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Subject[PATCH v18 40/80] c/r: add generic '->checkpoint()' f_op to simple devices
Date
* /dev/null
* /dev/zero
* /dev/random
* /dev/urandom

Signed-off-by: Oren Laadan <orenl@cs.columbia.edu>
---
drivers/char/mem.c | 2 ++
drivers/char/random.c | 2 ++
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index afa8813..828ba7f 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -799,6 +799,7 @@ static const struct file_operations null_fops = {
.read = read_null,
.write = write_null,
.splice_write = splice_write_null,
+ .checkpoint = generic_file_checkpoint,
};

#ifdef CONFIG_DEVPORT
@@ -815,6 +816,7 @@ static const struct file_operations zero_fops = {
.read = read_zero,
.write = write_zero,
.mmap = mmap_zero,
+ .checkpoint = generic_file_checkpoint,
};

/*
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 8c74448..211ca70 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1164,6 +1164,7 @@ const struct file_operations random_fops = {
.poll = random_poll,
.unlocked_ioctl = random_ioctl,
.fasync = random_fasync,
+ .checkpoint = generic_file_checkpoint,
};

const struct file_operations urandom_fops = {
@@ -1171,6 +1172,7 @@ const struct file_operations urandom_fops = {
.write = random_write,
.unlocked_ioctl = random_ioctl,
.fasync = random_fasync,
+ .checkpoint = generic_file_checkpoint,
};

/***************************************************************
--
1.6.0.4


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