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 --- fs/netfs/internal.h | 7 +++++-- fs/netfs/objects.c | 13 ++++++++++--- fs/netfs/read_helper.c | 23 +++++++++++------------ 3 files changed, 26 insertions(+), 17 deletions(-) (limited to 'fs/netfs') diff --git a/fs/netfs/internal.h b/fs/netfs/internal.h index a0b7d1bf9f3d..89837e904fa7 100644 --- a/fs/netfs/internal.h +++ b/fs/netfs/internal.h @@ -17,9 +17,12 @@ /* * objects.c */ -struct netfs_io_request *netfs_alloc_request(const struct netfs_request_ops *ops, +struct netfs_io_request *netfs_alloc_request(struct address_space *mapping, + struct file *file, + const struct netfs_request_ops *ops, void *netfs_priv, - struct file *file); + loff_t start, size_t len, + enum netfs_io_origin origin); void netfs_get_request(struct netfs_io_request *rreq, enum netfs_rreq_ref_trace what); void netfs_clear_subrequests(struct netfs_io_request *rreq, bool was_async); void netfs_put_request(struct netfs_io_request *rreq, bool was_async, diff --git a/fs/netfs/objects.c b/fs/netfs/objects.c index 39097893e847..986d7a9d25dd 100644 --- a/fs/netfs/objects.c +++ b/fs/netfs/objects.c @@ -11,17 +11,24 @@ /* * Allocate an I/O request and initialise it. */ -struct netfs_io_request *netfs_alloc_request( - const struct netfs_request_ops *ops, void *netfs_priv, - struct file *file) +struct netfs_io_request *netfs_alloc_request(struct address_space *mapping, + struct file *file, + const struct netfs_request_ops *ops, + void *netfs_priv, + loff_t start, size_t len, + enum netfs_io_origin origin) { static atomic_t debug_ids; struct netfs_io_request *rreq; rreq = kzalloc(sizeof(struct netfs_io_request), GFP_KERNEL); if (rreq) { + rreq->start = start; + rreq->len = len; + rreq->origin = origin; rreq->netfs_ops = ops; rreq->netfs_priv = netfs_priv; + rreq->mapping = mapping; rreq->inode = file_inode(file); rreq->i_size = i_size_read(rreq->inode); rreq->debug_id = atomic_inc_return(&debug_ids); diff --git a/fs/netfs/read_helper.c b/fs/netfs/read_helper.c index 8f277da487b6..dea085715286 100644 --- a/fs/netfs/read_helper.c +++ b/fs/netfs/read_helper.c @@ -763,12 +763,13 @@ void netfs_readahead(struct readahead_control *ractl, if (readahead_count(ractl) == 0) goto cleanup; - rreq = netfs_alloc_request(ops, netfs_priv, ractl->file); + rreq = netfs_alloc_request(ractl->mapping, ractl->file, + ops, netfs_priv, + readahead_pos(ractl), + readahead_length(ractl), + NETFS_READAHEAD); if (!rreq) goto cleanup; - rreq->mapping = ractl->mapping; - rreq->start = readahead_pos(ractl); - rreq->len = readahead_length(ractl); if (ops->begin_cache_operation) { ret = ops->begin_cache_operation(rreq); @@ -838,16 +839,15 @@ int netfs_readpage(struct file *file, _enter("%lx", folio_index(folio)); - rreq = netfs_alloc_request(ops, netfs_priv, file); + rreq = netfs_alloc_request(folio->mapping, file, ops, netfs_priv, + folio_file_pos(folio), folio_size(folio), + NETFS_READPAGE); if (!rreq) { if (netfs_priv) ops->cleanup(folio_file_mapping(folio), netfs_priv); folio_unlock(folio); return -ENOMEM; } - rreq->mapping = folio_file_mapping(folio); - rreq->start = folio_file_pos(folio); - rreq->len = folio_size(folio); if (ops->begin_cache_operation) { ret = ops->begin_cache_operation(rreq); @@ -1008,12 +1008,11 @@ retry: } ret = -ENOMEM; - rreq = netfs_alloc_request(ops, netfs_priv, file); + rreq = netfs_alloc_request(mapping, file, ops, netfs_priv, + folio_file_pos(folio), folio_size(folio), + NETFS_READ_FOR_WRITE); if (!rreq) goto error; - rreq->mapping = folio_file_mapping(folio); - rreq->start = folio_file_pos(folio); - rreq->len = folio_size(folio); rreq->no_unlock_folio = folio_index(folio); __set_bit(NETFS_RREQ_NO_UNLOCK_FOLIO, &rreq->flags); netfs_priv = NULL; -- cgit v1.2.3