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Commit 9e1681c2 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4: Truncating file opens should also sync O_DIRECT writes 



We don't just want to sync out buffered writes, but also O_DIRECT ones.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
parent d9dabc1a

fs/nfs/inode.c

+2 −1
Original line number Diff line number Diff line
@@ -133,11 +133,12 @@ void nfs_evict_inode(struct inode *inode) 
	nfs_clear_inode(inode);

}



static int nfs_sync_inode(struct inode *inode)

int nfs_sync_inode(struct inode *inode)

{

	nfs_inode_dio_wait(inode);

	return nfs_wb_all(inode);

}

EXPORT_SYMBOL_GPL(nfs_sync_inode);



/**

 * nfs_sync_mapping - helper to flush all mmapped dirty data to disk

fs/nfs/nfs4file.c

+1 −1
Original line number Diff line number Diff line
@@ -59,7 +59,7 @@ nfs4_file_open(struct inode *inode, struct file *filp) 
	if (openflags & O_TRUNC) {

		attr.ia_valid |= ATTR_SIZE;

		attr.ia_size = 0;

		nfs_wb_all(inode);

		nfs_sync_inode(inode);

	}



	inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr, &opened);

include/linux/nfs_fs.h

+1 −0
Original line number Diff line number Diff line
@@ -512,6 +512,7 @@ extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned 
 * Try to write back everything synchronously (but check the

 * return value!)

 */

extern int nfs_sync_inode(struct inode *inode);

extern int nfs_wb_all(struct inode *inode);

extern int nfs_wb_page(struct inode *inode, struct page* page);

extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);