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Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH v4 26/28] afs: Use the fs operation ops to handle FetchData completion From: David Howells To: Trond Myklebust , Anna Schumaker , Steve French , Dominique Martinet Cc: linux-afs@lists.infradead.org, linux-cachefs@redhat.com, linux-fsdevel@vger.kernel.org, dhowells@redhat.com, Jeff Layton , David Wysochanski , "Matthew Wilcox (Oracle)" , Alexander Viro , linux-cachefs@redhat.com, linux-afs@lists.infradead.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs-developer@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Wed, 10 Mar 2021 17:00:06 +0000 Message-ID: <161539560673.286939.391310781674212229.stgit@warthog.procyon.org.uk> In-Reply-To: <161539526152.286939.8589700175877370401.stgit@warthog.procyon.org.uk> References: <161539526152.286939.8589700175877370401.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.23 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Use the 'success' and 'aborted' afs_operations_ops methods and add a 'failed' method to handle the completion of an AFS.FetchData, AFS.FetchData64 or YFS.FetchData64 RPC operation rather than directly calling the done func pointed to by the afs_read struct from the call delivery handler. This means the done function will be called back on error also, not just on successful completion. This allows motion towards asynchronous data reception on data fetch calls and allows any error to be handed off to the fscache read helper in the same place as a successful completion. Signed-off-by: David Howells cc: linux-afs@lists.infradead.org cc: linux-cachefs@redhat.com cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/160588541471.3465195.8807019223378490810.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161118157260.1232039.6549085372718234792.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161161052647.2537118.12922380836599003659.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161340417106.1303470.3502017303898569631.stgit@warthog.procyon.org.uk/ # v3 --- fs/afs/file.c | 15 +++++++++++++++ fs/afs/fs_operation.c | 4 +++- fs/afs/fsclient.c | 3 --- fs/afs/internal.h | 1 + fs/afs/yfsclient.c | 3 --- 5 files changed, 19 insertions(+), 7 deletions(-) diff --git a/fs/afs/file.c b/fs/afs/file.c index f6282ac0d222..231e9fd7882b 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -255,6 +255,19 @@ void afs_put_read(struct afs_read *req) } } +static void afs_fetch_data_notify(struct afs_operation *op) +{ + struct afs_read *req = op->fetch.req; + int error = op->error; + + if (error == -ECONNABORTED) + error = afs_abort_to_error(op->ac.abort_code); + req->error = error; + + if (req->done) + req->done(req); +} + static void afs_fetch_data_success(struct afs_operation *op) { struct afs_vnode *vnode = op->file[0].vnode; @@ -263,6 +276,7 @@ static void afs_fetch_data_success(struct afs_operation *op) afs_vnode_commit_status(op, &op->file[0]); afs_stat_v(vnode, n_fetches); atomic_long_add(op->fetch.req->actual_len, &op->net->n_fetch_bytes); + afs_fetch_data_notify(op); } static void afs_fetch_data_put(struct afs_operation *op) @@ -276,6 +290,7 @@ static const struct afs_operation_ops afs_fetch_data_operation = { .issue_yfs_rpc = yfs_fs_fetch_data, .success = afs_fetch_data_success, .aborted = afs_check_for_remote_deletion, + .failed = afs_fetch_data_notify, .put = afs_fetch_data_put, }; diff --git a/fs/afs/fs_operation.c b/fs/afs/fs_operation.c index 97cab12b0a6c..938e28a00101 100644 --- a/fs/afs/fs_operation.c +++ b/fs/afs/fs_operation.c @@ -195,8 +195,10 @@ void afs_wait_for_operation(struct afs_operation *op) case -ECONNABORTED: if (op->ops->aborted) op->ops->aborted(op); - break; + fallthrough; default: + if (op->ops->failed) + op->ops->failed(op); break; } diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index 31e6b3635541..5e34f4dbd385 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -392,9 +392,6 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call) break; } - if (req->done) - req->done(req); - _leave(" = 0 [done]"); return 0; } diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 889f504d7308..62c1b38fa98b 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -742,6 +742,7 @@ struct afs_operation_ops { void (*issue_yfs_rpc)(struct afs_operation *op); void (*success)(struct afs_operation *op); void (*aborted)(struct afs_operation *op); + void (*failed)(struct afs_operation *op); void (*edit_dir)(struct afs_operation *op); void (*put)(struct afs_operation *op); }; diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c index 363d6dd276c0..2b35cba8ad62 100644 --- a/fs/afs/yfsclient.c +++ b/fs/afs/yfsclient.c @@ -449,9 +449,6 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) break; } - if (req->done) - req->done(req); - _leave(" = 0 [done]"); return 0; }