* [PATCH 1/5] nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE to define nfsd_proc_ops
2022-09-22 16:31 [PATCH 0/5] nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE/DEFINE_SHOW_ATTRIBUTE to simplify the code ChenXiaoSong
@ 2022-09-22 16:31 ` ChenXiaoSong
2022-09-22 16:31 ` [PATCH 2/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define export_features_fops and supported_enctypes_fops ChenXiaoSong
` (3 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: ChenXiaoSong @ 2022-09-22 16:31 UTC (permalink / raw)
To: chuck.lever, jlayton
Cc: linux-nfs, linux-kernel, chenxiaosong2, yi.zhang, zhangxiaoxu5
Use DEFINE_PROC_SHOW_ATTRIBUTE helper macro to simplify the code.
Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
---
fs/nfsd/stats.c | 14 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c
index a8c5a02a84f0..777e24e5da33 100644
--- a/fs/nfsd/stats.c
+++ b/fs/nfsd/stats.c
@@ -32,7 +32,7 @@ struct svc_stat nfsd_svcstats = {
.program = &nfsd_program,
};
-static int nfsd_proc_show(struct seq_file *seq, void *v)
+static int nfsd_show(struct seq_file *seq, void *v)
{
int i;
@@ -72,17 +72,7 @@ static int nfsd_proc_show(struct seq_file *seq, void *v)
return 0;
}
-static int nfsd_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, nfsd_proc_show, NULL);
-}
-
-static const struct proc_ops nfsd_proc_ops = {
- .proc_open = nfsd_proc_open,
- .proc_read = seq_read,
- .proc_lseek = seq_lseek,
- .proc_release = single_release,
-};
+DEFINE_PROC_SHOW_ATTRIBUTE(nfsd);
int nfsd_percpu_counters_init(struct percpu_counter counters[], int num)
{
--
2.31.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 2/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define export_features_fops and supported_enctypes_fops
2022-09-22 16:31 [PATCH 0/5] nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE/DEFINE_SHOW_ATTRIBUTE to simplify the code ChenXiaoSong
2022-09-22 16:31 ` [PATCH 1/5] nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE to define nfsd_proc_ops ChenXiaoSong
@ 2022-09-22 16:31 ` ChenXiaoSong
2022-09-22 16:31 ` [PATCH 3/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define client_info_fops ChenXiaoSong
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: ChenXiaoSong @ 2022-09-22 16:31 UTC (permalink / raw)
To: chuck.lever, jlayton
Cc: linux-nfs, linux-kernel, chenxiaosong2, yi.zhang, zhangxiaoxu5
Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
---
fs/nfsd/nfsctl.c | 28 ++++------------------------
1 file changed, 4 insertions(+), 24 deletions(-)
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 917fa1892fd2..51360d0bf424 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -185,17 +185,7 @@ static int export_features_show(struct seq_file *m, void *v)
return 0;
}
-static int export_features_open(struct inode *inode, struct file *file)
-{
- return single_open(file, export_features_show, NULL);
-}
-
-static const struct file_operations export_features_operations = {
- .open = export_features_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(export_features);
#if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
static int supported_enctypes_show(struct seq_file *m, void *v)
@@ -204,17 +194,7 @@ static int supported_enctypes_show(struct seq_file *m, void *v)
return 0;
}
-static int supported_enctypes_open(struct inode *inode, struct file *file)
-{
- return single_open(file, supported_enctypes_show, NULL);
-}
-
-static const struct file_operations supported_enctypes_ops = {
- .open = supported_enctypes_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(supported_enctypes);
#endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
static const struct file_operations pool_stats_operations = {
@@ -1365,7 +1345,7 @@ static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
/* Per-export io stats use same ops as exports file */
[NFSD_Export_Stats] = {"export_stats", &exports_nfsd_operations, S_IRUGO},
[NFSD_Export_features] = {"export_features",
- &export_features_operations, S_IRUGO},
+ &export_features_fops, S_IRUGO},
[NFSD_FO_UnlockIP] = {"unlock_ip",
&transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_FO_UnlockFS] = {"unlock_filesystem",
@@ -1381,7 +1361,7 @@ static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
[NFSD_MaxConnections] = {"max_connections", &transaction_ops, S_IWUSR|S_IRUGO},
[NFSD_Filecache] = {"filecache", &filecache_ops, S_IRUGO},
#if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
- [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO},
+ [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_fops, S_IRUGO},
#endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
#ifdef CONFIG_NFSD_V4
[NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
--
2.31.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 3/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define client_info_fops
2022-09-22 16:31 [PATCH 0/5] nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE/DEFINE_SHOW_ATTRIBUTE to simplify the code ChenXiaoSong
2022-09-22 16:31 ` [PATCH 1/5] nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE to define nfsd_proc_ops ChenXiaoSong
2022-09-22 16:31 ` [PATCH 2/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define export_features_fops and supported_enctypes_fops ChenXiaoSong
@ 2022-09-22 16:31 ` ChenXiaoSong
2022-09-22 17:08 ` Chuck Lever III
2022-09-22 16:31 ` [PATCH 4/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_reply_cache_stats_fops ChenXiaoSong
2022-09-22 16:31 ` [PATCH 5/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_file_cache_stats_fops ChenXiaoSong
4 siblings, 1 reply; 7+ messages in thread
From: ChenXiaoSong @ 2022-09-22 16:31 UTC (permalink / raw)
To: chuck.lever, jlayton
Cc: linux-nfs, linux-kernel, chenxiaosong2, yi.zhang, zhangxiaoxu5
Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
inode is converted from seq_file->file instead of seq_file->private in
client_info_show().
Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
---
fs/nfsd/nfs4state.c | 14 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c5d199d7e6b4..4017721a04c7 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2478,7 +2478,7 @@ static const char *cb_state2str(int state)
static int client_info_show(struct seq_file *m, void *v)
{
- struct inode *inode = m->private;
+ struct inode *inode = file_inode(m->file);
struct nfs4_client *clp;
u64 clid;
@@ -2518,17 +2518,7 @@ static int client_info_show(struct seq_file *m, void *v)
return 0;
}
-static int client_info_open(struct inode *inode, struct file *file)
-{
- return single_open(file, client_info_show, inode);
-}
-
-static const struct file_operations client_info_fops = {
- .open = client_info_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(client_info);
static void *states_start(struct seq_file *s, loff_t *pos)
__acquires(&clp->cl_lock)
--
2.31.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH 3/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define client_info_fops
2022-09-22 16:31 ` [PATCH 3/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define client_info_fops ChenXiaoSong
@ 2022-09-22 17:08 ` Chuck Lever III
0 siblings, 0 replies; 7+ messages in thread
From: Chuck Lever III @ 2022-09-22 17:08 UTC (permalink / raw)
To: ChenXiaoSong
Cc: Jeff Layton, Linux NFS Mailing List, Linux Kernel Mailing List,
yi.zhang, zhangxiaoxu5
> On Sep 22, 2022, at 12:31 PM, ChenXiaoSong <chenxiaosong2@huawei.com> wrote:
>
> Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
>
> inode is converted from seq_file->file instead of seq_file->private in
> client_info_show().
Generally speaking, the patch description should explain why
a change is being made. We can already see that @inode is
converted by looking at the diff below, so the above comment
doesn't add value. Same remark applies to 4/5.
What might work better: "The underlying inode needed by
client_info_show() is already available via struct seq_file.
Thus it is safe to replace client_info_open() with the open
function implicitly defined by DEFINE_SHOW_ATTRIBUTE()."
I'll apply these as-is to nfsd for-next to get them into the
testing pipeline. Thanks!
> Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
> ---
> fs/nfsd/nfs4state.c | 14 ++------------
> 1 file changed, 2 insertions(+), 12 deletions(-)
>
> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> index c5d199d7e6b4..4017721a04c7 100644
> --- a/fs/nfsd/nfs4state.c
> +++ b/fs/nfsd/nfs4state.c
> @@ -2478,7 +2478,7 @@ static const char *cb_state2str(int state)
>
> static int client_info_show(struct seq_file *m, void *v)
> {
> - struct inode *inode = m->private;
> + struct inode *inode = file_inode(m->file);
> struct nfs4_client *clp;
> u64 clid;
>
> @@ -2518,17 +2518,7 @@ static int client_info_show(struct seq_file *m, void *v)
> return 0;
> }
>
> -static int client_info_open(struct inode *inode, struct file *file)
> -{
> - return single_open(file, client_info_show, inode);
> -}
> -
> -static const struct file_operations client_info_fops = {
> - .open = client_info_open,
> - .read = seq_read,
> - .llseek = seq_lseek,
> - .release = single_release,
> -};
> +DEFINE_SHOW_ATTRIBUTE(client_info);
>
> static void *states_start(struct seq_file *s, loff_t *pos)
> __acquires(&clp->cl_lock)
> --
> 2.31.1
>
--
Chuck Lever
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 4/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_reply_cache_stats_fops
2022-09-22 16:31 [PATCH 0/5] nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE/DEFINE_SHOW_ATTRIBUTE to simplify the code ChenXiaoSong
` (2 preceding siblings ...)
2022-09-22 16:31 ` [PATCH 3/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define client_info_fops ChenXiaoSong
@ 2022-09-22 16:31 ` ChenXiaoSong
2022-09-22 16:31 ` [PATCH 5/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_file_cache_stats_fops ChenXiaoSong
4 siblings, 0 replies; 7+ messages in thread
From: ChenXiaoSong @ 2022-09-22 16:31 UTC (permalink / raw)
To: chuck.lever, jlayton
Cc: linux-nfs, linux-kernel, chenxiaosong2, yi.zhang, zhangxiaoxu5
Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
nfsd_net is converted from seq_file->file instead of seq_file->private in
nfsd_reply_cache_stats_show().
Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
---
fs/nfsd/cache.h | 2 +-
fs/nfsd/nfscache.c | 13 +++----------
fs/nfsd/nfsctl.c | 9 ++-------
3 files changed, 6 insertions(+), 18 deletions(-)
diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h
index 65c331f75e9c..f21259ead64b 100644
--- a/fs/nfsd/cache.h
+++ b/fs/nfsd/cache.h
@@ -84,6 +84,6 @@ int nfsd_reply_cache_init(struct nfsd_net *);
void nfsd_reply_cache_shutdown(struct nfsd_net *);
int nfsd_cache_lookup(struct svc_rqst *);
void nfsd_cache_update(struct svc_rqst *, int, __be32 *);
-int nfsd_reply_cache_stats_open(struct inode *, struct file *);
+int nfsd_reply_cache_stats_show(struct seq_file *m, void *v);
#endif /* NFSCACHE_H */
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 9b31e1103e7b..3e64a3d50a1c 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -604,9 +604,10 @@ nfsd_cache_append(struct svc_rqst *rqstp, struct kvec *data)
* scraping this file for info should test the labels to ensure they're
* getting the correct field.
*/
-static int nfsd_reply_cache_stats_show(struct seq_file *m, void *v)
+int nfsd_reply_cache_stats_show(struct seq_file *m, void *v)
{
- struct nfsd_net *nn = m->private;
+ struct nfsd_net *nn = net_generic(file_inode(m->file)->i_sb->s_fs_info,
+ nfsd_net_id);
seq_printf(m, "max entries: %u\n", nn->max_drc_entries);
seq_printf(m, "num entries: %u\n",
@@ -626,11 +627,3 @@ static int nfsd_reply_cache_stats_show(struct seq_file *m, void *v)
seq_printf(m, "cachesize at longest: %u\n", nn->longest_chain_cachesize);
return 0;
}
-
-int nfsd_reply_cache_stats_open(struct inode *inode, struct file *file)
-{
- struct nfsd_net *nn = net_generic(file_inode(file)->i_sb->s_fs_info,
- nfsd_net_id);
-
- return single_open(file, nfsd_reply_cache_stats_show, nn);
-}
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 51360d0bf424..faaedefec94c 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -204,12 +204,7 @@ static const struct file_operations pool_stats_operations = {
.release = nfsd_pool_stats_release,
};
-static const struct file_operations reply_cache_stats_operations = {
- .open = nfsd_reply_cache_stats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(nfsd_reply_cache_stats);
static const struct file_operations filecache_ops = {
.open = nfsd_file_cache_stats_open,
@@ -1354,7 +1349,7 @@ static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
[NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
- [NFSD_Reply_Cache_Stats] = {"reply_cache_stats", &reply_cache_stats_operations, S_IRUGO},
+ [NFSD_Reply_Cache_Stats] = {"reply_cache_stats", &nfsd_reply_cache_stats_fops, S_IRUGO},
[NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
[NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
--
2.31.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 5/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_file_cache_stats_fops
2022-09-22 16:31 [PATCH 0/5] nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE/DEFINE_SHOW_ATTRIBUTE to simplify the code ChenXiaoSong
` (3 preceding siblings ...)
2022-09-22 16:31 ` [PATCH 4/5] nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_reply_cache_stats_fops ChenXiaoSong
@ 2022-09-22 16:31 ` ChenXiaoSong
4 siblings, 0 replies; 7+ messages in thread
From: ChenXiaoSong @ 2022-09-22 16:31 UTC (permalink / raw)
To: chuck.lever, jlayton
Cc: linux-nfs, linux-kernel, chenxiaosong2, yi.zhang, zhangxiaoxu5
Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
---
fs/nfsd/filecache.c | 7 +------
fs/nfsd/filecache.h | 2 +-
fs/nfsd/nfsctl.c | 9 ++-------
3 files changed, 4 insertions(+), 14 deletions(-)
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index eeed4ae5b4ad..d5c57360b418 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -1212,7 +1212,7 @@ nfsd_file_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
* scraping this file for info should test the labels to ensure they're
* getting the correct field.
*/
-static int nfsd_file_cache_stats_show(struct seq_file *m, void *v)
+int nfsd_file_cache_stats_show(struct seq_file *m, void *v)
{
unsigned long releases = 0, pages_flushed = 0, evictions = 0;
unsigned long hits = 0, acquisitions = 0;
@@ -1259,8 +1259,3 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v)
seq_printf(m, "pages flushed: %lu\n", pages_flushed);
return 0;
}
-
-int nfsd_file_cache_stats_open(struct inode *inode, struct file *file)
-{
- return single_open(file, nfsd_file_cache_stats_show, NULL);
-}
diff --git a/fs/nfsd/filecache.h b/fs/nfsd/filecache.h
index 8e8c0c47d67d..357832bac736 100644
--- a/fs/nfsd/filecache.h
+++ b/fs/nfsd/filecache.h
@@ -60,5 +60,5 @@ __be32 nfsd_file_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
unsigned int may_flags, struct nfsd_file **nfp);
__be32 nfsd_file_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
unsigned int may_flags, struct nfsd_file **nfp);
-int nfsd_file_cache_stats_open(struct inode *, struct file *);
+int nfsd_file_cache_stats_show(struct seq_file *m, void *v);
#endif /* _FS_NFSD_FILECACHE_H */
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index faaedefec94c..e6be0e2a86ac 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -206,12 +206,7 @@ static const struct file_operations pool_stats_operations = {
DEFINE_SHOW_ATTRIBUTE(nfsd_reply_cache_stats);
-static const struct file_operations filecache_ops = {
- .open = nfsd_file_cache_stats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(nfsd_file_cache_stats);
/*----------------------------------------------------------------------------*/
/*
@@ -1354,7 +1349,7 @@ static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
[NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
[NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
[NFSD_MaxConnections] = {"max_connections", &transaction_ops, S_IWUSR|S_IRUGO},
- [NFSD_Filecache] = {"filecache", &filecache_ops, S_IRUGO},
+ [NFSD_Filecache] = {"filecache", &nfsd_file_cache_stats_fops, S_IRUGO},
#if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
[NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_fops, S_IRUGO},
#endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
--
2.31.1
^ permalink raw reply related [flat|nested] 7+ messages in thread