NFSv4: Ensure that we track the NFSv4 lock state in read/write requests.
This patch fixes bugzilla entry 14501:
https://bugzilla.kernel.org/show_bug.cgi?id=14501
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 77c2ae5..a9d8026 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -72,13 +72,20 @@
int mask;
};
+struct nfs_lock_context {
+ atomic_t count;
+ struct list_head list;
+ struct nfs_open_context *open_context;
+ fl_owner_t lockowner;
+ pid_t pid;
+};
+
struct nfs4_state;
struct nfs_open_context {
- atomic_t count;
+ struct nfs_lock_context lock_context;
struct path path;
struct rpc_cred *cred;
struct nfs4_state *state;
- fl_owner_t lockowner;
fmode_t mode;
unsigned long flags;
@@ -353,6 +360,8 @@
extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);
extern void put_nfs_open_context(struct nfs_open_context *ctx);
extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode);
+extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx);
+extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx);
extern u64 nfs_compat_user_ino64(u64 fileid);
extern void nfs_fattr_init(struct nfs_fattr *fattr);
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index 3c60685..f8b60e7 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -39,6 +39,7 @@
struct list_head wb_list; /* Defines state of page: */
struct page *wb_page; /* page to read in/write out */
struct nfs_open_context *wb_context; /* File state context info */
+ struct nfs_lock_context *wb_lock_context; /* lock context info */
atomic_t wb_complete; /* i/os we're waiting for */
pgoff_t wb_index; /* Offset >> PAGE_CACHE_SHIFT */
unsigned int wb_offset, /* Offset & ~PAGE_CACHE_MASK */
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index a319cb9..87202c7 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -334,6 +334,7 @@
struct nfs_readargs {
struct nfs_fh * fh;
struct nfs_open_context *context;
+ struct nfs_lock_context *lock_context;
__u64 offset;
__u32 count;
unsigned int pgbase;
@@ -354,6 +355,7 @@
struct nfs_writeargs {
struct nfs_fh * fh;
struct nfs_open_context *context;
+ struct nfs_lock_context *lock_context;
__u64 offset;
__u32 count;
enum nfs3_stable_how stable;