From 663dfb65c3b3ea4b8e1944680352992d58f3aa22 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 26 Aug 2021 09:24:42 -0400 Subject: netfs: Refactor arguments for netfs_alloc_read_request Pass start and len to the rreq allocator. This should ensure that the fields are set so that ->init_request() can use them. Also add a parameter to indicates the origin of the request. Ceph can use this to tell whether to get caps. Changes ======= ver #3) - Change the author to me as Jeff feels that most of the patch is my changes now. ver #2) - Show the request origin in the netfs_rreq tracepoint. Signed-off-by: Jeff Layton Co-developed-by: David Howells Signed-off-by: David Howells cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622989020.3564931.17517006047854958747.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678208569.1200972.12153682697842916557.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692904155.2099075.14717645623034355995.stgit@warthog.procyon.org.uk/ # v3 --- include/linux/netfs.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfs.h b/include/linux/netfs.h index c702bd8ea8da..7dc741d9b21b 100644 --- a/include/linux/netfs.h +++ b/include/linux/netfs.h @@ -150,6 +150,12 @@ struct netfs_io_subrequest { #define NETFS_SREQ_NO_PROGRESS 4 /* Set if we didn't manage to read any data */ }; +enum netfs_io_origin { + NETFS_READAHEAD, /* This read was triggered by readahead */ + NETFS_READPAGE, /* This read is a synchronous read */ + NETFS_READ_FOR_WRITE, /* This read is to prepare a write */ +} __mode(byte); + /* * Descriptor for an I/O helper request. This is used to make multiple I/O * operations to a variety of data stores and then stitch the result together. @@ -167,6 +173,7 @@ struct netfs_io_request { size_t submitted; /* Amount submitted for I/O so far */ size_t len; /* Length of the request */ short error; /* 0 or error that occurred */ + enum netfs_io_origin origin; /* Origin of the request */ loff_t i_size; /* Size of the file */ loff_t start; /* Start position */ pgoff_t no_unlock_folio; /* Don't unlock this folio after read */ -- cgit v1.3-14-g43fede