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/Linux-v5.15/Documentation/filesystems/
Doverlayfs.rst26 non-directory objects may report an st_dev from the lower filesystem or
83 Upper and Lower
87 and a 'lower' filesystem. When a name exists in both filesystems, the
89 'lower' filesystem is either hidden or, in the case of directories,
92 It would be more correct to refer to an upper and lower 'directory
96 lower.
98 A wide range of filesystems supported by Linux can be the lower filesystem,
100 needed for OverlayFS to work. The lower filesystem does not need to be
101 writable. The lower filesystem can even be another overlayfs. The upper
113 upper and lower filesystems and refers to a non-directory in either,
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/Linux-v5.15/arch/mips/include/asm/
Dmaar.h30 * @lower: The lowest address that the MAAR pair will affect. Must be
38 * specified by attrs to the range of addresses from lower to higher.
40 static inline void write_maar_pair(unsigned idx, phys_addr_t lower, in write_maar_pair() argument
44 BUG_ON(lower & (0xffff | ~(MIPS_MAAR_ADDR << 4))); in write_maar_pair()
65 /* Write the lower address & attributes */ in write_maar_pair()
68 write_c0_maar((lower >> 4) | attrs); in write_maar_pair()
71 lower >>= MIPS_MAARX_ADDR_SHIFT; in write_maar_pair()
72 writex_c0_maar(((lower >> 4) & MIPS_MAARX_ADDR) | MIPS_MAARX_VH); in write_maar_pair()
88 * @lower: The lowest address that the MAAR pair will affect. Must be
97 * addresses from lower to upper inclusive.
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/Linux-v5.15/drivers/net/ethernet/aquantia/atlantic/hw_atl/
Dhw_atl_llh_internal.h111 /* lower bit position of bitfield itr_reg_res_dsbl */
121 /* lower bit position of bitfield itr_reset */
133 /* lower bit position of bitfield rsc_delay */
140 /* lower bit position of bitfield dca{d}_cpuid[7:0] */
156 /* lower bit position of bitfield dca_en */
174 /* lower bit position of bitfield dca_mode[3:0] */
194 /* lower bit position of bitfield desc{d}_data_size[4:0] */
213 /* lower bit position of bitfield dca{d}_desc_en */
232 /* lower bit position of bitfield desc{d}_en */
252 /* lower bit position of bitfield desc{d}_hdr_size[4:0] */
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/Linux-v5.15/drivers/thermal/
Dgov_step_wise.c25 * d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit
27 * If the temperature is lower than a trip point,
29 * b. if the trend is THERMAL_TREND_DROPPING, use lower cooling
31 * equals lower limit, deactivate the thermal instance
33 * d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit,
34 * if the cooling state already equals lower limit,
57 ((cur_state + 1) < instance->lower ? in get_target_state()
58 instance->lower : (cur_state + 1)); in get_target_state()
71 if (next_target < instance->lower) in get_target_state()
72 next_target = instance->lower; in get_target_state()
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/Linux-v5.15/fs/btrfs/
Dbackref.h179 /* List of lower level edges, which link this node to its children */
180 struct list_head lower; member
213 #define LOWER 0 macro
217 * Represent an edge connecting upper and lower backref nodes.
221 * list[LOWER] is linked to btrfs_backref_node::upper of lower level
222 * node, and list[UPPER] is linked to btrfs_backref_node::lower of
283 struct btrfs_backref_node *lower, in btrfs_backref_link_edge() argument
287 ASSERT(upper && lower && upper->level == lower->level + 1); in btrfs_backref_link_edge()
288 edge->node[LOWER] = lower; in btrfs_backref_link_edge()
291 list_add_tail(&edge->list[LOWER], &lower->upper); in btrfs_backref_link_edge()
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/Linux-v5.15/Documentation/filesystems/ext4/
Dgroup_descr.rst38 checksum is the lower 16 bits of the checksum of the FS UUID, the group
56 - Lower 32-bits of location of block bitmap.
60 - Lower 32-bits of location of inode bitmap.
64 - Lower 32-bits of location of inode table.
68 - Lower 16-bits of free block count.
72 - Lower 16-bits of free inode count.
76 - Lower 16-bits of directory count.
84 - Lower 32-bits of location of snapshot exclusion bitmap.
88 - Lower 16-bits of the block bitmap checksum.
92 - Lower 16-bits of the inode bitmap checksum.
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/Linux-v5.15/fs/overlayfs/
Dexport.c43 * lower decoded dentry. This is done by following the overlay ancestry up to a
53 * copied up and renamed, upper dir /a will be indexed by lower dir /a from
56 * dentry from the connected lower dentry /a/b/c.
61 * and when the time comes to decode the file handle from lower dentry /a/b/c,
66 * entry /a in the lower layers above layer N and find the indexed dir /a from
68 * will need to verify there are no redirects in lower layers above N. In the
87 * lower layer in ovl_connectable_layer()
93 /* We can get upper/overlay path from indexed/lower dentry */ in ovl_connectable_layer()
99 * have the same uppermost lower layer as the origin's layer. We may need to
174 * L = lower file handle
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Dinode.c183 * If lower filesystem supports NFS file handles, this also guaranties in ovl_getattr()
201 * Lower hardlinks may be broken on copy up to different in ovl_getattr()
202 * upper files, so we cannot use the lower origin st_ino in ovl_getattr()
206 * same dir on a lower layer. With the "verify_lower" in ovl_getattr()
207 * feature, we do not use the lower origin st_ino, if in ovl_getattr()
223 * If we are querying a metacopy dentry and lower in ovl_getattr()
226 * vfs_getattr(). If lower itself is metacopy, then in ovl_getattr()
238 * If lower is not same as lowerdata or if there was in ovl_getattr()
266 * and non-covered lower hardlinks. It does not include the upper in ovl_getattr()
562 * so children of "ovl-immutable" directories lower aliases of in ovl_fileattr_set()
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Dnamei.c43 * that will stop further lookup in lower layers (d->stop=true) in ovl_check_redirect()
45 * element and that should force continue lookup in lower in ovl_check_redirect()
163 * Make sure that the stored uuid matches the uuid of the lower in ovl_decode_real_fh()
177 * Treat stale file handle to lower file as "origin unknown". in ovl_decode_real_fh()
355 * If lower fs uuid is not unique among lower fs we cannot match in ovl_check_origin_fh()
514 * OVL_XATTR_ORIGIN and that origin file handle can be decoded to lower path.
634 * Lookup in indexdir for the index entry of a lower real inode or a copy up
635 * origin inode. The index entry name is the hex representation of the lower
638 * If the index dentry in negative, then either no lower aliases have been
737 * index should only exist if all lower aliases have been in ovl_lookup_index()
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/Linux-v5.15/arch/powerpc/mm/ptdump/
Dbats.c15 static void bat_show_603(struct seq_file *m, int idx, u32 lower, u32 upper, bool is_d) in bat_show_603() argument
20 phys_addr_t brpn = PHYS_BAT_ADDR(lower); in bat_show_603()
44 if (lower & BPP_RX) in bat_show_603()
46 else if (lower & BPP_RW) in bat_show_603()
51 seq_puts(m, lower & _PAGE_WRITETHRU ? "w " : " "); in bat_show_603()
52 seq_puts(m, lower & _PAGE_NO_CACHE ? "i " : " "); in bat_show_603()
53 seq_puts(m, lower & _PAGE_COHERENT ? "m " : " "); in bat_show_603()
54 seq_puts(m, lower & _PAGE_GUARDED ? "g " : " "); in bat_show_603()
/Linux-v5.15/fs/ecryptfs/
Dread_write.c19 * @offset: Byte offset in the lower file to which to write the data
20 * @size: Number of bytes from @data to write at @offset in the lower
23 * Write data to the lower file.
45 * lower file
49 * lower file
53 * the contents of @page_for_lower to the lower inode.
86 * written to the lower page cache (via VFS writes). This function
87 * takes care of all the address translation to locations in the lower
209 * @offset: Byte offset in the lower file from which to read the data
210 * @size: Number of bytes to read from @offset of the lower file and
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Dkthread.c38 * the lower file with RW permissions.
108 * @lower_file: Result of dentry_open by root on lower dentry
109 * @lower_dentry: Lower dentry for file to open
110 * @lower_mnt: Lower vfsmount for file to open
113 * This function gets a r/w file opened against the lower dentry.
132 * lower file is fput() when all eCryptfs files for the inode are in ecryptfs_privileged_open()
147 "aborting privileged request to open lower file\n", in ecryptfs_privileged_open()
Dmmap.c5 * decryption of the file data as it passes between the lower
28 * Get one page from cache or lower f/s, return error otherwise.
49 * the lower filesystem. In OpenPGP-compatible mode, we operate on
100 * @page: Sort of a ``virtual'' representation of the encrypted lower
101 * file. The actual lower file does not have the metadata in
160 "extent at offset [%lld] in the lower " in ecryptfs_copy_up_encrypted_with_header()
197 "the encrypted content from the lower " in ecryptfs_readpage()
234 * Called with lower inode mutex held.
290 "lower page segment; rc = [%d]\n", in ecryptfs_write_begin()
303 "from the lower file whilst " in ecryptfs_write_begin()
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/Linux-v5.15/drivers/staging/r8188eu/core/
Drtw_mp_ioctl.c54 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_write_bb_reg_hdl()
81 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_read_bb_reg_hdl()
119 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_write_rf_reg_hdl()
151 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_read_rf_reg_hdl()
184 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_set_data_rate_hdl()
203 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_start_test_hdl()
229 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_stop_test_hdl()
258 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_set_channel_direct_call_hdl()
286 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_set_bandwidth_hdl()
308 _irqlevel_changed_(&oldirql, LOWER); in rtl8188eu_oid_rt_pro_set_antenna_bb_hdl()
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/Linux-v5.15/net/tipc/
Dsubscr.c53 tipc_evt_write(evt, found_lower, p->sr.lower); in tipc_sub_send_event()
58 tipc_evt_write(evt, found_lower, s->seq.lower); in tipc_sub_send_event()
76 u32 found_lower = found->lower; in tipc_sub_check_overlap()
79 if (found_lower < subscribed->lower) in tipc_sub_check_overlap()
80 found_lower = subscribed->lower; in tipc_sub_check_overlap()
135 u32 lower = tipc_sub_read(s, seq.lower); in tipc_sub_subscribe() local
142 lower > upper) { in tipc_sub_subscribe()
158 sub->s.seq.lower = lower; in tipc_sub_subscribe()
Dname_table.c53 * @lower: service range lower bound
63 u32 lower; member
100 ((sr)->lower <= (end) && (sr)->upper >= (start)) in RB_DECLARE_CALLBACKS_MAX()
142 * subtree. If not, it has lower > end, then nodes on
158 if (sr->lower <= end &&
188 * subtree. If not, it has lower > end, then any next in service_range_match_next()
208 if (sr->lower <= end) { in service_range_match_next()
287 service_range_foreach_match(sr, sc, ua->sr.lower, ua->sr.upper) { in tipc_service_find_range()
289 if (sr->lower == ua->sr.lower && sr->upper == ua->sr.upper) in tipc_service_find_range()
301 u32 lower = p->sr.lower; in tipc_service_create_range() local
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/Linux-v5.15/drivers/net/ethernet/aquantia/atlantic/hw_atl2/
Dhw_atl2_llh_internal.h38 /* lower bit position of bitfield rpf_new_rpf_en */
57 /* lower bit position of bitfield l2_uc_req_tag0{f}[2:0] */
75 /* lower bit position of bitfield rpf_l2_bc_req_tag */
92 /* lower bit position of bitfield rpf_rss_red1_data[4:0] */
111 /* lower bit position of bitfield vlan_req_tag0{f}[3:0] */
127 /* Lower bit position of bitfield rx_q{Q}_tc_map[2:0] */
146 /* lower bit position of bitfield tx_tc_q_rand_map_en */
164 /* lower bit position of bitfield tx_buffer_clk_gate_en */
180 /* lower bit position of bitfield tx_q_tc_map{q} */
199 /* lower bit position of bitfield data_tc_arb_mode */
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/Linux-v5.15/arch/arm/kernel/
Dmodule.c88 u32 upper, lower, sign, j1, j2; in apply_relocate() local
235 lower = __mem_to_opcode_thumb16(*(u16 *)(loc + 2)); in apply_relocate()
246 * imm11 = lower[10:0] = offset[11:1] in apply_relocate()
247 * J1 = lower[13] in apply_relocate()
248 * J2 = lower[11] in apply_relocate()
251 j1 = (lower >> 13) & 1; in apply_relocate()
252 j2 = (lower >> 11) & 1; in apply_relocate()
256 ((lower & 0x07ff) << 1); in apply_relocate()
286 lower = (u16)((lower & 0xd000) | in apply_relocate()
291 *(u16 *)(loc + 2) = __opcode_to_mem_thumb16(lower); in apply_relocate()
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/Linux-v5.15/fs/ext4/
Dinode-test.c14 * For constructing the nonnegative timestamp lower bound value.
25 * For constructing the negative timestamp lower bound value.
43 "1901-12-13 Lower bound of 32bit < 0 timestamp, no extra bits"
47 "1970-01-01 Lower bound of 32bit >=0 timestamp, no extra bits"
51 "2038-01-19 Lower bound of 32bit <0 timestamp, lo extra sec bit on"
55 "2106-02-07 Lower bound of 32bit >=0 timestamp, lo extra sec bit on"
59 "2174-02-25 Lower bound of 32bit <0 timestamp, hi extra sec bit on"
63 "2242-03-16 Lower bound of 32bit >=0 timestamp, hi extra sec bit on"
69 "2378-04-22 Lower bound of 32bit>= timestamp. Extra sec bits 1. Max ns"
71 "2378-04-22 Lower bound of 32bit >=0 timestamp. All extra sec bits on"
/Linux-v5.15/drivers/power/supply/
Dbq27xxx_battery_hdq.c45 int upper, lower; in bq27xxx_battery_hdq_read() local
51 * lower and the upper part in bq27xxx_battery_hdq_read()
59 lower = w1_bq27000_read(sl, reg); in bq27xxx_battery_hdq_read()
60 if (lower < 0) in bq27xxx_battery_hdq_read()
61 return lower; in bq27xxx_battery_hdq_read()
69 return (upper << 8) | lower; in bq27xxx_battery_hdq_read()
/Linux-v5.15/arch/m68k/include/asm/
Damigahw.h279 unsigned int :28, second2:4; /* lower digit */
281 unsigned int :28, minute2:4; /* lower digit */
283 unsigned int :28, hour2:4; /* lower digit */
286 unsigned int :28, day2:4; /* lower digit */
288 unsigned int :28, month2:4; /* lower digit */
290 unsigned int :28, year2:4; /* lower digit */
301 unsigned int :28, second2:4; /* lower digit */
303 unsigned int :28, minute2:4; /* lower digit */
305 unsigned int :28, hour2:4; /* lower digit */
307 unsigned int :28, day2:4; /* lower digit */
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/Linux-v5.15/arch/sh/include/asm/
Dwatchdog.h39 * lower than WTCSR_CKS_1024, else we drop back into the usec range.
75 * Writes the given value @val to the lower byte of the timer counter.
87 * Writes the given value @val to the lower byte of the timer counter.
108 * Writes the given value @val to the lower byte of the control/status
129 * Writes the given value @val to the lower byte of the timer counter.
151 * Writes the given value @val to the lower byte of the control/status
/Linux-v5.15/Documentation/scsi/
Dscsi_eh.rst151 Note that this does not mean lower layers are quiescent. If a LLDD
152 completed a scmd with error status, the LLDD and lower layers are
154 has timed out, unless hostt->eh_timed_out() made lower layers forget
156 active as long as lower layers are concerned and completion could
205 lower layers and lower layers are ready to process or fail the scmd
221 Higher-severity actions are taken only when lower-severity actions
237 lower severity actions are complete.
388 that lower layers have forgotten about the scmd and we can
397 and STU doesn't make lower layers forget about those
399 if STU succeeds leaving lower layers in an inconsistent
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/Linux-v5.15/Documentation/vm/
Dbalance.rst43 zone size (and possibly of the size of lower class zones), we can decide
46 of lower class zones, the bad part is, we might do too frequent balancing
47 due to ignoring possibly lower usage in the lower class zones. Also,
52 of a zone _and_ all its lower class zones falls below 1/64th of the
53 total memory in the zone and its lower class zones. This fixes the 2.2
/Linux-v5.15/include/linux/iio/imu/
Dadis.h176 * @reg: The address of the lower of the two registers
188 * @reg: The address of the lower of the four register
200 * @reg: The address of the lower of the two registers
219 * @reg: The address of the lower of the two registers
238 * @reg: The address of the lower of the two registers
257 * @reg: The address of the lower of the two registers
288 * @reg: The address of the lower of the two registers
300 * @reg: The address of the lower of the four register
312 * @reg: The address of the lower of the two registers
331 * @reg: The address of the lower of the two registers
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