From: Oren Laadan <orenl@xxxxxxxxxxxxxxx>
* /dev/null
* /dev/zero
* /dev/random
* /dev/urandom
Signed-off-by: Oren Laadan <orenl@xxxxxxxxxxxxxxx>
Signed-off-by: Nathan Lynch <ntl@xxxxxxxxx>
---
drivers/char/mem.c | 6 ++++++
drivers/char/random.c | 6 ++++++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 1256454..3452d1f 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -767,6 +767,9 @@ static const struct file_operations null_fops = {
.read = read_null,
.write = write_null,
.splice_write = splice_write_null,
+#ifdef CONFIG_CHECKPOINT
+ .checkpoint = generic_file_checkpoint,
+#endif
};
#ifdef CONFIG_DEVPORT
@@ -783,6 +786,9 @@ static const struct file_operations zero_fops = {
.read = read_zero,
.write = write_zero,
.mmap = mmap_zero,
+#ifdef CONFIG_CHECKPOINT
+ .checkpoint = generic_file_checkpoint,
+#endif
};
/*
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 5a1aa64..67d00b8 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1166,6 +1166,9 @@ const struct file_operations random_fops = {
.unlocked_ioctl = random_ioctl,
.fasync = random_fasync,
.llseek = noop_llseek,
+#ifdef CONFIG_CHECKPOINT
+ .checkpoint = generic_file_checkpoint,
+#endif
};
const struct file_operations urandom_fops = {
@@ -1174,6 +1177,9 @@ const struct file_operations urandom_fops = {
.unlocked_ioctl = random_ioctl,
.fasync = random_fasync,
.llseek = noop_llseek,
+#ifdef CONFIG_CHECKPOINT
+ .checkpoint = generic_file_checkpoint,
+#endif
};
/***************************************************************
--
1.7.4
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