--- /dev/null
+From 0d685f4ec8b54860a031fe3e04a2fff535288f80 Mon Sep 17 00:00:00 2001
+From: Ankur Tyagi <ankur.tyagi85@gmail.com>
+Date: Mon, 26 Jan 2026 22:46:51 +1300
+Subject: [PATCH] raid6check.c, restripe.c: Use 64-bit off_t across both musl
+ and glibc
+
+This commit is adaptation of original patch[1] after commit[2] addressed
+lseek issues.
+
+[1] https://lore.kernel.org/linux-raid/20221110225546.337164-1-raj.khem@gmail.com/
+[2] https://github.com/md-raid-utilities/mdadm/commit/787cc1b60130b8031be59e49d54463c58cd8cf74
+
+Upstream-Status: Submitted [https://github.com/md-raid-utilities/mdadm/pull/235]
+Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
+---
+ raid6check.c | 4 ++--
+ restripe.c | 2 +-
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/raid6check.c b/raid6check.c
+index 4469dc8f..fa50d44e 100644
+--- a/raid6check.c
++++ b/raid6check.c
+@@ -288,7 +288,7 @@ int manual_repair(int chunk_size, int syndrome_disks,
+ }
+
+ int write_res1, write_res2;
+- off64_t seek_res;
++ off_t seek_res;
+
+ seek_res = lseek(source[fd1], offsets[fd1] + start * chunk_size, SEEK_SET);
+ if (seek_res < 0) {
+@@ -381,7 +381,7 @@ int check_stripes(struct mdinfo *info, int *source, unsigned long long *offsets,
+ goto exitCheck;
+ }
+ for (i = 0 ; i < raid_disks ; i++) {
+- off64_t seek_res = lseek(source[i], offsets[i] + start * chunk_size,
++ off_t seek_res = lseek(source[i], offsets[i] + start * chunk_size,
+ SEEK_SET);
+ if (seek_res < 0) {
+ fprintf(stderr, "lseek to source %d failed\n", i);
+diff --git a/restripe.c b/restripe.c
+index ec8d6275..58c0f5f5 100644
+--- a/restripe.c
++++ b/restripe.c
+@@ -756,7 +756,7 @@ int restore_stripes(int *dest, unsigned long long *offsets,
+ if (src_buf == NULL) {
+ /* read from file */
+ if (lseek(source, read_offset, 0) !=
+- (off64_t)read_offset) {
++ (off_t)read_offset) {
+ rv = -1;
+ goto abort;
+ }
+++ /dev/null
-From 9e3b15adf86147fe581cd2159cb99708abe26158 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Thu, 10 Nov 2022 12:31:22 -0800
-Subject: [PATCH] restripe.c: Use _FILE_OFFSET_BITS to enable largefile support
-
-Instead of using the lseek64 and friends, its better to enable it via
-the feature macro _FILE_OFFSET_BITS = 64 and let the C library deal with
-the width of types
-
-Upstream-Status: Submitted [https://lore.kernel.org/linux-raid/20221110225546.337164-1-raj.khem@gmail.com/]
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- raid6check.c | 11 +++++++----
- restripe.c | 13 ++++++++-----
- swap_super.c | 13 +++++++------
- 3 files changed, 22 insertions(+), 15 deletions(-)
-
-diff --git a/raid6check.c b/raid6check.c
-index 99477761..8e7f1421 100644
---- a/raid6check.c
-+++ b/raid6check.c
-@@ -22,6 +22,9 @@
- * Based on "restripe.c" from "mdadm" codebase
- */
-
-+/* Enable largefile support */
-+#define _FILE_OFFSET_BITS 64
-+
- #include "mdadm.h"
- #include <stdint.h>
- #include <sys/mman.h>
-@@ -284,9 +287,9 @@ int manual_repair(int chunk_size, int syndrome_disks,
- }
-
- int write_res1, write_res2;
-- off64_t seek_res;
-+ off_t seek_res;
-
-- seek_res = lseek64(source[fd1],
-+ seek_res = lseek(source[fd1],
- offsets[fd1] + start * chunk_size, SEEK_SET);
- if (seek_res < 0) {
- fprintf(stderr, "lseek failed for failed_disk1\n");
-@@ -294,7 +297,7 @@ int manual_repair(int chunk_size, int syndrome_disks,
- }
- write_res1 = write(source[fd1], blocks[failed_slot1], chunk_size);
-
-- seek_res = lseek64(source[fd2],
-+ seek_res = lseek(source[fd2],
- offsets[fd2] + start * chunk_size, SEEK_SET);
- if (seek_res < 0) {
- fprintf(stderr, "lseek failed for failed_disk2\n");
-@@ -379,7 +382,7 @@ int check_stripes(struct mdinfo *info, int *source, unsigned long long *offsets,
- goto exitCheck;
- }
- for (i = 0 ; i < raid_disks ; i++) {
-- off64_t seek_res = lseek64(source[i], offsets[i] + start * chunk_size,
-+ off_t seek_res = lseek(source[i], offsets[i] + start * chunk_size,
- SEEK_SET);
- if (seek_res < 0) {
- fprintf(stderr, "lseek to source %d failed\n", i);
-diff --git a/restripe.c b/restripe.c
-index 5e126eb7..af76c634 100644
---- a/restripe.c
-+++ b/restripe.c
-@@ -22,6 +22,9 @@
- * Email: <neilb@suse.de>
- */
-
-+/* Enable largefile support */
-+#define _FILE_OFFSET_BITS 64
-+
- #include "mdadm.h"
- #include "xmalloc.h"
-
-@@ -583,7 +586,7 @@ int save_stripes(int *source, unsigned long long *offsets,
- raid_disks, level, layout);
- if (dnum < 0) abort();
- if (source[dnum] < 0 ||
-- lseek64(source[dnum],
-+ lseek(source[dnum],
- offsets[dnum] + offset, 0) < 0 ||
- read(source[dnum], buf+disk * chunk_size,
- chunk_size) != chunk_size) {
-@@ -756,8 +759,8 @@ int restore_stripes(int *dest, unsigned long long *offsets,
- raid_disks, level, layout);
- if (src_buf == NULL) {
- /* read from file */
-- if (lseek64(source, read_offset, 0) !=
-- (off64_t)read_offset) {
-+ if (lseek(source, read_offset, 0) !=
-+ (off_t)read_offset) {
- rv = -1;
- goto abort;
- }
-@@ -818,7 +821,7 @@ int restore_stripes(int *dest, unsigned long long *offsets,
- }
- for (i=0; i < raid_disks ; i++)
- if (dest[i] >= 0) {
-- if (lseek64(dest[i],
-+ if (lseek(dest[i],
- offsets[i]+offset, 0) < 0) {
- rv = -1;
- goto abort;
-@@ -868,7 +871,7 @@ int test_stripes(int *source, unsigned long long *offsets,
- int disk;
-
- for (i = 0 ; i < raid_disks ; i++) {
-- if ((lseek64(source[i], offsets[i]+start, 0) < 0) ||
-+ if ((lseek(source[i], offsets[i]+start, 0) < 0) ||
- (read(source[i], stripes[i], chunk_size) !=
- chunk_size)) {
- free(q);
-diff --git a/swap_super.c b/swap_super.c
-index b6db5743..18c89e2b 100644
---- a/swap_super.c
-+++ b/swap_super.c
-@@ -1,3 +1,6 @@
-+/* Enable largefile support */
-+#define _FILE_OFFSET_BITS 64
-+
- #include <unistd.h>
- #include <stdlib.h>
- #include <fcntl.h>
-@@ -16,8 +19,6 @@
-
- #define MD_NEW_SIZE_SECTORS(x) ((x & ~(MD_RESERVED_SECTORS - 1)) - MD_RESERVED_SECTORS)
-
--extern long long lseek64(int, long long, int);
--
- int main(int argc, char *argv[])
- {
- int fd, i;
-@@ -38,8 +39,8 @@ int main(int argc, char *argv[])
- exit(1);
- }
- offset = MD_NEW_SIZE_SECTORS(size) * 512LL;
-- if (lseek64(fd, offset, 0) < 0LL) {
-- perror("lseek64");
-+ if (lseek(fd, offset, 0) < 0LL) {
-+ perror("lseek");
- exit(1);
- }
- if (read(fd, super, 4096) != 4096) {
-@@ -68,8 +69,8 @@ int main(int argc, char *argv[])
- super[32*4+10*4 +i] = t;
- }
-
-- if (lseek64(fd, offset, 0) < 0LL) {
-- perror("lseek64");
-+ if (lseek(fd, offset, 0) < 0LL) {
-+ perror("lseek");
- exit(1);
- }
- if (write(fd, super, 4096) != 4096) {