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/Linux-v5.10/Documentation/admin-guide/device-mapper/
Ddm-ebs.rst7 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:
/Linux-v5.10/Documentation/usb/
Dmass-storage.rst10 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-v5.10/fs/btrfs/
Dscrub.c70 u64 logical; member
90 u64 logical; member
199 u64 logical; member
205 u64 logical; member
238 static int scrub_pages(struct scrub_ctx *sctx, u64 logical, u64 len,
335 if (fstripe_logical < entry->logical) { in insert_full_stripe_lock()
337 } else if (fstripe_logical > entry->logical) { in insert_full_stripe_lock()
351 ret->logical = fstripe_logical; in insert_full_stripe_lock()
378 if (fstripe_logical < entry->logical) in search_full_stripe_lock()
380 else if (fstripe_logical > entry->logical) in search_full_stripe_lock()
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Dreada.c54 u64 logical; member
89 static int reada_add_block(struct reada_control *rc, u64 logical,
224 static struct reada_zone *reada_find_zone(struct btrfs_device *dev, u64 logical, in reada_find_zone() argument
238 logical >> PAGE_SHIFT, 1); in reada_find_zone()
239 if (ret == 1 && logical >= zone->start && logical <= zone->end) { in reada_find_zone()
247 cache = btrfs_lookup_block_group(fs_info, logical); in reada_find_zone()
287 logical >> PAGE_SHIFT, 1); in reada_find_zone()
288 if (ret == 1 && logical >= zone->start && logical <= zone->end) in reada_find_zone()
300 u64 logical, in reada_find_extent() argument
312 unsigned long index = logical >> PAGE_SHIFT; in reada_find_extent()
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Dvolumes.h292 u64 logical; member
420 u64 logical, u64 *length,
423 u64 logical, u64 *length,
426 u64 logical, u64 len, struct btrfs_io_geometry *io_geom);
452 int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
482 u64 logical, u64 len);
484 u64 logical);
489 u64 logical, u64 length);
Dtree-checker.c704 const struct btrfs_chunk *chunk, u64 logical, in chunk_err() argument
737 logical, &vaf); in chunk_err()
742 logical, &vaf); in chunk_err()
753 struct btrfs_chunk *chunk, u64 logical) in btrfs_check_chunk_valid() argument
777 chunk_err(leaf, chunk, logical, in btrfs_check_chunk_valid()
782 chunk_err(leaf, chunk, logical, in btrfs_check_chunk_valid()
788 chunk_err(leaf, chunk, logical, in btrfs_check_chunk_valid()
793 if (!IS_ALIGNED(logical, fs_info->sectorsize)) { in btrfs_check_chunk_valid()
794 chunk_err(leaf, chunk, logical, in btrfs_check_chunk_valid()
796 logical, fs_info->sectorsize); in btrfs_check_chunk_valid()
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/Linux-v5.10/Documentation/ABI/testing/
Dsysfs-bus-pci-devices-cciss5 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
Dsysfs-block78 by one integrity tuple. Typically the device's logical
94 bigger than the logical block size (for instance a drive
95 with 4KB physical sectors exposing 512-byte logical
105 bigger than the logical block size (for instance a drive
106 with 4KB physical sectors exposing 512-byte logical
123 write atomically. It is usually the same as the logical
125 drives with 4KB sectors that expose a 512-byte logical
177 the exported logical block size. The discard_alignment
188 the exported logical block size. The discard_alignment
199 than the logical block size. The discard_granularity
/Linux-v5.10/Documentation/userspace-api/media/cec/
Dcec-ioc-adap-g-log-addrs.rst15 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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Dcec-ioc-adap-g-phys-addr.rst55 If logical address types have been defined (see :ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_AD…
57 requested logical addresses have been claimed. If the file descriptor is in non-blocking mode
58 then it will not wait for the logical addresses to be claimed, instead it just returns 0.
/Linux-v5.10/Documentation/admin-guide/hw-vuln/
Dspecial-register-buffer-data-sampling.rst65 staging buffer before the secret data can be accessed by another logical
69 accesses from other logical processors will be delayed until the special
77 #. Executing RDRAND at the same time on multiple logical processors will be
82 logical processors that miss their core caches, with an impact similar to
87 Software Guard Extensions (Intel SGX) enclaves. On logical processors that
89 take longer to execute and do not impact performance of sibling logical
101 Setting IA32_MCU_OPT_CTRL[0] (RNGDS_MITG_DIS) to 1 for a logical processor
103 enclave on that logical processor. Opting out of the mitigation for a
104 particular logical processor does not affect the RDRAND and RDSEED mitigations
105 for other logical processors.
/Linux-v5.10/Documentation/ABI/stable/
Dsysfs-class-ubi38 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
/Linux-v5.10/drivers/video/fbdev/vermilion/
Dvermilion.c89 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-v5.10/Documentation/driver-api/
Disapnp.rst13 This directory allows access to ISA PnP cards and logical devices.
15 a logical device.
Dlightnvm-pblk.rst7 - Map logical addresses onto physical addresses (4KB granularity) in a
8 logical-to-physical (L2P) table.
/Linux-v5.10/fs/
Dioctl.c112 int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical, in fiemap_fill_next_extent() argument
135 extent.fe_logical = logical; in fiemap_fill_next_extent()
301 u64 logical = 0, phys = 0, size = 0; in __generic_block_fiemap() local
363 ret = fiemap_fill_next_extent(fieinfo, logical, in __generic_block_fiemap()
367 ret = fiemap_fill_next_extent(fieinfo, logical, in __generic_block_fiemap()
392 ret = fiemap_fill_next_extent(fieinfo, logical, in __generic_block_fiemap()
403 ret = fiemap_fill_next_extent(fieinfo, logical, in __generic_block_fiemap()
410 logical = blk_to_logical(inode, start_blk); in __generic_block_fiemap()
422 if (!past_eof && logical + size >= isize) in __generic_block_fiemap()
/Linux-v5.10/Documentation/filesystems/ext4/
Dabout.rst25 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
/Linux-v5.10/Documentation/driver-api/serial/
Dserial-rs485.rst68 /* 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: */
/Linux-v5.10/Documentation/driver-api/pm/
Dcpuidle.rst16 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-v5.10/Documentation/driver-api/media/
Dcec-core.rst18 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. This
165 To program a new logical address::
169 If logical_addr == CEC_LOG_ADDR_INVALID then all programmed logical addresses
170 are to be erased. Otherwise the given logical address should be programmed.
171 If the maximum number of available logical addresses is exceeded, then it
172 should return -ENXIO. Once a logical address is programmed the CEC hardware
405 claiming the logical addresses. If block is true, then this function won't
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/Linux-v5.10/fs/freevxfs/
DKconfig20 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
/Linux-v5.10/Documentation/userspace-api/media/v4l/
Dformat.rst38 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
/Linux-v5.10/Documentation/filesystems/
Dfiemap.rst18 __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,
/Linux-v5.10/drivers/mtd/
Dinftlmount.c509 int logical, block, i; in INFTL_dumpVUchains() local
515 for (logical = 0; logical < s->nb_blocks; logical++) { in INFTL_dumpVUchains()
516 block = s->VUtable[logical]; in INFTL_dumpVUchains()
519 pr_debug(" LOGICAL %d --> %d ", logical, block); in INFTL_dumpVUchains()
/Linux-v5.10/drivers/gpu/drm/i915/display/
Dintel_cdclk.c2208 cdclk_state->logical.cdclk = cdclk; in vlv_modeset_calc_cdclk()
2209 cdclk_state->logical.voltage_level = in vlv_modeset_calc_cdclk()
2219 cdclk_state->actual = cdclk_state->logical; in vlv_modeset_calc_cdclk()
2239 cdclk_state->logical.cdclk = cdclk; in bdw_modeset_calc_cdclk()
2240 cdclk_state->logical.voltage_level = in bdw_modeset_calc_cdclk()
2250 cdclk_state->actual = cdclk_state->logical; in bdw_modeset_calc_cdclk()
2264 vco = cdclk_state->logical.vco; in skl_dpll0_vco()
2309 cdclk_state->logical.vco = vco; in skl_modeset_calc_cdclk()
2310 cdclk_state->logical.cdclk = cdclk; in skl_modeset_calc_cdclk()
2311 cdclk_state->logical.voltage_level = in skl_modeset_calc_cdclk()
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