| /linux/Documentation/admin-guide/device-mapper/ |
| H A D | snapshot.rst | 12 - To merge a snapshot of a block device back into the snapshot's origin
20 the origin device.
24 snapshot, snapshot-origin, and snapshot-merge.
26 - snapshot-origin <origin>
34 - snapshot <origin> <COW device> <persistent?> <chunksize>
37 A snapshot of the <origin> block device is created. Changed chunks of
40 from <origin> for unchanged data. <COW device> will often be
41 smaller than the origin and if it fills up the snapshot will become
55 snapshot-origin or snapshot-merge target must be suspended. A failure to
56 suspend the origin target could result in data corruption.
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| H A D | cache.rst | 39 The origin device always contains a copy of the logical block, which
52 1. An origin device - the big, slow one.
66 The origin is divided up into blocks of a fixed size. This block size
89 complete until it has hit both the origin and cache devices. Clean
93 to be coherent with the origin device, then all reads are served from
94 the origin device (all reads miss the cache) and all writes are
95 forwarded to the origin device; additionally, write hits cause cache
121 Migrating data between the origin and cache device uses bandwidth.
170 state for all of the origin device (compare with the dirty bitset
181 cache <metadata dev> <cache dev> <origin dev> <block size>
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| H A D | thin-provisioning.rst | 186 N.B. If the origin device that you wish to snapshot is active, you
197 identifier for the origin device.
202 between the origin and the snapshot. Indeed the snapshot is no
216 You can use an external **read only** device as an origin for a
218 thin device will be passed through to the origin. Writes trigger
225 You must not write to the origin device if you use this technique!
232 You don't mention the origin at this stage.
240 Append an extra parameter to the thin target specifying the origin::
245 same extra origin parameter.
364 create_snap <dev id> <origin id>
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| /linux/mm/kmsan/ |
| H A D | instrumentation.c | 49 /* Get shadow and origin pointers for a memory load with non-standard size. */
59 /* Get shadow and origin pointers for a memory store with non-standard size. */
70 * Declare functions that obtain shadow/origin pointers for loads and stores
135 * get_param0_metadata() and set_retval_metadata() to store the shadow/origin
140 depot_stack_handle_t *origin) in get_param0_metadata() argument
145 *origin = ctx->cstate.param_origin_tls[0]; in get_param0_metadata()
148 static inline void set_retval_metadata(u64 shadow, depot_stack_handle_t origin) in set_retval_metadata() argument
153 ctx->cstate.retval_origin_tls = origin; in set_retval_metadata()
160 depot_stack_handle_t origin; in __msan_memmove() local
164 get_param0_metadata(&shadow, &origin); in __msan_memmove()
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| H A D | init.c | 100 struct page *shadow, *origin; member
110 * time - as an origin block. On the third time the incoming block receives its
111 * shadow and origin ranges from the previously saved shadow and origin blocks,
119 struct page *shadow, *origin; in kmsan_memblock_free_pages() local
125 if (!held_back[order].origin) { in kmsan_memblock_free_pages()
126 held_back[order].origin = page; in kmsan_memblock_free_pages()
130 origin = held_back[order].origin; in kmsan_memblock_free_pages()
131 kmsan_setup_meta(page, shadow, origin, order); in kmsan_memblock_free_pages()
134 held_back[order].origin = NULL; in kmsan_memblock_free_pages()
171 struct page *page, *shadow, *origin; in do_collection() local
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| H A D | core.c | 136 * origin value. in kmsan_internal_memmove_metadata()
172 * are copied around many times. Origin chains for such structures are in kmsan_internal_chain_origin()
195 u32 origin, bool checked) in kmsan_internal_set_shadow_origin() argument
206 * and origin pages are NULL, or all are non-NULL. in kmsan_internal_set_shadow_origin()
227 * If the new origin is non-zero, assume that the shadow byte is also non-zero, in kmsan_internal_set_shadow_origin()
228 * and unconditionally overwrite the old origin slot. in kmsan_internal_set_shadow_origin()
229 * If the new origin is zero, overwrite the old origin slot iff the in kmsan_internal_set_shadow_origin()
233 if (origin || !shadow_start[i]) in kmsan_internal_set_shadow_origin()
234 origin_start[i] = origin; in kmsan_internal_set_shadow_origin()
257 depot_stack_handle_t *origin = NULL; in kmsan_internal_check_memory() local
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| H A D | shadow.c | 102 ret.origin = kmsan_get_metadata(address, KMSAN_META_ORIGIN); in kmsan_get_shadow_origin_ptr()
109 ret.origin = dummy_store_page; in kmsan_get_shadow_origin_ptr()
113 ret.origin = dummy_load_page; in kmsan_get_shadow_origin_ptr()
119 * Obtain the shadow or origin pointer for the given address, or NULL if there's
173 struct page *shadow, *origin; in kmsan_alloc_page() local
181 origin = origin_page_for(page); in kmsan_alloc_page()
185 __memset(page_address(origin), 0, PAGE_SIZE * pages); in kmsan_alloc_page()
199 * to just fill the origin pages with @handle. in kmsan_alloc_page()
202 ((depot_stack_handle_t *)page_address(origin))[i] = handle; in kmsan_alloc_page()
277 void *shadow, *origin; in kmsan_init_alloc_meta_for_range() local
302 kmsan_setup_meta(struct page * page,struct page * shadow,struct page * origin,int order) kmsan_setup_meta() argument
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| H A D | hooks.c | 145 * This function creates new shadow/origin pages for the physical pages mapped
146 * into the virtual memory. If those physical pages already had shadow/origin,
154 struct page *shadow, *origin; in kmsan_ioremap_page_range() local
165 origin = alloc_pages(gfp_mask, 1); in kmsan_ioremap_page_range()
166 if (!shadow || !origin) { in kmsan_ioremap_page_range()
181 vmalloc_origin(start + off + PAGE_SIZE), prot, &origin, in kmsan_ioremap_page_range()
190 origin = NULL; in kmsan_ioremap_page_range()
198 * Something went wrong. Clean up shadow/origin pages allocated in kmsan_ioremap_page_range()
204 if (origin) in kmsan_ioremap_page_range()
205 __free_pages(origin, 1); in kmsan_ioremap_page_range()
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| H A D | report.c | 86 void kmsan_print_origin(depot_stack_handle_t origin) in kmsan_print_origin() argument
96 if (!origin) in kmsan_print_origin()
100 nr_entries = stack_depot_fetch(origin, &entries); in kmsan_print_origin()
101 depth = kmsan_depth_from_eb(stack_depot_get_extra_bits(origin)); in kmsan_print_origin()
117 * Origin chains deeper than KMSAN_MAX_ORIGIN_DEPTH are in kmsan_print_origin()
123 origin = entries[2]; in kmsan_print_origin()
150 void kmsan_report(depot_stack_handle_t origin, void *address, int size, in kmsan_report() argument
164 if (!origin) in kmsan_report()
171 is_uaf = kmsan_uaf_from_eb(stack_depot_get_extra_bits(origin)); in kmsan_report()
196 kmsan_print_origin(origin); in kmsan_report()
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| H A D | kmsan.h | 42 void *shadow, *origin; member
55 void kmsan_print_origin(depot_stack_handle_t origin);
59 * @origin: Stack ID of the uninitialized value.
69 * sharing the same origin. If an uninitialized value is used in a comparison,
73 * @off_last corresponding to different @origin values.
75 void kmsan_report(depot_stack_handle_t origin, void *address, int size,
129 * Pack and unpack the origin chain depth and UAF flag to/from the extra bits
160 u32 origin, bool checked);
171 struct page *origin, int order);
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| /linux/fs/overlayfs/ |
| H A D | namei.c | 73 * A non-dir origin may be disconnected, which is fine, because in ovl_acceptable()
91 * Return -ENODATA for "origin unknown".
102 /* Treat larger version and unknown flags as "origin unknown" */ in ovl_check_fb_len()
106 /* Treat endianness mismatch as "origin unknown" */ in ovl_check_fb_len()
126 /* Zero size value means "copied up but origin unknown" */ in ovl_get_fh()
152 pr_warn_ratelimited("failed to get origin (%i)\n", res); in ovl_get_fh()
155 pr_warn_ratelimited("invalid origin (%*phN)\n", res, fh); in ovl_get_fh()
184 * Treat stale file handle to lower file as "origin unknown". in ovl_decode_real_fh()
422 struct dentry *origin = NULL; in ovl_check_origin_fh() local
434 origin = ovl_decode_real_fh(ofs, fh, ofs->layers[i].mnt, in ovl_check_origin_fh()
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| H A D | export.c | 94 * have the same uppermost lower layer as the origin's layer. We may need to
98 * Return the connected origin layer or < 0 on error.
115 /* Find the topmost origin layer connectable ancestor of @dentry */ in ovl_connect_layer()
125 * If @parent is not origin layer connectable, then copy up in ovl_connect_layer()
126 * @next which is origin layer connectable and we are done. in ovl_connect_layer()
152 * We only need to encode origin if there is a chance that the same object was
213 * Decoding a merge dir, whose origin's ancestor is under a redirected in ovl_check_encode_origin()
215 * ovl_connect_layer() will try to make origin's layer "connected" by in ovl_check_encode_origin()
448 * For decoded lower dir file handle, lookup index by origin to check in ovl_lookup_real_inode()
697 struct ovl_path origin = { }; in ovl_lower_fh_to_d() local
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| /linux/drivers/gpu/drm/i915/display/ |
| H A D | intel_frontbuffer.c | 76 * @origin: which operation caused the flush
86 enum fb_op_origin origin) in frontbuffer_flush() argument
98 trace_intel_frontbuffer_flush(display, frontbuffer_bits, origin); in frontbuffer_flush()
103 intel_psr_flush(display, frontbuffer_bits, origin); in frontbuffer_flush()
104 intel_fbc_flush(i915, frontbuffer_bits, origin); in frontbuffer_flush()
175 enum fb_op_origin origin, in __intel_fb_invalidate() argument
181 if (origin == ORIGIN_CS) { in __intel_fb_invalidate()
188 trace_intel_frontbuffer_invalidate(display, frontbuffer_bits, origin); in __intel_fb_invalidate()
191 intel_psr_invalidate(display, frontbuffer_bits, origin); in __intel_fb_invalidate()
193 intel_fbc_invalidate(i915, frontbuffer_bits, origin); in __intel_fb_invalidate()
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| H A D | intel_display_trace.h | 703 unsigned int frontbuffer_bits, unsigned int origin),
704 TP_ARGS(display, frontbuffer_bits, origin),
709 __field(unsigned int, origin)
715 __entry->origin = origin;
718 TP_printk("dev %s, frontbuffer_bits=0x%08x, origin=%u",
719 __get_str(dev), __entry->frontbuffer_bits, __entry->origin)
724 unsigned int frontbuffer_bits, unsigned int origin),
725 TP_ARGS(display, frontbuffer_bits, origin),
730 __field(unsigned int, origin)
736 __entry->origin = origin;
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| /linux/drivers/infiniband/hw/hns/ |
| H A D | hns_roce_common.h | 42 #define roce_get_field(origin, mask, shift) \ argument
43 ((le32_to_cpu(origin) & (mask)) >> (u32)(shift))
45 #define roce_get_bit(origin, shift) \ argument
46 roce_get_field((origin), (1ul << (shift)), (shift))
48 #define roce_set_field(origin, mask, shift, val) \ argument
50 (origin) &= ~cpu_to_le32(mask); \
51 (origin) |= \
55 #define roce_set_bit(origin, shift, val) \ argument
56 roce_set_field((origin), (1ul << (shift)), (shift), (val))
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| /linux/drivers/gpu/drm/i915/gem/ |
| H A D | i915_gem_object_frontbuffer.h | 16 enum fb_op_origin origin);
18 enum fb_op_origin origin);
22 enum fb_op_origin origin) in i915_gem_object_flush_frontbuffer() argument
25 __i915_gem_object_flush_frontbuffer(obj, origin); in i915_gem_object_flush_frontbuffer()
30 enum fb_op_origin origin) in i915_gem_object_invalidate_frontbuffer() argument
33 __i915_gem_object_invalidate_frontbuffer(obj, origin); in i915_gem_object_invalidate_frontbuffer()
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| /linux/fs/netfs/ |
| H A D | objects.c | 19 enum netfs_io_origin origin) in netfs_alloc_request() argument
39 rreq->origin = origin; in netfs_alloc_request()
54 if (origin == NETFS_READAHEAD || in netfs_alloc_request()
55 origin == NETFS_READPAGE || in netfs_alloc_request()
56 origin == NETFS_READ_GAPS || in netfs_alloc_request()
57 origin == NETFS_READ_SINGLE || in netfs_alloc_request()
58 origin == NETFS_READ_FOR_WRITE || in netfs_alloc_request()
59 origin == NETFS_DIO_READ) { in netfs_alloc_request()
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| /linux/fs/9p/ |
| H A D | vfs_addr.c | 80 if (subreq->rreq->origin != NETFS_DIO_READ) in v9fs_issue_read()
101 bool writing = (rreq->origin == NETFS_READ_FOR_WRITE || in v9fs_init_request()
102 rreq->origin == NETFS_WRITETHROUGH || in v9fs_init_request()
103 rreq->origin == NETFS_UNBUFFERED_WRITE || in v9fs_init_request()
104 rreq->origin == NETFS_DIO_WRITE); in v9fs_init_request()
106 if (rreq->origin == NETFS_WRITEBACK) in v9fs_init_request()
130 WARN_ON(rreq->origin == NETFS_READ_FOR_WRITE && !(fid->mode & P9_ORDWR)); in v9fs_init_request()
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| /linux/security/loadpin/ |
| H A D | loadpin.c | 27 static void report_load(const char *origin, struct file *file, char *operation) in report_load() argument
35 origin, operation, in report_load()
132 const char *origin = kernel_read_file_id_str(id); in loadpin_check() local
139 report_load(origin, file, "pinning-excluded"); in loadpin_check()
146 report_load(origin, NULL, "old-api-pinning-ignored"); in loadpin_check()
150 report_load(origin, NULL, "old-api-denied"); in loadpin_check()
173 report_load(origin, file, "pinned"); in loadpin_check()
179 report_load(origin, file, "pinning-ignored"); in loadpin_check()
183 report_load(origin, file, "denied"); in loadpin_check()
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| /linux/drivers/gpu/drm/xe/ |
| H A D | xe_gt_sriov_pf_monitor.c | 46 char origin[8]; in pf_handle_vf_threshold_event() local
50 xe_sriov_function_name(vfid, origin, sizeof(origin)); in pf_handle_vf_threshold_event()
55 threshold, origin); in pf_handle_vf_threshold_event()
60 origin, xe_gt_sriov_pf_config_get_threshold(gt, vfid, e), in pf_handle_vf_threshold_event()
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| /linux/arch/s390/mm/ |
| H A D | pgalloc.c | 279 static int base_page_walk(unsigned long *origin, unsigned long addr, in base_page_walk() argument
286 pte = origin; in base_page_walk()
295 static int base_segment_walk(unsigned long *origin, unsigned long addr, in base_segment_walk() argument
301 ste = origin; in base_segment_walk()
324 static int base_region3_walk(unsigned long *origin, unsigned long addr, in base_region3_walk() argument
330 rtte = origin; in base_region3_walk()
352 static int base_region2_walk(unsigned long *origin, unsigned long addr, in base_region2_walk() argument
358 rste = origin; in base_region2_walk()
380 static int base_region1_walk(unsigned long *origin, unsigned long addr, in base_region1_walk() argument
386 rfte = origin; in base_region1_walk()
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| /linux/drivers/net/ethernet/hisilicon/hns/ |
| H A D | hns_dsaf_reg.h | 1043 #define dsaf_set_field(origin, mask, shift, val) \ argument
1045 (origin) &= (~(mask)); \
1046 (origin) |= (((val) << (shift)) & (mask)); \
1049 #define dsaf_set_bit(origin, shift, val) \ argument
1050 dsaf_set_field((origin), (1ull << (shift)), (shift), (val))
1055 u32 origin = dsaf_read_reg(base, reg); in dsaf_set_reg_field() local
1057 dsaf_set_field(origin, mask, shift, val); in dsaf_set_reg_field()
1058 dsaf_write_reg(base, reg, origin); in dsaf_set_reg_field()
1067 #define dsaf_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift)) argument
1069 #define dsaf_get_bit(origin, shift) \ argument
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| /linux/drivers/net/ethernet/hisilicon/ |
| H A D | hns_mdio.c | 108 #define mdio_set_field(origin, mask, shift, val) \ argument
110 (origin) &= (~((mask) << (shift))); \
111 (origin) |= (((val) & (mask)) << (shift)); \
114 #define mdio_get_field(origin, mask, shift) (((origin) >> (shift)) & (mask)) argument
119 u32 origin = mdio_read_reg(base, reg); in mdio_set_reg_field() local
121 mdio_set_field(origin, mask, shift, val); in mdio_set_reg_field()
122 mdio_write_reg(base, reg, origin); in mdio_set_reg_field()
130 u32 origin; in mdio_get_reg_field() local
132 origin = mdio_read_reg(base, reg); in mdio_get_reg_field()
133 return mdio_get_field(origin, mask, shift); in mdio_get_reg_field()
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| /linux/drivers/crypto/intel/qat/qat_common/ |
| H A D | adf_pfvf_msg.h | 34 * | | Message Origin
45 * | | Message Origin
49 * Message Origin (Should always be 1)
51 * by this driver; these had a Msg Origin of 0 and are ignored by this driver.
66 * Both the Interrupt bit and the Message Origin bit retain the same position
77 * | | Message Origin
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| /linux/block/partitions/ |
| H A D | msdos.c | 251 sector_t offset, sector_t size, int origin) in parse_solaris_x86() argument
269 snprintf(tmp, sizeof(tmp), " %s%d: <solaris:", state->name, origin); in parse_solaris_x86()
356 sector_t offset, sector_t size, int origin, char *flavour, in parse_bsd() argument
372 snprintf(tmp, sizeof(tmp), " %s%d: <%s:", state->name, origin, flavour); in parse_bsd()
410 sector_t offset, sector_t size, int origin) in parse_freebsd() argument
413 parse_bsd(state, offset, size, origin, "bsd", BSD_MAXPARTITIONS); in parse_freebsd()
418 sector_t offset, sector_t size, int origin) in parse_netbsd() argument
421 parse_bsd(state, offset, size, origin, "netbsd", BSD_MAXPARTITIONS); in parse_netbsd()
426 sector_t offset, sector_t size, int origin) in parse_openbsd() argument
429 parse_bsd(state, offset, size, origin, "openbsd", in parse_openbsd()
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