linux-kernel - linux-next: manual merge of the v9fs-ericvh tree with the vfs-idmapping tree

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Date:   Fri, 27 Jan 2023 11:21:49 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Eric Van Hensbergen <ericvh@...il.com>,
        Christian Brauner <christian@...uner.io>,
        Seth Forshee <sforshee@...nel.org>
Cc:     Christian Brauner <brauner@...nel.org>,
        Eric Van Hensbergen <ericvh@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: manual merge of the v9fs-ericvh tree with the
 vfs-idmapping tree

Hi all,

Today's linux-next merge of the v9fs-ericvh tree got conflicts in:

  fs/9p/vfs_inode.c
  fs/9p/vfs_inode_dotl.c

between commit:

  b74d24f7a74f ("fs: port ->getattr() to pass mnt_idmap")

from the vfs-idmapping tree and commit:

  a905b430e998 ("fs/9p: writeback mode fixes")

from the v9fs-ericvh tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc fs/9p/vfs_inode.c
index 4344e7a7865f,c61709d98934..000000000000
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@@ -1038,8 -1009,11 +1009,11 @@@ v9fs_vfs_getattr(struct mnt_idmap *idma
  	p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry);
  	v9ses = v9fs_dentry2v9ses(dentry);
  	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
- 		generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat);
 -		generic_fillattr(&init_user_ns, inode, stat);
++		generic_fillattr(&nop_mnt_idmap, inode, stat);
  		return 0;
+ 	} else if (v9ses->cache >= CACHE_WRITEBACK) {
+ 		if (S_ISREG(inode->i_mode))
+ 			filemap_write_and_wait(inode->i_mapping);
  	}
  	fid = v9fs_fid_lookup(dentry);
  	if (IS_ERR(fid))
diff --cc fs/9p/vfs_inode_dotl.c
index 3bed3eb3a0e2,3ad48474bf29..000000000000
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@@ -462,8 -452,11 +452,11 @@@ v9fs_vfs_getattr_dotl(struct mnt_idmap 
  	p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry);
  	v9ses = v9fs_dentry2v9ses(dentry);
  	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
- 		generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat);
 -		generic_fillattr(&init_user_ns, inode, stat);
++		generic_fillattr(&nop_mnt_idmap, inode, stat);
  		return 0;
+ 	} else if (v9ses->cache) {
+ 		if (S_ISREG(inode->i_mode))
+ 			filemap_write_and_wait(inode->i_mapping);
  	}
  	fid = v9fs_fid_lookup(dentry);
  	if (IS_ERR(fid))
@@@ -592,12 -589,17 +589,17 @@@ int v9fs_vfs_setattr_dotl(struct mnt_id
  		return retval;
  	}
  
- 	if ((iattr->ia_valid & ATTR_SIZE) &&
- 	    iattr->ia_size != i_size_read(inode))
+ 	if ((iattr->ia_valid & ATTR_SIZE) && iattr->ia_size !=
+ 		 i_size_read(inode)) {
  		truncate_setsize(inode, iattr->ia_size);
+ 		truncate_pagecache(inode, iattr->ia_size);
+ 
+ 		if (v9ses->cache == CACHE_FSCACHE)
+ 			fscache_resize_cookie(v9fs_inode_cookie(v9inode), iattr->ia_size);
+ 	}
  
  	v9fs_invalidate_inode_attr(inode);
 -	setattr_copy(&init_user_ns, inode, iattr);
 +	setattr_copy(&nop_mnt_idmap, inode, iattr);
  	mark_inode_dirty(inode);
  	if (iattr->ia_valid & ATTR_MODE) {
  		/* We also want to update ACL when we update mode bits */

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