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From: Jeff Layton <jlayton@kernel.org>
To: Andreas Gruenbacher <agruenba@redhat.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	David Sterba <dsterba@suse.com>, Theodore Ts'o <tytso@mit.edu>,
	Chao Yu <chao@kernel.org>, Richard Weinberger <richard@nod.at>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 6/7] ceph: Switch to page_mkwrite_check_truncate in ceph_page_mkwrite
Date: Thu, 13 Feb 2020 19:00:00 -0500
Message-ID: <9988adaa3849d526bfefdebccccef20dc3e7d696.camel@kernel.org> (raw)
In-Reply-To: <20200213202423.23455-7-agruenba@redhat.com>

On Thu, 2020-02-13 at 21:24 +0100, Andreas Gruenbacher wrote:
> Use the "page has been truncated" logic in page_mkwrite_check_truncate
> instead of reimplementing it here.  Other than with the existing code,
> fail with -EFAULT / VM_FAULT_NOPAGE when page_offset(page) == size here
> as well, as should be expected.
> 
> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
> Acked-by: Jeff Layton <jlayton@kernel.org>
> ---
>  fs/ceph/addr.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
> index 7ab616601141..ef958aa4adb4 100644
> --- a/fs/ceph/addr.c
> +++ b/fs/ceph/addr.c
> @@ -1575,7 +1575,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf)
>  	do {
>  		lock_page(page);
>  
> -		if ((off > size) || (page->mapping != inode->i_mapping)) {
> +		if (page_mkwrite_check_truncate(page, inode) < 0) {
>  			unlock_page(page);
>  			ret = VM_FAULT_NOPAGE;
>  			break;

Thanks Andreas. Merged into the ceph-client/testing branch and should
make v5.7.

Thanks,
-- 
Jeff Layton <jlayton@kernel.org>


  reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-13 20:24 [PATCH 0/7] Switch to page_mkwrite_check_truncate Andreas Gruenbacher
2020-02-13 20:24 ` [PATCH 1/7] fs: Un-inline page_mkwrite_check_truncate Andreas Gruenbacher
2020-02-14 15:11   ` Jan Kara
2020-02-14 20:10   ` [PATCH v2] " Andreas Gruenbacher
2020-02-17 10:33     ` Jan Kara
2020-02-13 20:24 ` [PATCH 2/7] fs: Switch to page_mkwrite_check_truncate in block_page_mkwrite Andreas Gruenbacher
2020-02-13 20:24 ` [PATCH 3/7] ubifs: Switch to page_mkwrite_check_truncate in ubifs_vm_page_mkwrite Andreas Gruenbacher
2020-02-13 20:24 ` [PATCH 4/7] ext4: Switch to page_mkwrite_check_truncate in ext4_page_mkwrite Andreas Gruenbacher
2020-02-13 20:24 ` [PATCH 5/7] f2fs: Switch to page_mkwrite_check_truncate in f2fs_vm_page_mkwrite Andreas Gruenbacher
2020-02-13 20:24 ` [PATCH 6/7] ceph: Switch to page_mkwrite_check_truncate in ceph_page_mkwrite Andreas Gruenbacher
2020-02-14  0:00   ` Jeff Layton [this message]
2020-02-13 20:24 ` [PATCH 7/7] btrfs: Switch to page_mkwrite_check_truncate in btrfs_page_mkwrite Andreas Gruenbacher

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