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authorBen Myers <bpm@sgi.com>2010-02-17 14:05:11 -0600
committerJ. Bruce Fields <bfields@citi.umich.edu>2010-02-20 13:13:44 -0800
commitf501912a35c02eadc55ca9396ece55fe36f785d0 (patch)
treef5d6f66d2ad14910e3c2c3d6725cac9402f37c1a /include/linux
parent7e469af97eed947ba9204712601281a69ae8eb6c (diff)
downloadop-kernel-dev-f501912a35c02eadc55ca9396ece55fe36f785d0.zip
op-kernel-dev-f501912a35c02eadc55ca9396ece55fe36f785d0.tar.gz
commit_metadata export operation replacing nfsd_sync_dir
- Add commit_metadata export_operation to allow the underlying filesystem to decide how to commit an inode most efficiently. - Usage of nfsd_sync_dir and write_inode_now has been replaced with the commit_metadata function that takes a svc_fh. - The commit_metadata function calls the commit_metadata export_op if it's there, or else falls back to sync_inode instead of fsync and write_inode_now because only metadata need be synced here. - nfsd4_sync_rec_dir now uses vfs_fsync so that commit_metadata can be static Signed-off-by: Ben Myers <bpm@sgi.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/exportfs.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h
index dc12f41..a9cd507 100644
--- a/include/linux/exportfs.h
+++ b/include/linux/exportfs.h
@@ -96,6 +96,7 @@ struct fid {
* @fh_to_parent: find the implied object's parent and get a dentry for it
* @get_name: find the name for a given inode in a given directory
* @get_parent: find the parent of a given directory
+ * @commit_metadata: commit metadata changes to stable storage
*
* See Documentation/filesystems/nfs/Exporting for details on how to use
* this interface correctly.
@@ -137,6 +138,9 @@ struct fid {
* is also a directory. In the event that it cannot be found, or storage
* space cannot be allocated, a %ERR_PTR should be returned.
*
+ * commit_metadata:
+ * @commit_metadata should commit metadata changes to stable storage.
+ *
* Locking rules:
* get_parent is called with child->d_inode->i_mutex down
* get_name is not (which is possibly inconsistent)
@@ -152,6 +156,7 @@ struct export_operations {
int (*get_name)(struct dentry *parent, char *name,
struct dentry *child);
struct dentry * (*get_parent)(struct dentry *child);
+ int (*commit_metadata)(struct inode *inode);
};
extern int exportfs_encode_fh(struct dentry *dentry, struct fid *fid,
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