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authorBenny Halevy <bhalevy@panasas.com>2010-10-20 08:18:01 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-10-25 02:07:10 +0400
commite5e940170b2136ad4d5483ef293ae284b9cc8d53 (patch)
tree1568bf55addee6a6fdc091026083426b087e68df /include
parent7ab672ce312133ee4a5d85b71447b2b334403681 (diff)
downloadlinux-e5e940170b2136ad4d5483ef293ae284b9cc8d53.tar.xz
NFS: create and destroy inode's layout cache
At the start of the io paths, try to grab the relevant layout information. This will initiate the inode's layout cache, but stubs ensure the cache stays empty. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Dean Hildebrand <dhildebz@umich.edu> Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/nfs_fs.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 499872fa895c..0833bb67c831 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -188,6 +188,9 @@ struct nfs_inode {
struct nfs_delegation *delegation;
fmode_t delegation_state;
struct rw_semaphore rwsem;
+
+ /* pNFS layout information */
+ struct pnfs_layout_hdr *layout;
#endif /* CONFIG_NFS_V4*/
#ifdef CONFIG_NFS_FSCACHE
struct fscache_cookie *fscache;