5.15-stable review patch. If anyone has any objections, please let me know.
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From: ChenXiaoSong chenxiaosong2@huawei.com
[ Upstream commit 64776611a06322b99386f8dfe3b3ba1aa0347a38 ]
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 [ cel: reduce line length ] Signed-off-by: Chuck Lever chuck.lever@oracle.com --- fs/nfsd/cache.h | 2 +- fs/nfsd/nfscache.c | 13 +++---------- fs/nfsd/nfsctl.c | 10 +++------- 3 files changed, 7 insertions(+), 18 deletions(-)
diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h index 65c331f75e9c7..f21259ead64bb 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 7da88bdc0d6c3..2b5417e06d80d 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -603,9 +603,10 @@ 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", @@ -625,11 +626,3 @@ 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 3ed0cfdb0c0b5..1983f4f2908d9 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 +1349,8 @@ 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},