The patch titled
/dev/mem: allow rewinding
has been added to the -mm tree. Its filename is
dev-mem-allow-rewinding.patch
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------------------------------------------------------
Subject: /dev/mem: allow rewinding
From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
commit dcefafb6 ("/dev/mem: dont allow seek to last page") inadvertently
disabled rewinding on /dev/mem.
This broke x86info for example.
Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Acked-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/mem.c | 5 -----
1 file changed, 5 deletions(-)
diff -puN drivers/char/mem.c~dev-mem-allow-rewinding drivers/char/mem.c
--- a/drivers/char/mem.c~dev-mem-allow-rewinding
+++ a/drivers/char/mem.c
@@ -710,11 +710,6 @@ static loff_t memory_lseek(struct file *
switch (orig) {
case SEEK_CUR:
offset += file->f_pos;
- if ((unsigned long long)offset <
- (unsigned long long)file->f_pos) {
- ret = -EOVERFLOW;
- break;
- }
case SEEK_SET:
/* to avoid userland mistaking f_pos=-9 as -EBADF=-9 */
if ((unsigned long long)offset >= ~0xFFFULL) {
_
Patches currently in -mm which might be from eric.dumazet@xxxxxxxxx are
origin.patch
linux-next.patch
dev-mem-allow-rewinding.patch
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