lkml.org 
[lkml]   [2020]   [Feb]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.5 165/399] nfsd: Clone should commit src file metadata too
Date
From: Trond Myklebust <trondmy@gmail.com>

[ Upstream commit 57f64034966fb945fc958f95f0c51e47af590344 ]

vfs_clone_file_range() can modify the metadata on the source file too,
so we need to commit that to stable storage as well.

Reported-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Acked-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/nfsd/vfs.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index f0bca0e87d0c4..82cf80dde5c71 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -280,19 +280,25 @@ out:
* Commit metadata changes to stable storage.
*/
static int
-commit_metadata(struct svc_fh *fhp)
+commit_inode_metadata(struct inode *inode)
{
- struct inode *inode = d_inode(fhp->fh_dentry);
const struct export_operations *export_ops = inode->i_sb->s_export_op;

- if (!EX_ISSYNC(fhp->fh_export))
- return 0;
-
if (export_ops->commit_metadata)
return export_ops->commit_metadata(inode);
return sync_inode_metadata(inode, 1);
}

+static int
+commit_metadata(struct svc_fh *fhp)
+{
+ struct inode *inode = d_inode(fhp->fh_dentry);
+
+ if (!EX_ISSYNC(fhp->fh_export))
+ return 0;
+ return commit_inode_metadata(inode);
+}
+
/*
* Go over the attributes and take care of the small differences between
* NFS semantics and what Linux expects.
@@ -537,6 +543,9 @@ __be32 nfsd4_clone_file_range(struct file *src, u64 src_pos, struct file *dst,
if (sync) {
loff_t dst_end = count ? dst_pos + count - 1 : LLONG_MAX;
int status = vfs_fsync_range(dst, dst_pos, dst_end, 0);
+
+ if (!status)
+ status = commit_inode_metadata(file_inode(src));
if (status < 0)
return nfserrno(status);
}
--
2.20.1


\
 
 \ /
  Last update: 2020-02-21 09:46    [W:0.763 / U:1.188 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site