Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d585158b authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: Fix nfs_set_page_dirty() 



Be more careful about testing page->mapping.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent dc87c398

fs/nfs/write.c

+11 −1
Original line number Diff line number Diff line
@@ -1531,10 +1531,18 @@ int nfs_wb_page(struct inode *inode, struct page* page) 


int nfs_set_page_dirty(struct page *page)

{

	spinlock_t *req_lock = &NFS_I(page->mapping->host)->req_lock;

	struct address_space *mapping = page->mapping;

	struct inode *inode;

	spinlock_t *req_lock;

	struct nfs_page *req;

	int ret;



	if (!mapping)

		goto out_raced;

	inode = mapping->host;

	if (!inode)

		goto out_raced;

	req_lock = &NFS_I(inode)->req_lock;

	spin_lock(req_lock);

	req = nfs_page_find_request_locked(page);

	if (req != NULL) {
@@ -1547,6 +1555,8 @@ int nfs_set_page_dirty(struct page *page) 
	ret = __set_page_dirty_nobuffers(page);

	spin_unlock(req_lock);

	return ret;

out_raced:

	return !TestSetPageDirty(page);

}