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authorTrond Myklebust <trond.myklebust@primarydata.com>2015-03-25 14:14:42 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-03-27 12:39:38 -0400
commit5bb89b4702e22981445ae01af733a57d1cae2018 (patch)
tree4c00a7c47fa2dab958f43a395e71067fe6ee6538 /fs/nfs/pnfs.h
parent7140171ea9be4143736c35acf6f31b6feb195ca0 (diff)
NFSv4.1/pnfs: Separate out metadata and data consistency for pNFS
The LAYOUTCOMMIT operation means different things to different layout types. For blocks and objects, it is both a data and metadata consistency operation. For files and flexfiles, it is only a metadata consistency operation. This patch separates out the 2 cases, allowing the files/flexfiles layout drivers to optimise away the data consistency calls to layoutcommit. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r--fs/nfs/pnfs.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 66bf5e1cf93d..231eb23c22da 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -155,6 +155,8 @@ struct pnfs_layoutdriver_type {
int how,
struct nfs_commit_info *cinfo);
+ int (*sync)(struct inode *inode, bool datasync);
+
/*
* Return PNFS_ATTEMPTED to indicate the layout code has attempted
* I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS
@@ -267,6 +269,8 @@ bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task);
void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t);
void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
+int pnfs_generic_sync(struct inode *inode, bool datasync);
+int pnfs_nfs_generic_sync(struct inode *inode, bool datasync);
int _pnfs_return_layout(struct inode *);
int pnfs_commit_and_return_layout(struct inode *);
void pnfs_ld_write_done(struct nfs_pgio_header *);
@@ -488,6 +492,14 @@ pnfs_ld_read_whole_page(struct inode *inode)
return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE;
}
+static inline int
+pnfs_sync_inode(struct inode *inode, bool datasync)
+{
+ if (!pnfs_enabled_sb(NFS_SERVER(inode)))
+ return 0;
+ return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync);
+}
+
static inline bool
pnfs_layoutcommit_outstanding(struct inode *inode)
{
@@ -570,6 +582,12 @@ pnfs_ld_read_whole_page(struct inode *inode)
return false;
}
+static inline int
+pnfs_sync_inode(struct inode *inode, bool datasync)
+{
+ return 0;
+}
+
static inline bool
pnfs_roc(struct inode *ino)
{