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authorTrond Myklebust <trond.myklebust@primarydata.com>2015-02-26 16:09:04 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-03-01 23:23:05 -0500
commitf044636d972246d451e06226cc1675d5da389762 (patch)
tree7fbfe0ffc4f5a5b3f9ccf56de8fe887c7394027c /include
parent140e049c64ce848392adbf4678983ecc76888dde (diff)
NFS: Add attribute update barriers to nfs_setattr_update_inode()
Ensure that other operations which raced with our setattr RPC call cannot revert the file attribute changes that were made on the server. To do so, we artificially bump the attribute generation counter on the inode so that all calls to nfs_fattr_init() that precede ours will be dropped. The motivation for the patch came from Chuck Lever's reports of readaheads racing with truncate operations and causing the file size to be reverted. Reported-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/nfs_fs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 3a4ffb5856cd..f26e64e0aff8 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -356,7 +356,7 @@ extern int nfs_revalidate_inode_rcu(struct nfs_server *server, struct inode *ino
extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *);
extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping);
extern int nfs_setattr(struct dentry *, struct iattr *);
-extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr);
+extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, struct nfs_fattr *);
extern void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr,
struct nfs4_label *label);
extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);