[v2,10/31] netfs: Drop the was_async arg from netfs_read_subreq_terminated()

Message ID	20241025204008.4076565-11-dhowells@redhat.com (mailing list archive)
State	New
Headers	show Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1DD34224D8F for <linux-nfs@vger.kernel.org>; Fri, 25 Oct 2024 20:41:36 +0000 (UTC) From: David Howells <dhowells@redhat.com> To: Christian Brauner <christian@brauner.io>, Steve French <smfrench@gmail.com>, Matthew Wilcox <willy@infradead.org> Cc: David Howells <dhowells@redhat.com>, Jeff Layton <jlayton@kernel.org>, Gao Xiang <hsiangkao@linux.alibaba.com>, Dominique Martinet <asmadeus@codewreck.org>, Marc Dionne <marc.dionne@auristor.com>, Paulo Alcantara <pc@manguebit.com>, Shyam Prasad N <sprasad@microsoft.com>, Tom Talpey <tom@talpey.com>, Eric Van Hensbergen <ericvh@kernel.org>, Ilya Dryomov <idryomov@gmail.com>, 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, Linus Torvalds <torvalds@linux-foundation.org> Subject: [PATCH v2 10/31] netfs: Drop the was_async arg from netfs_read_subreq_terminated() Date: Fri, 25 Oct 2024 21:39:37 +0100 Message-ID: <20241025204008.4076565-11-dhowells@redhat.com> In-Reply-To: <20241025204008.4076565-1-dhowells@redhat.com> References: <20241025204008.4076565-1-dhowells@redhat.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	netfs: Read performance improvements and "single-blob" support \| expand [v2,00/31] netfs: Read performance improvements and "single-blob" support [v2,01/31] netfs: Remove call to folio_index() [v2,02/31] netfs: Fix a few minor bugs in netfs_page_mkwrite() [v2,03/31] netfs: Remove unnecessary references to pages [v2,04/31] netfs: Use a folio_queue allocation and free functions [v2,05/31] netfs: Add a tracepoint to log the lifespan of folio_queue structs [v2,06/31] netfs: Abstract out a rolling folio buffer implementation [v2,07/31] netfs: Make netfs_advance_write() return size_t [v2,08/31] netfs: Split retry code out of fs/netfs/write_collect.c [v2,09/31] netfs: Drop the error arg from netfs_read_subreq_terminated() [v2,10/31] netfs: Drop the was_async arg from netfs_read_subreq_terminated() [v2,11/31] netfs: Don't use bh spinlock [v2,12/31] afs: Don't use mutex for I/O operation lock [v2,13/31] afs: Fix EEXIST error returned from afs_rmdir() to be ENOTEMPTY [v2,14/31] afs: Fix directory format encoding struct [v2,15/31] netfs: Remove some extraneous directory invalidations [v2,16/31] cachefiles: Add some subrequest tracepoints [v2,17/31] cachefiles: Add auxiliary data trace [v2,18/31] afs: Add more tracepoints to do with tracking validity [v2,19/31] netfs: Add functions to build/clean a buffer in a folio_queue [v2,20/31] netfs: Add support for caching single monolithic objects such as AFS dirs [v2,21/31] afs: Make afs_init_request() get a key if not given a file [v2,22/31] afs: Use netfslib for directories [v2,23/31] afs: Use netfslib for symlinks, allowing them to be cached [v2,24/31] afs: Eliminate afs_read [v2,25/31] afs: Make {Y,}FS.FetchData an asynchronous operation [v2,26/31] netfs: Change the read result collector to only use one work item [v2,27/31] afs: Make afs_mkdir() locally initialise a new directory's content [v2,28/31] afs: Use the contained hashtable to search a directory [v2,29/31] afs: Locally initialise the contents of a new symlink on creation [v2,30/31] afs: Add a tracepoint for afs_read_receive() [v2,31/31] netfs: Report on NULL folioq in netfs_writeback_unlock_folios()

diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index 58a6bd284d88..e4144e1a10a9 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -84,7 +84,7 @@ static void v9fs_issue_read(struct netfs_io_subrequest *subreq) subreq->transferred += total; subreq->error = err; - netfs_read_subreq_terminated(subreq, false); + netfs_read_subreq_terminated(subreq); } /** diff --git a/fs/afs/file.c b/fs/afs/file.c index 56248a078bca..f717168da4ab 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -247,7 +247,7 @@ static void afs_fetch_data_notify(struct afs_operation *op) if (req->pos + req->actual_len >= req->file_size) __set_bit(NETFS_SREQ_HIT_EOF, &subreq->flags); subreq->error = error; - netfs_read_subreq_terminated(subreq, false); + netfs_read_subreq_terminated(subreq); req->subreq = NULL; } else if (req->done) { req->done(req); @@ -304,7 +304,7 @@ int afs_fetch_data(struct afs_vnode *vnode, struct afs_read *req) if (IS_ERR(op)) { if (req->subreq) { req->subreq->error = PTR_ERR(op); - netfs_read_subreq_terminated(req->subreq, false); + netfs_read_subreq_terminated(req->subreq); } return PTR_ERR(op); } @@ -325,7 +325,7 @@ static void afs_read_worker(struct work_struct *work) fsreq = afs_alloc_read(GFP_NOFS); if (!fsreq) { subreq->error = -ENOMEM; - return netfs_read_subreq_terminated(subreq, false); + return netfs_read_subreq_terminated(subreq); } fsreq->subreq = subreq; diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index 098fa034a1cc..784f7daab112 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -352,7 +352,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call) ret = afs_extract_data(call, true); if (req->subreq) { req->subreq->transferred += count_before - call->iov_len; - netfs_read_subreq_progress(req->subreq, false); + netfs_read_subreq_progress(req->subreq); } if (ret < 0) return ret; diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c index 024227aba4cd..368cf277d801 100644 --- a/fs/afs/yfsclient.c +++ b/fs/afs/yfsclient.c @@ -398,7 +398,7 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) ret = afs_extract_data(call, true); if (req->subreq) { req->subreq->transferred += count_before - call->iov_len; - netfs_read_subreq_progress(req->subreq, false); + netfs_read_subreq_progress(req->subreq); } if (ret < 0) return ret; diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 459249ba6319..d008e7334db7 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -255,7 +255,7 @@ static void finish_netfs_read(struct ceph_osd_request *req) } subreq->error = err; trace_netfs_sreq(subreq, netfs_sreq_trace_io_progress); - netfs_read_subreq_terminated(subreq, false); + netfs_read_subreq_terminated(subreq); iput(req->r_inode); ceph_dec_osd_stopping_blocker(fsc->mdsc); } @@ -317,7 +317,7 @@ static bool ceph_netfs_issue_op_inline(struct netfs_io_subrequest *subreq) out: subreq->error = err; trace_netfs_sreq(subreq, netfs_sreq_trace_io_progress); - netfs_read_subreq_terminated(subreq, false); + netfs_read_subreq_terminated(subreq); return true; } @@ -431,7 +431,7 @@ static void ceph_netfs_issue_read(struct netfs_io_subrequest *subreq) ceph_osdc_put_request(req); if (err) { subreq->error = err; - netfs_read_subreq_terminated(subreq, false); + netfs_read_subreq_terminated(subreq); } doutc(cl, "%llx.%llx result %d\n", ceph_vinop(inode), err); } diff --git a/fs/netfs/buffered_read.c b/fs/netfs/buffered_read.c index 82c3b9957958..6fd4f3bef3b4 100644 --- a/fs/netfs/buffered_read.c +++ b/fs/netfs/buffered_read.c @@ -154,7 +154,7 @@ static void netfs_cache_read_terminated(void *priv, ssize_t transferred_or_error } else { subreq->error = transferred_or_error; } - netfs_read_subreq_terminated(subreq, was_async); + schedule_work(&subreq->work); } /* @@ -261,7 +261,7 @@ static void netfs_read_to_pagecache(struct netfs_io_request *rreq) slice = netfs_prepare_read_iterator(subreq); __set_bit(NETFS_SREQ_CLEAR_TAIL, &subreq->flags); subreq->error = 0; - netfs_read_subreq_terminated(subreq, false); + netfs_read_subreq_terminated(subreq); goto done; } @@ -283,7 +283,7 @@ static void netfs_read_to_pagecache(struct netfs_io_request *rreq) } while (size > 0); if (atomic_dec_and_test(&rreq->nr_outstanding)) - netfs_rreq_terminated(rreq, false); + netfs_rreq_terminated(rreq); /* Defer error return as we may need to wait for outstanding I/O. */ cmpxchg(&rreq->error, 0, ret); diff --git a/fs/netfs/direct_read.c b/fs/netfs/direct_read.c index a3f23adbae0f..54027fd14904 100644 --- a/fs/netfs/direct_read.c +++ b/fs/netfs/direct_read.c @@ -100,7 +100,7 @@ static int netfs_dispatch_unbuffered_reads(struct netfs_io_request *rreq) } while (size > 0); if (atomic_dec_and_test(&rreq->nr_outstanding)) - netfs_rreq_terminated(rreq, false); + netfs_rreq_terminated(rreq); return ret; } diff --git a/fs/netfs/internal.h b/fs/netfs/internal.h index 73887525e939..ba32ca61063c 100644 --- a/fs/netfs/internal.h +++ b/fs/netfs/internal.h @@ -85,7 +85,7 @@ static inline void netfs_see_request(struct netfs_io_request *rreq, * read_collect.c */ void netfs_read_termination_worker(struct work_struct *work); -void netfs_rreq_terminated(struct netfs_io_request *rreq, bool was_async); +void netfs_rreq_terminated(struct netfs_io_request *rreq); /* * read_pgpriv2.c diff --git a/fs/netfs/objects.c b/fs/netfs/objects.c index f10fd56efa17..8c98b70eb3a4 100644 --- a/fs/netfs/objects.c +++ b/fs/netfs/objects.c @@ -56,7 +56,7 @@ struct netfs_io_request *netfs_alloc_request(struct address_space *mapping, origin == NETFS_READ_GAPS || origin == NETFS_READ_FOR_WRITE || origin == NETFS_DIO_READ) - INIT_WORK(&rreq->work, netfs_read_termination_worker); + INIT_WORK(&rreq->work, NULL); else INIT_WORK(&rreq->work, netfs_write_collection_worker); diff --git a/fs/netfs/read_collect.c b/fs/netfs/read_collect.c index 00358894fac4..146abb2e399a 100644 --- a/fs/netfs/read_collect.c +++ b/fs/netfs/read_collect.c @@ -85,7 +85,7 @@ static void netfs_unlock_read_folio(struct netfs_io_subrequest *subreq, * Unlock any folios that are now completely read. Returns true if the * subrequest is removed from the list. */ -static bool netfs_consume_read_data(struct netfs_io_subrequest *subreq, bool was_async) +static bool netfs_consume_read_data(struct netfs_io_subrequest *subreq) { struct netfs_io_subrequest *prev, *next; struct netfs_io_request *rreq = subreq->rreq; @@ -228,8 +228,7 @@ static bool netfs_consume_read_data(struct netfs_io_subrequest *subreq, bool was subreq->curr_folioq_slot = slot; if (folioq && folioq_folio(folioq, slot)) subreq->curr_folio_order = folioq->orders[slot]; - if (!was_async) - cond_resched(); + cond_resched(); goto next_folio; } @@ -365,7 +364,7 @@ static void netfs_rreq_assess_dio(struct netfs_io_request *rreq) * Note that we're in normal kernel thread context at this point, possibly * running on a workqueue. */ -static void netfs_rreq_assess(struct netfs_io_request *rreq) +void netfs_rreq_terminated(struct netfs_io_request *rreq) { trace_netfs_rreq(rreq, netfs_rreq_trace_assess); @@ -392,56 +391,29 @@ static void netfs_rreq_assess(struct netfs_io_request *rreq) netfs_pgpriv2_write_to_the_cache(rreq); } -void netfs_read_termination_worker(struct work_struct *work) -{ - struct netfs_io_request *rreq = - container_of(work, struct netfs_io_request, work); - netfs_see_request(rreq, netfs_rreq_trace_see_work); - netfs_rreq_assess(rreq); - netfs_put_request(rreq, false, netfs_rreq_trace_put_work_complete); -} - -/* - * Handle the completion of all outstanding I/O operations on a read request. - * We inherit a ref from the caller. - */ -void netfs_rreq_terminated(struct netfs_io_request *rreq, bool was_async) -{ - if (!was_async) - return netfs_rreq_assess(rreq); - if (!work_pending(&rreq->work)) { - netfs_get_request(rreq, netfs_rreq_trace_get_work); - if (!queue_work(system_unbound_wq, &rreq->work)) - netfs_put_request(rreq, was_async, netfs_rreq_trace_put_work_nq); - } -} - /** * netfs_read_subreq_progress - Note progress of a read operation. * @subreq: The read request that has terminated. - * @was_async: True if we're in an asynchronous context. * * This tells the read side of netfs lib that a contributory I/O operation has * made some progress and that it may be possible to unlock some folios. * * Before calling, the filesystem should update subreq->transferred to track * the amount of data copied into the output buffer. - * - * If @was_async is true, the caller might be running in softirq or interrupt - * context and we can't sleep. */ -void netfs_read_subreq_progress(struct netfs_io_subrequest *subreq, - bool was_async) +void netfs_read_subreq_progress(struct netfs_io_subrequest *subreq) { struct netfs_io_request *rreq = subreq->rreq; + might_sleep(); + trace_netfs_sreq(subreq, netfs_sreq_trace_progress); if (subreq->transferred > subreq->consumed && (rreq->origin == NETFS_READAHEAD || rreq->origin == NETFS_READPAGE || rreq->origin == NETFS_READ_FOR_WRITE)) { - netfs_consume_read_data(subreq, was_async); + netfs_consume_read_data(subreq); __clear_bit(NETFS_SREQ_NO_PROGRESS, &subreq->flags); } } @@ -450,7 +422,6 @@ EXPORT_SYMBOL(netfs_read_subreq_progress); /** * netfs_read_subreq_terminated - Note the termination of an I/O operation. * @subreq: The I/O request that has terminated. - * @was_async: True if we're in an asynchronous context. * * This tells the read helper that a contributory I/O operation has terminated, * one way or another, and that it should integrate the results. @@ -464,7 +435,7 @@ EXPORT_SYMBOL(netfs_read_subreq_progress); * Before calling, the filesystem should update subreq->transferred to track * the amount of data copied into the output buffer. */ -void netfs_read_subreq_terminated(struct netfs_io_subrequest *subreq, bool was_async) +void netfs_read_subreq_terminated(struct netfs_io_subrequest *subreq) { struct netfs_io_request *rreq = subreq->rreq; @@ -498,7 +469,7 @@ void netfs_read_subreq_terminated(struct netfs_io_subrequest *subreq, bool was_a (rreq->origin == NETFS_READAHEAD || rreq->origin == NETFS_READPAGE || rreq->origin == NETFS_READ_FOR_WRITE)) { - netfs_consume_read_data(subreq, was_async); + netfs_consume_read_data(subreq); __clear_bit(NETFS_SREQ_NO_PROGRESS, &subreq->flags); } rreq->transferred += subreq->transferred; @@ -540,9 +511,9 @@ void netfs_read_subreq_terminated(struct netfs_io_subrequest *subreq, bool was_a } if (atomic_dec_and_test(&rreq->nr_outstanding)) - netfs_rreq_terminated(rreq, was_async); + netfs_rreq_terminated(rreq); - netfs_put_subrequest(subreq, was_async, netfs_sreq_trace_put_terminated); + netfs_put_subrequest(subreq, false, netfs_sreq_trace_put_terminated); } EXPORT_SYMBOL(netfs_read_subreq_terminated); @@ -558,6 +529,6 @@ void netfs_read_subreq_termination_worker(struct work_struct *work) struct netfs_io_subrequest *subreq = container_of(work, struct netfs_io_subrequest, work); - netfs_read_subreq_terminated(subreq, false); + netfs_read_subreq_terminated(subreq); } EXPORT_SYMBOL(netfs_read_subreq_termination_worker); diff --git a/fs/netfs/read_retry.c b/fs/netfs/read_retry.c index 0fe7677b4022..d1986cec3db7 100644 --- a/fs/netfs/read_retry.c +++ b/fs/netfs/read_retry.c @@ -232,7 +232,7 @@ void netfs_retry_reads(struct netfs_io_request *rreq) netfs_retry_read_subrequests(rreq); if (atomic_dec_and_test(&rreq->nr_outstanding)) - netfs_rreq_terminated(rreq, false); + netfs_rreq_terminated(rreq); } /* diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c index e585a7bcfe4d..2f3c4f773d73 100644 --- a/fs/nfs/fscache.c +++ b/fs/nfs/fscache.c @@ -309,7 +309,7 @@ static void nfs_netfs_issue_read(struct netfs_io_subrequest *sreq) netfs = nfs_netfs_alloc(sreq); if (!netfs) { sreq->error = -ENOMEM; - return netfs_read_subreq_terminated(sreq, false); + return netfs_read_subreq_terminated(sreq); } pgio.pg_netfs = netfs; /* used in completion */ diff --git a/fs/nfs/fscache.h b/fs/nfs/fscache.h index 1d86f7cc7195..9d86868f4998 100644 --- a/fs/nfs/fscache.h +++ b/fs/nfs/fscache.h @@ -75,7 +75,7 @@ static inline void nfs_netfs_put(struct nfs_netfs_io_data *netfs) netfs->sreq->transferred = min_t(s64, netfs->sreq->len, atomic64_read(&netfs->transferred)); netfs->sreq->error = netfs->error; - netfs_read_subreq_terminated(netfs->sreq, false); + netfs_read_subreq_terminated(netfs->sreq); kfree(netfs); } static inline void nfs_netfs_inode_init(struct nfs_inode *nfsi) diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c index 10dd440f8178..27a1757a278e 100644 --- a/fs/smb/client/file.c +++ b/fs/smb/client/file.c @@ -228,7 +228,7 @@ static void cifs_issue_read(struct netfs_io_subrequest *subreq) failed: subreq->error = rc; - netfs_read_subreq_terminated(subreq, false); + netfs_read_subreq_terminated(subreq); } /* diff --git a/include/linux/netfs.h b/include/linux/netfs.h index a3aa36c1869f..738c9c8763f0 100644 --- a/include/linux/netfs.h +++ b/include/linux/netfs.h @@ -428,8 +428,8 @@ bool netfs_release_folio(struct folio *folio, gfp_t gfp); vm_fault_t netfs_page_mkwrite(struct vm_fault *vmf, struct netfs_group *netfs_group); /* (Sub)request management API. */ -void netfs_read_subreq_progress(struct netfs_io_subrequest *subreq, bool was_async); -void netfs_read_subreq_terminated(struct netfs_io_subrequest *subreq, bool was_async); +void netfs_read_subreq_progress(struct netfs_io_subrequest *subreq); +void netfs_read_subreq_terminated(struct netfs_io_subrequest *subreq); void netfs_read_subreq_termination_worker(struct work_struct *work); void netfs_get_subrequest(struct netfs_io_subrequest *subreq, enum netfs_sreq_ref_trace what);

[v2,10/31] netfs: Drop the was_async arg from netfs_read_subreq_terminated()

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Patch