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Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 37/67] fscache: Move fscache_update_cookie() complete inline From: David Howells To: linux-cachefs@redhat.com Cc: dhowells@redhat.com, Trond Myklebust , Anna Schumaker , Steve French , Dominique Martinet , Jeff Layton , Matthew Wilcox , Alexander Viro , Omar Sandoval , Linus Torvalds , 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: Mon, 18 Oct 2021 16:00:19 +0100 Message-ID: <163456921953.2614702.8851027265019457749.stgit@warthog.procyon.org.uk> In-Reply-To: <163456861570.2614702.14754548462706508617.stgit@warthog.procyon.org.uk> References: <163456861570.2614702.14754548462706508617.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: linux-cifs@vger.kernel.org --- fs/fscache/cookie.c | 18 ----------------- fs/fscache/internal.h | 18 ----------------- fs/fscache/stats.c | 9 +++------ include/linux/fscache-cache.h | 11 ---------- include/linux/fscache.h | 43 ++++++++++++++++++++++++++++++++++++++++- 5 files changed, 45 insertions(+), 54 deletions(-) diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c index c6b553609f33..94976f90dc71 100644 --- a/fs/fscache/cookie.c +++ b/fs/fscache/cookie.c @@ -748,24 +748,6 @@ void __fscache_invalidate(struct fscache_cookie *cookie) } EXPORT_SYMBOL(__fscache_invalidate); -/* - * Update the index entries backing a cookie. The writeback is done lazily. - */ -void __fscache_update_cookie(struct fscache_cookie *cookie, - const void *aux_data, const loff_t *object_size) -{ - fscache_stat(&fscache_n_updates); - - spin_lock(&cookie->lock); - - fscache_update_aux(cookie, aux_data, object_size); - set_bit(FSCACHE_COOKIE_NEEDS_UPDATE, &cookie->flags); - - spin_unlock(&cookie->lock); - _leave(""); -} -EXPORT_SYMBOL(__fscache_update_cookie); - /* * Remove a cookie from the hash table. */ diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h index 62e6a5bbef8e..1cb1effa7cba 100644 --- a/fs/fscache/internal.h +++ b/fs/fscache/internal.h @@ -107,10 +107,6 @@ extern atomic_t fscache_n_acquires_oom; extern atomic_t fscache_n_invalidates; extern atomic_t fscache_n_invalidates_run; -extern atomic_t fscache_n_updates; -extern atomic_t fscache_n_updates_null; -extern atomic_t fscache_n_updates_run; - extern atomic_t fscache_n_relinquishes; extern atomic_t fscache_n_relinquishes_null; extern atomic_t fscache_n_relinquishes_retire; @@ -152,20 +148,6 @@ bool fscache_begin_volume_access(struct fscache_volume *volume, enum fscache_access_trace why); void fscache_create_volume(struct fscache_volume *volume, bool wait); -/* - * Update the auxiliary data on a cookie. - */ -static inline -void fscache_update_aux(struct fscache_cookie *cookie, - const void *aux_data, const loff_t *object_size) -{ - void *p = fscache_get_aux(cookie); - - if (aux_data && p) - memcpy(p, aux_data, cookie->aux_len); - if (object_size) - cookie->object_size = *object_size; -} /*****************************************************************************/ /* diff --git a/fs/fscache/stats.c b/fs/fscache/stats.c index 5700e5712018..a16473df8be0 100644 --- a/fs/fscache/stats.c +++ b/fs/fscache/stats.c @@ -55,8 +55,7 @@ atomic_t fscache_n_invalidates; atomic_t fscache_n_invalidates_run; atomic_t fscache_n_updates; -atomic_t fscache_n_updates_null; -atomic_t fscache_n_updates_run; +EXPORT_SYMBOL(fscache_n_updates); atomic_t fscache_n_relinquishes; atomic_t fscache_n_relinquishes_null; @@ -105,10 +104,8 @@ int fscache_stats_show(struct seq_file *m, void *v) atomic_read(&fscache_n_invalidates), atomic_read(&fscache_n_invalidates_run)); - seq_printf(m, "Updates: n=%u nul=%u run=%u\n", - atomic_read(&fscache_n_updates), - atomic_read(&fscache_n_updates_null), - atomic_read(&fscache_n_updates_run)); + seq_printf(m, "Updates: n=%u\n", + atomic_read(&fscache_n_updates)); seq_printf(m, "Relinqs: n=%u rtr=%u drop=%u\n", atomic_read(&fscache_n_relinquishes), diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index 657e54b4cd90..bf0d3e862915 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -139,17 +139,6 @@ static inline void *fscache_get_key(struct fscache_cookie *cookie) return cookie->key; } -/* - * Find the auxiliary data on a cookie. - */ -static inline void *fscache_get_aux(struct fscache_cookie *cookie) -{ - if (cookie->aux_len <= sizeof(cookie->inline_aux)) - return cookie->inline_aux; - else - return cookie->aux; -} - /** * fscache_cookie_lookup_negative - Note negative lookup * @cookie: The cookie that was being looked up diff --git a/include/linux/fscache.h b/include/linux/fscache.h index c6ee09661351..41e579ff65ee 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h @@ -159,7 +159,6 @@ extern struct fscache_cookie *__fscache_acquire_cookie( extern void __fscache_use_cookie(struct fscache_cookie *, bool); extern void __fscache_unuse_cookie(struct fscache_cookie *, const void *, const loff_t *); extern void __fscache_relinquish_cookie(struct fscache_cookie *, bool); -extern void __fscache_update_cookie(struct fscache_cookie *, const void *, const loff_t *); extern void __fscache_invalidate(struct fscache_cookie *); #ifdef FSCACHE_USE_NEW_IO_API extern int __fscache_begin_read_operation(struct netfs_cache_resources *, struct fscache_cookie *); @@ -293,6 +292,48 @@ void fscache_relinquish_cookie(struct fscache_cookie *cookie, bool retire) __fscache_relinquish_cookie(cookie, retire); } +/* + * Find the auxiliary data on a cookie. + */ +static inline void *fscache_get_aux(struct fscache_cookie *cookie) +{ + if (cookie->aux_len <= sizeof(cookie->inline_aux)) + return cookie->inline_aux; + else + return cookie->aux; +} + +/* + * Update the auxiliary data on a cookie. + */ +static inline +void fscache_update_aux(struct fscache_cookie *cookie, + const void *aux_data, const loff_t *object_size) +{ + void *p = fscache_get_aux(cookie); + + if (aux_data && p) + memcpy(p, aux_data, cookie->aux_len); + if (object_size) + cookie->object_size = *object_size; +} + +#ifdef CONFIG_FSCACHE_STATS +extern atomic_t fscache_n_updates; +#endif + +static inline +void __fscache_update_cookie(struct fscache_cookie *cookie, const void *aux_data, + const loff_t *object_size) +{ +#ifdef CONFIG_FSCACHE_STATS + atomic_inc(&fscache_n_updates); +#endif + fscache_update_aux(cookie, aux_data, object_size); + smp_wmb(); + set_bit(FSCACHE_COOKIE_NEEDS_UPDATE, &cookie->flags); +} + /** * fscache_update_cookie - Request that a cache object be updated * @cookie: The cookie representing the cache object