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Registered in England and Wales under Company Registration No. 3798903 Subject: [RFC PATCH 10/76] fscache: Remove fscache_attr_changed() From: David Howells To: Trond Myklebust , Anna Schumaker , Steve French , Dominique Martinet Cc: dhowells@redhat.com, Jeff Layton , Matthew Wilcox , 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: Fri, 20 Nov 2020 15:04:46 +0000 Message-ID: <160588468676.3465195.6947215951308566547.stgit@warthog.procyon.org.uk> In-Reply-To: <160588455242.3465195.3214733858273019178.stgit@warthog.procyon.org.uk> References: <160588455242.3465195.3214733858273019178.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.23 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Remove fscache_attr_changed() as it's unused. Signed-off-by: David Howells --- fs/cachefiles/interface.c | 13 ++--- fs/fscache/Makefile | 3 - fs/fscache/page.c | 98 ----------------------------------------- include/linux/fscache-cache.h | 4 -- include/linux/fscache.h | 21 --------- 5 files changed, 6 insertions(+), 133 deletions(-) delete mode 100644 fs/fscache/page.c diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c index a3837ed090a8..81322e3acadd 100644 --- a/fs/cachefiles/interface.c +++ b/fs/cachefiles/interface.c @@ -10,7 +10,7 @@ #include #include "internal.h" -static int cachefiles_attr_changed(struct fscache_object *_object); +static int cachefiles_attr_changed(struct cachefiles_object *object); /* * allocate an object record for a cookie lookup and prepare the lookup data @@ -110,7 +110,7 @@ static int cachefiles_lookup_object(struct fscache_object *_object) /* polish off by setting the attributes of non-index files */ if (ret == 0 && object->fscache.cookie->type != FSCACHE_COOKIE_TYPE_INDEX) - cachefiles_attr_changed(&object->fscache); + cachefiles_attr_changed(object); if (ret < 0 && ret != -ETIMEDOUT) { if (ret != -ENOBUFS) @@ -324,9 +324,8 @@ static void cachefiles_sync_cache(struct fscache_cache *_cache) * notification the attributes on an object have changed * - called with reads/writes excluded by FS-Cache */ -static int cachefiles_attr_changed(struct fscache_object *_object) +static int cachefiles_attr_changed(struct cachefiles_object *object) { - struct cachefiles_object *object; struct cachefiles_cache *cache; const struct cred *saved_cred; struct iattr newattrs; @@ -334,12 +333,11 @@ static int cachefiles_attr_changed(struct fscache_object *_object) loff_t oi_size; int ret; - ni_size = _object->cookie->object_size; + ni_size = object->fscache.cookie->object_size; _enter("{OBJ%x},[%llu]", - _object->debug_id, (unsigned long long) ni_size); + object->fscache.debug_id, (unsigned long long) ni_size); - object = container_of(_object, struct cachefiles_object, fscache); cache = container_of(object->fscache.cache, struct cachefiles_cache, cache); @@ -442,5 +440,4 @@ const struct fscache_cache_ops cachefiles_cache_ops = { .drop_object = cachefiles_drop_object, .put_object = cachefiles_put_object, .sync_cache = cachefiles_sync_cache, - .attr_changed = cachefiles_attr_changed, }; diff --git a/fs/fscache/Makefile b/fs/fscache/Makefile index 79e08e05ef84..565a3441d31d 100644 --- a/fs/fscache/Makefile +++ b/fs/fscache/Makefile @@ -10,8 +10,7 @@ fscache-y := \ main.o \ netfs.o \ object.o \ - operation.o \ - page.o + operation.o fscache-$(CONFIG_PROC_FS) += proc.o fscache-$(CONFIG_FSCACHE_STATS) += stats.o diff --git a/fs/fscache/page.c b/fs/fscache/page.c deleted file mode 100644 index 73636e9d652d..000000000000 --- a/fs/fscache/page.c +++ /dev/null @@ -1,98 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* Cache page management and data I/O routines - * - * Copyright (C) 2004-2008 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - */ - -#define FSCACHE_DEBUG_LEVEL PAGE -#include -#include -#include -#include -#include -#include "internal.h" - -/* - * actually apply the changed attributes to a cache object - */ -static void fscache_attr_changed_op(struct fscache_operation *op) -{ - struct fscache_object *object = op->object; - int ret; - - _enter("{OBJ%x OP%x}", object->debug_id, op->debug_id); - - fscache_stat(&fscache_n_attr_changed_calls); - - if (fscache_object_is_active(object)) { - fscache_stat(&fscache_n_cop_attr_changed); - ret = object->cache->ops->attr_changed(object); - fscache_stat_d(&fscache_n_cop_attr_changed); - if (ret < 0) - fscache_abort_object(object); - fscache_op_complete(op, ret < 0); - } else { - fscache_op_complete(op, true); - } - - _leave(""); -} - -/* - * notification that the attributes on an object have changed - */ -int __fscache_attr_changed(struct fscache_cookie *cookie) -{ - struct fscache_operation *op; - struct fscache_object *object; - bool wake_cookie = false; - - _enter("%p", cookie); - - ASSERTCMP(cookie->type, !=, FSCACHE_COOKIE_TYPE_INDEX); - - fscache_stat(&fscache_n_attr_changed); - - op = kzalloc(sizeof(*op), GFP_KERNEL); - if (!op) { - fscache_stat(&fscache_n_attr_changed_nomem); - _leave(" = -ENOMEM"); - return -ENOMEM; - } - - fscache_operation_init(cookie, op, fscache_attr_changed_op, NULL, NULL); - trace_fscache_page_op(cookie, NULL, op, fscache_page_op_attr_changed); - op->flags = FSCACHE_OP_ASYNC | - (1 << FSCACHE_OP_EXCLUSIVE) | - (1 << FSCACHE_OP_UNUSE_COOKIE); - - spin_lock(&cookie->lock); - - if (!fscache_cookie_enabled(cookie) || - hlist_empty(&cookie->backing_objects)) - goto nobufs; - object = hlist_entry(cookie->backing_objects.first, - struct fscache_object, cookie_link); - - __fscache_use_cookie(cookie); - if (fscache_submit_exclusive_op(object, op) < 0) - goto nobufs_dec; - spin_unlock(&cookie->lock); - fscache_stat(&fscache_n_attr_changed_ok); - fscache_put_operation(op); - _leave(" = 0"); - return 0; - -nobufs_dec: - wake_cookie = __fscache_unuse_cookie(cookie); -nobufs: - spin_unlock(&cookie->lock); - fscache_put_operation(op); - if (wake_cookie) - __fscache_wake_unused_cookie(cookie); - fscache_stat(&fscache_n_attr_changed_nobufs); - _leave(" = %d", -ENOBUFS); - return -ENOBUFS; -} -EXPORT_SYMBOL(__fscache_attr_changed); diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index bd9411cd466f..60b2f8288668 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -184,10 +184,6 @@ struct fscache_cache_ops { /* sync a cache */ void (*sync_cache)(struct fscache_cache *cache); - /* notification that the attributes of a non-index object (such as - * i_size) have changed */ - int (*attr_changed)(struct fscache_object *object); - /* reserve space for an object's data and associated metadata */ int (*reserve_space)(struct fscache_object *object, loff_t i_size); }; diff --git a/include/linux/fscache.h b/include/linux/fscache.h index 76cfec6868de..c62b62938c4d 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h @@ -140,7 +140,6 @@ extern struct fscache_cookie *__fscache_acquire_cookie( loff_t, bool); extern void __fscache_relinquish_cookie(struct fscache_cookie *, const void *, bool); extern void __fscache_update_cookie(struct fscache_cookie *, const void *); -extern int __fscache_attr_changed(struct fscache_cookie *); extern void __fscache_invalidate(struct fscache_cookie *); extern void __fscache_wait_on_invalidate(struct fscache_cookie *); extern void __fscache_disable_cookie(struct fscache_cookie *, const void *, bool); @@ -337,26 +336,6 @@ void fscache_unpin_cookie(struct fscache_cookie *cookie) { } -/** - * fscache_attr_changed - Notify cache that an object's attributes changed - * @cookie: The cookie representing the cache object - * - * Send a notification to the cache indicating that an object's attributes have - * changed. This includes the data size. These attributes will be obtained - * through the get_attr() cookie definition op. - * - * See Documentation/filesystems/caching/netfs-api.rst for a complete - * description. - */ -static inline -int fscache_attr_changed(struct fscache_cookie *cookie) -{ - if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie)) - return __fscache_attr_changed(cookie); - else - return -ENOBUFS; -} - /** * fscache_invalidate - Notify cache that an object needs invalidation * @cookie: The cookie representing the cache object