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SubjectRe: linux-next: build failure after merge of the nfs tree
From
Thanks Stephen!

Anna will be managing pushing the NFS client changes to Linus during
this merge window, so I'm assuming she will include this and your
other fixup in her pull request.

Cheers
Trond

On Wed, May 18, 2016 at 8:58 PM, Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> Hi Trond,
>
> After merging the nfs tree, today's linux-next build (x86_64 allmodconfig)
> failed like this:
>
> In file included from include/linux/fs.h:19:0,
> from fs/nfs/nfs42proc.c:4:
> fs/nfs/nfs42proc.c: In function 'nfs42_proc_copy':
> fs/nfs/nfs42proc.c:212:30: error: 'struct inode' has no member named 'i_mutex'
> mutex_lock(&file_inode(dst)->i_mutex);
> ^
> include/linux/mutex.h:146:44: note: in definition of macro 'mutex_lock'
> #define mutex_lock(lock) mutex_lock_nested(lock, 0)
> ^
> fs/nfs/nfs42proc.c:215:32: error: 'struct inode' has no member named 'i_mutex'
> mutex_unlock(&file_inode(dst)->i_mutex);
> ^
>
> Caused by commit
>
> 2e72448b07dc ("NFS: Add COPY nfs operation")
>
> interacting with commit
>
> 9902af79c01a ("parallel lookups: actual switch to rwsem")
>
> from Linus' tree.
>
> I applied the following merge fix patch - you will need to send this to
> Linus when you ask him to merge your tree.
>
> From: Stephen Rothwell <sfr@canb.auug.org.au>
> Date: Thu, 19 May 2016 10:50:26 +1000
> Subject: [PATCH] nfs: fix for i_mutex to i_rwsem change
>
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
> ---
> fs/nfs/nfs42proc.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
> index 20c44d1209dc..aa03ed09ba06 100644
> --- a/fs/nfs/nfs42proc.c
> +++ b/fs/nfs/nfs42proc.c
> @@ -209,10 +209,10 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
> dst_exception.state = dst_lock->open_context->state;
>
> do {
> - mutex_lock(&file_inode(dst)->i_mutex);
> + inode_lock(file_inode(dst));
> err = _nfs42_proc_copy(src, pos_src, src_lock,
> dst, pos_dst, dst_lock, count);
> - mutex_unlock(&file_inode(dst)->i_mutex);
> + inode_unlock(file_inode(dst));
>
> if (err == -ENOTSUPP) {
> err = -EOPNOTSUPP;
> --
> 2.7.0
>
> --
> Cheers,
> Stephen Rothwell

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