dev path>.
37 If not provided, the logical block size of <dev path> will be used.
42 Emulate 1 sector = 512 bytes logical block size on /dev/sda starting at
47 Emulate 2 sector = 1KiB logical block size on /dev/sda starting at
49 This presumes 2KiB logical blocksize on /dev/sda or less to work:
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| /Linux-v5.15/Documentation/usb/ |
| D | mass-storage.rst | 10 multiple logical units (LUNs). Backing storage for each LUN is
41 backing storage for each logical unit. There may be at most
48 read, but (if the logical unit is writable) due to buffering on
51 The size of the logical unit will be rounded down to a full
52 logical block. The logical block size is 2048 bytes for LUNs
58 This parameter specifies whether each logical unit should be
62 If this option is set for a logical unit, gadget will accept an
64 backing file will be closed to simulate ejection and the logical
69 If a logical unit is not removable (the default), a backing file
81 Note that “removable” means the logical unit's media can be
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| /Linux-v5.15/fs/btrfs/ |
| D | reada.c | 54 u64 logical; member
91 static int reada_add_block(struct reada_control *rc, u64 logical,
229 static struct reada_zone *reada_find_zone(struct btrfs_device *dev, u64 logical, in reada_find_zone() argument
243 logical >> fs_info->sectorsize_bits, 1); in reada_find_zone()
244 if (ret == 1 && logical >= zone->start && logical <= zone->end) { in reada_find_zone()
252 cache = btrfs_lookup_block_group(fs_info, logical); in reada_find_zone()
292 logical >> fs_info->sectorsize_bits, 1); in reada_find_zone()
293 if (ret == 1 && logical >= zone->start && logical <= zone->end) in reada_find_zone()
305 u64 logical, in reada_find_extent() argument
318 unsigned long index = logical >> fs_info->sectorsize_bits; in reada_find_extent()
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| D | scrub.c | 71 u64 logical; member
89 u64 logical; member
202 u64 logical; member
208 u64 logical; member
235 static int scrub_pages(struct scrub_ctx *sctx, u64 logical, u32 len,
330 if (fstripe_logical < entry->logical) { in insert_full_stripe_lock()
332 } else if (fstripe_logical > entry->logical) { in insert_full_stripe_lock()
346 ret->logical = fstripe_logical; in insert_full_stripe_lock()
373 if (fstripe_logical < entry->logical) in search_full_stripe_lock()
375 else if (fstripe_logical > entry->logical) in search_full_stripe_lock()
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| D | tree-mod-log.c | 7 u64 logical; member
13 u64 logical; member
146 if (cur->logical < tm->logical) in tree_mod_log_insert()
148 else if (cur->logical > tm->logical) in tree_mod_log_insert()
209 tm->logical = eb->start; in alloc_tree_mod_elem()
271 tm->logical = eb->start; in btrfs_tree_mod_log_insert_move()
381 tm->logical = new_root->start; in btrfs_tree_mod_log_insert_root()
382 tm->old_root.logical = old_root->start; in btrfs_tree_mod_log_insert_root()
427 if (cur->logical < start) { in __tree_mod_log_search()
429 } else if (cur->logical > start) { in __tree_mod_log_search()
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| D | volumes.h | 314 u64 logical; member
443 u64 logical, u64 *length,
446 u64 logical, u64 *length,
449 enum btrfs_map_op op, u64 logical,
478 int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
509 u64 logical, u64 len);
511 u64 logical);
516 u64 logical, u64 length);
583 int btrfs_repair_one_zone(struct btrfs_fs_info *fs_info, u64 logical);
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| D | zoned.c | 1035 u64 logical = cache->start; in btrfs_load_block_group_zone_info() local
1052 logical, length, fs_info->zone_size); in btrfs_load_block_group_zone_info()
1058 em = lookup_extent_mapping(em_tree, logical, length); in btrfs_load_block_group_zone_info()
1225 logical, last_alloc, cache->alloc_offset); in btrfs_load_block_group_zone_info()
1345 u64 *logical = NULL; in btrfs_rewrite_logical_zoned() local
1354 ordered->physical, &logical, &nr, in btrfs_rewrite_logical_zoned()
1360 if (orig_logical == *logical) in btrfs_rewrite_logical_zoned()
1363 ordered->disk_bytenr = *logical; in btrfs_rewrite_logical_zoned()
1369 em->block_start = *logical; in btrfs_rewrite_logical_zoned()
1374 if (*logical < orig_logical) in btrfs_rewrite_logical_zoned()
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| D | tree-checker.c | 711 const struct btrfs_chunk *chunk, u64 logical, in chunk_err() argument
744 logical, &vaf); in chunk_err()
749 logical, &vaf); in chunk_err()
760 struct btrfs_chunk *chunk, u64 logical) in btrfs_check_chunk_valid() argument
785 chunk_err(leaf, chunk, logical, in btrfs_check_chunk_valid()
790 chunk_err(leaf, chunk, logical, in btrfs_check_chunk_valid()
796 chunk_err(leaf, chunk, logical, in btrfs_check_chunk_valid()
801 if (unlikely(!IS_ALIGNED(logical, fs_info->sectorsize))) { in btrfs_check_chunk_valid()
802 chunk_err(leaf, chunk, logical, in btrfs_check_chunk_valid()
804 logical, fs_info->sectorsize); in btrfs_check_chunk_valid()
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| D | zoned.h | 65 int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
68 u64 logical, u64 length);
189 u64 logical, u64 physical_start, in btrfs_sync_zone_write_pointer() argument
197 u64 logical, u64 length) in btrfs_zoned_get_device() argument
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| /Linux-v5.15/Documentation/ABI/testing/ |
| D | sysfs-bus-pci-devices-cciss | 5 Description: Displays the SCSI INQUIRY page 0 model for logical drive
12 Description: Displays the SCSI INQUIRY page 0 revision for logical
19 Description: Displays the SCSI INQUIRY page 83 serial number for logical
26 Description: Displays the SCSI INQUIRY page 0 vendor for logical drive
39 Description: Kicks of a rescan of the controller to discover logical
46 Description: Displays the 8-byte LUN ID used to address logical
53 Description: Displays the RAID level of logical drive Y of
60 Description: Displays the usage count (number of opens) of logical drive Y
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| D | sysfs-block | 90 by one integrity tuple. Typically the device's logical
106 bigger than the logical block size (for instance a drive
107 with 4KB physical sectors exposing 512-byte logical
117 bigger than the logical block size (for instance a drive
118 with 4KB physical sectors exposing 512-byte logical
135 write atomically. It is usually the same as the logical
137 drives with 4KB sectors that expose a 512-byte logical
189 the exported logical block size. The discard_alignment
200 the exported logical block size. The discard_alignment
211 than the logical block size. The discard_granularity
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| /Linux-v5.15/Documentation/userspace-api/media/cec/ |
| D | cec-ioc-adap-g-log-addrs.rst | 15 CEC_ADAP_G_LOG_ADDRS, CEC_ADAP_S_LOG_ADDRS - Get or set the logical addresses
40 To query the current CEC logical addresses, applications call
42 struct :c:type:`cec_log_addrs` where the driver stores the logical addresses.
44 To set new logical addresses, applications fill in
52 To clear existing logical addresses set ``num_log_addrs`` to 0. All other fields
58 then this ioctl will block until all requested logical
60 not wait for the logical addresses to be claimed, instead it just returns 0.
63 logical addresses are claimed or cleared.
66 logical address types are already defined will return with error ``EBUSY``.
81 - The actual logical addresses that were claimed. This is set by the
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| /Linux-v5.15/Documentation/i2c/ |
| D | i2c-sysfs.rst | 12 kernel abstracts the MUX channels into logical I2C bus numbers. However, there
14 to logical I2C bus number. This doc is aimed to fill in this gap, so the
16 the concept of logical I2C buses in the kernel, by knowing the physical I2C
41 start with ``i2c-`` are I2C buses, which may be either physical or logical. The
81 Every I2C bus number you see in Linux I2C Sysfs is a logical I2C bus with a
85 Each logical I2C bus may be an abstraction of a physical I2C bus controller, or
87 MUX channel, whenever we access an I2C device via a such logical bus, the kernel
94 If the logical I2C bus is a direct abstraction of a physical I2C bus controller,
102 to a different number in logical I2C bus level in Device Tree Source (DTS) under
109 bus physical number the same as their corresponding logical I2C bus number,
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| /Linux-v5.15/Documentation/admin-guide/hw-vuln/ |
| D | special-register-buffer-data-sampling.rst | 66 staging buffer before the secret data can be accessed by another logical
70 accesses from other logical processors will be delayed until the special
78 #. Executing RDRAND at the same time on multiple logical processors will be
83 logical processors that miss their core caches, with an impact similar to
88 Software Guard Extensions (Intel SGX) enclaves. On logical processors that
90 take longer to execute and do not impact performance of sibling logical
102 Setting IA32_MCU_OPT_CTRL[0] (RNGDS_MITG_DIS) to 1 for a logical processor
104 enclave on that logical processor. Opting out of the mitigation for a
105 particular logical processor does not affect the RDRAND and RDSEED mitigations
106 for other logical processors.
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| /Linux-v5.15/Documentation/ABI/stable/ |
| D | sysfs-class-ubi | 38 Amount of available logical eraseblock. For example, one may
39 create a new UBI volume which has this amount of logical
70 Maximum logical eraseblock size this UBI device may provide. UBI
71 volumes may have smaller logical eraseblock size because of their
148 Volume alignment - the value the logical eraseblock size of
150 logical eraseblock size is multiple of 2048. In other words,
151 volume logical eraseblock size is UBI device logical eraseblock
192 Equivalent to the volume size in logical eraseblocks.
219 Logical eraseblock size of this volume. Equivalent to logical
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| /Linux-v5.15/drivers/video/fbdev/vermilion/ |
| D | vermilion.c | 89 va->logical = in vmlfb_alloc_vram_area()
91 } while (va->logical == 0 && max_order > min_order); in vmlfb_alloc_vram_area()
93 if (!va->logical) in vmlfb_alloc_vram_area()
96 va->phys = virt_to_phys((void *)va->logical); in vmlfb_alloc_vram_area()
107 memset((void *)va->logical, 0x00, va->size); in vmlfb_alloc_vram_area()
108 for (i = va->logical; i < va->logical + va->size; i += PAGE_SIZE) { in vmlfb_alloc_vram_area()
116 set_pages_uc(virt_to_page(va->logical), va->size >> PAGE_SHIFT); in vmlfb_alloc_vram_area()
134 if (va->logical) { in vmlfb_free_vram_area()
140 set_pages_wb(virt_to_page(va->logical), in vmlfb_free_vram_area()
148 for (j = va->logical; j < va->logical + va->size; in vmlfb_free_vram_area()
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| /Linux-v5.15/Documentation/gpu/rfc/ |
| D | i915_scheduler.rst | 104 * Export engines logical mapping
109 Export engines logical mapping
111 Certain use cases require BBs to be placed on engine instances in logical order
112 (e.g. split-frame on gen11+). The logical mapping of engine instances can change
114 logical mapping with the existing query engine info IOCTL. Also the GuC
116 engines in logical order which is a new requirement compared to execlists.
117 Lastly, all current platforms have at most 2 engine instances and the logical
122 logical instance has been returned and a new field,
123 drm_i915_engine_info.logical_instance, returns the logical instance.
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| /Linux-v5.15/Documentation/driver-api/ |
| D | isapnp.rst | 13 This directory allows access to ISA PnP cards and logical devices.
15 a logical device.
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| /Linux-v5.15/Documentation/filesystems/ext4/ |
| D | about.rst | 25 ext4 divides a storage device into an array of logical blocks both to
31 logical blocks, not raw LBAs, and not 1024-byte blocks. For the sake of
32 convenience, the logical block size will be referred to as
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| /Linux-v5.15/Documentation/driver-api/serial/ |
| D | serial-rs485.rst | 68 /* Set logical level for RTS pin equal to 1 when sending: */
70 /* or, set logical level for RTS pin equal to 0 when sending: */
73 /* Set logical level for RTS pin equal to 1 after sending: */
75 /* or, set logical level for RTS pin equal to 0 after sending: */
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| /Linux-v5.15/Documentation/driver-api/pm/ |
| D | cpuidle.rst | 16 Every time one of the logical CPUs in the system (the entities that appear to
21 belongs to. That can be done by making the idle logical CPU stop fetching
44 one of the logical CPUs in the system turns out to be idle. Its role is to
81 (logical) CPU represented by the struct cpuidle_device object pointed
99 Called to make the governor stop handling the (logical) CPU represented
113 Called to select an idle state for the processor holding the (logical)
168 the logical CPUs handled by the given driver.
211 representing the logical CPU running this callback and the
227 is, idle states that can only be asked for if multiple related logical CPUs are
230 asked for if only one logical CPU is idle).
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| /Linux-v5.15/Documentation/driver-api/media/ |
| D | cec-core.rst | 18 other through the HDMI connection. The protocol uses logical addresses in the
19 communication. The logical address is strictly connected with the functionality
66 the number of simultaneous logical addresses that this
133 means powering it up in a state where no logical addresses are claimed. The
168 To program a new logical address::
172 If logical_addr == CEC_LOG_ADDR_INVALID then all programmed logical addresses
173 are to be erased. Otherwise the given logical address should be programmed.
174 If the maximum number of available logical addresses is exceeded, then it
175 should return -ENXIO. Once a logical address is programmed the CEC hardware
408 claiming the logical addresses. If block is true, then this function won't
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| /Linux-v5.15/fs/freevxfs/ |
| D | Kconfig | 20 There is a userspace utility for HP-UX logical volumes which makes
21 creating HP-UX logical volumes easy from HP-UX disk block device file
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| /Linux-v5.15/Documentation/userspace-api/media/v4l/ |
| D | format.rst | 38 assigns a logical stream (video data, VBI data etc.) exclusively to one
47 multiple file descriptors which grabbed different logical streams
59 Generally only one logical stream can be assigned to a file descriptor,
62 earlier versions of V4L2. Switching the logical stream or returning into
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| /Linux-v5.15/Documentation/filesystems/ |
| D | fiemap.rst | 18 __u64 fm_start; /* logical offset (inclusive) at
20 __u64 fm_length; /* logical length of mapping which
31 fm_start, and fm_length specify the logical range within the file
33 those on disk - that is, the logical offset of the 1st returned extent
83 __u64 fe_logical; /* logical offset in bytes for the start of
94 for an extents logical offset to start before the request or its logical
226 int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical,
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