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Wed, 14 Aug 2024 20:39:58 +0000 (UTC) From: David Howells To: Christian Brauner , Steve French , Matthew Wilcox Cc: David Howells , Jeff Layton , Gao Xiang , Dominique Martinet , Marc Dionne , Paulo Alcantara , Shyam Prasad N , Tom Talpey , Eric Van Hensbergen , Ilya Dryomov , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs@lists.linux.dev, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 08/25] netfs: Reserve netfs_sreq_source 0 as unset/unknown Date: Wed, 14 Aug 2024 21:38:28 +0100 Message-ID: <20240814203850.2240469-9-dhowells@redhat.com> In-Reply-To: <20240814203850.2240469-1-dhowells@redhat.com> References: <20240814203850.2240469-1-dhowells@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 X-Rspamd-Queue-Id: 46DB7A0009 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 3jgue8mauyhf5km5hx6q7gsqr4xsrzcm X-HE-Tag: 1723668013-248541 X-HE-Meta: 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 nUODOTl+ OkGXqRc14XfUnyyz32n8dHmiaJ8GacbFTWV+qdI/rCgZPd1huBxVqyLg7PeV7fMzx4zSjDm1ZaW/On4oIxk9Zq2VOHp5nlOYGln0Gr/Vy52ZivJiBSpRl+P0AQTO2RHiXJa8/xHatKHycHswX2acUtv3JNS/G2QvJVtR2HeqxUh4akzKRWeRD9LEqsHwJsbA+yeuOnnpU2f61+nS0Os+yfBVosyMseMxq2KtUOH4XQq8xfmPNY6lbj0hNnst2n+orXDn2b474b556hD6rPPkvTLJY7kttIaNU8Bdcrk/NsDhm6dMwFM7wr3gHZR8vWRX1jPuz7e65I/OpG8rppqXlRr/YS5GPMBZCGmEb9Pc1LxZM3XzUmutnlxyaao0k6mo7wMz5m4LuuMMlP9ReriVCKKzpag== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Reserve the 0-valued netfs_sreq_source to mean unset or unknown so that it can be seen in the trace as such rather than appearing as download-from-server when it's going to get switched to something else. Signed-off-by: David Howells cc: Jeff Layton cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org --- include/linux/netfs.h | 1 + include/trace/events/netfs.h | 1 + 2 files changed, 2 insertions(+) diff --git a/include/linux/netfs.h b/include/linux/netfs.h index 11fa86640d91..16834751e646 100644 --- a/include/linux/netfs.h +++ b/include/linux/netfs.h @@ -43,6 +43,7 @@ static inline void folio_start_private_2(struct folio *folio) #define NETFS_BUF_PAGECACHE_MARK XA_MARK_1 /* - Page needs wb/dirty flag wrangling */ enum netfs_io_source { + NETFS_SOURCE_UNKNOWN, NETFS_FILL_WITH_ZEROES, NETFS_DOWNLOAD_FROM_SERVER, NETFS_READ_FROM_CACHE, diff --git a/include/trace/events/netfs.h b/include/trace/events/netfs.h index a4fd5dea52f4..f4105b8e5894 100644 --- a/include/trace/events/netfs.h +++ b/include/trace/events/netfs.h @@ -60,6 +60,7 @@ E_(netfs_rreq_trace_write_done, "WR-DONE") #define netfs_sreq_sources \ + EM(NETFS_SOURCE_UNKNOWN, "----") \ EM(NETFS_FILL_WITH_ZEROES, "ZERO") \ EM(NETFS_DOWNLOAD_FROM_SERVER, "DOWN") \ EM(NETFS_READ_FROM_CACHE, "READ") \