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Commit 31a01f09 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: Don't unlock writebacks before declaring PG_WB_END 



We don't want nfs_lock_and_join_requests() to start fiddling with
the request before the call to nfs_page_group_sync_on_bit().

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
parent e14bebf6

fs/nfs/write.c

+4 −4
Original line number Diff line number Diff line
@@ -335,8 +335,11 @@ static void nfs_end_page_writeback(struct nfs_page *req) 
{

	struct inode *inode = page_file_mapping(req->wb_page)->host;

	struct nfs_server *nfss = NFS_SERVER(inode);

	bool is_done;



	if (!nfs_page_group_sync_on_bit(req, PG_WB_END))

	is_done = nfs_page_group_sync_on_bit(req, PG_WB_END);

	nfs_unlock_request(req);

	if (!is_done)

		return;



	end_page_writeback(req->wb_page);
@@ -596,7 +599,6 @@ nfs_lock_and_join_requests(struct page *page) 


static void nfs_write_error_remove_page(struct nfs_page *req)

{

	nfs_unlock_request(req);

	nfs_end_page_writeback(req);

	generic_error_remove_page(page_file_mapping(req->wb_page),

				  req->wb_page);
@@ -1019,7 +1021,6 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr) 
remove_req:

		nfs_inode_remove_request(req);

next:

		nfs_unlock_request(req);

		nfs_end_page_writeback(req);

		nfs_release_request(req);

	}
@@ -1406,7 +1407,6 @@ static void nfs_redirty_request(struct nfs_page *req) 
{

	nfs_mark_request_dirty(req);

	set_bit(NFS_CONTEXT_RESEND_WRITES, &req->wb_context->flags);

	nfs_unlock_request(req);

	nfs_end_page_writeback(req);

	nfs_release_request(req);

}