Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/namei.c | 2 ++
include/linux/fs.h | 4 +++-
kernel/sysctl.c | 7 +++++++
3 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/fs/namei.c b/fs/namei.c
index 6886630..1ae2c06 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -110,6 +110,8 @@
* any extra contention...
*/
+unsigned int estale_retries __read_mostly = 1;
+
/* In order to reduce some races, while at the same time doing additional
* checking and hopefully speeding things up, we copy filenames to the
* kernel data space before using them..
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 01ff902..119a0f0 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2023,6 +2023,8 @@ extern int finish_open(struct file *file, struct dentry *dentry,
int *opened);
extern int finish_no_open(struct file *file, struct dentry *dentry);
+extern unsigned int estale_retries;
+
/**
* retry_estale - determine whether the caller should retry an operation
*
@@ -2041,7 +2043,7 @@ retry_estale(const long error, const unsigned int try)
if (likely(error != -ESTALE))
return false;
- return !try;
+ return (try <= estale_retries);
}
/* fs/ioctl.c */
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 26f65ea..24735db 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1545,6 +1545,13 @@ static struct ctl_table fs_table[] = {
.proc_handler = &pipe_proc_fn,
.extra1 = &pipe_min_size,
},
+ {
+ .procname = "estale_retries",
+ .data = &estale_retries,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
{ }
};
--
1.7.11.7
--
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