On Thursday 05 May 2011 16:27:57 Josef Bacik wrote:Looking at this llseek stuff I noticed that default_llseek is the exact same as
generic_file_llseek, so kill default_llseek. I patched this using spatch with
just a simple
@@
@@
- default_llseek
+ generic_file_llseek
...
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index d245cb2..6f37c39 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -558,7 +558,7 @@ static int open_kcore(struct inode *inode, struct file *filp)
static const struct file_operations proc_kcore_operations = {
.read = read_kcore,
.open = open_kcore,
- .llseek = default_llseek,
+ .llseek = generic_file_llseek,
};
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 74802bc5..0cafd9e 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -163,7 +163,7 @@ static ssize_t read_vmcore(struct file *file, char __user *buffer,
static const struct file_operations proc_vmcore_operations = {
.read = read_vmcore,
- .llseek = default_llseek,
+ .llseek = generic_file_llseek,
};
Both /proc/kcore and /proc/vmcore currently require default_llseek().
They were both changed to use generic_file_llseek(), but then subsequently
reverted back to default_llseek():
commit c227e69028473c7c7994a9b0a2cc0034f3f7e0fe
Author: Arnd Bergmann<arnd@xxxxxxxx>
Date: Wed Sep 22 13:04:54 2010 -0700
/proc/vmcore: fix seeking
Commit 73296bc611 ("procfs: Use generic_file_llseek in /proc/vmcore")
broke seeking on /proc/vmcore. This changes it back to use default_llseek
in order to restore the original behaviour.
...
commit ceff1a770933e2ca2bf995b453dade4ec47a9878
Author: Dave Anderson<anderson@xxxxxxxxxx>
Date: Wed Jan 12 17:00:36 2011 -0800
/proc/kcore: fix seeking
Commit 34aacb2920 ("procfs: Use generic_file_llseek in /proc/kcore") broke
seeking on /proc/kcore. This changes it back to use default_llseek in
order to restore the original behavior.
...