diff options
| author | Kinglong Mee <kinglongmee@gmail.com> | 2015-07-27 11:09:10 +0800 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2015-08-13 08:59:01 -0400 |
| commit | 9936f2ae37482aff54ce53918c69b378bb50097c (patch) | |
| tree | ccadc3178cba20976d01224cdacbe976aab45690 /net | |
| parent | 7ba6cad6c88f1bf0b7d66d9628d7c3f36ecb4bfe (diff) | |
sunrpc: Store cache_detail in seq_file's private directly
Cleanup.
Just store cache_detail in seq_file's private,
an allocated handle is redundant.
v8, same as v6.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/cache.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c index 2928afffbb81..edec603abc17 100644 --- a/net/sunrpc/cache.c +++ b/net/sunrpc/cache.c @@ -1270,18 +1270,13 @@ EXPORT_SYMBOL_GPL(qword_get); * get a header, then pass each real item in the cache */ -struct handle { - struct cache_detail *cd; -}; - static void *c_start(struct seq_file *m, loff_t *pos) __acquires(cd->hash_lock) { loff_t n = *pos; unsigned int hash, entry; struct cache_head *ch; - struct cache_detail *cd = ((struct handle*)m->private)->cd; - + struct cache_detail *cd = m->private; read_lock(&cd->hash_lock); if (!n--) @@ -1308,7 +1303,7 @@ static void *c_next(struct seq_file *m, void *p, loff_t *pos) { struct cache_head *ch = p; int hash = (*pos >> 32); - struct cache_detail *cd = ((struct handle*)m->private)->cd; + struct cache_detail *cd = m->private; if (p == SEQ_START_TOKEN) hash = 0; @@ -1334,14 +1329,14 @@ static void *c_next(struct seq_file *m, void *p, loff_t *pos) static void c_stop(struct seq_file *m, void *p) __releases(cd->hash_lock) { - struct cache_detail *cd = ((struct handle*)m->private)->cd; + struct cache_detail *cd = m->private; read_unlock(&cd->hash_lock); } static int c_show(struct seq_file *m, void *p) { struct cache_head *cp = p; - struct cache_detail *cd = ((struct handle*)m->private)->cd; + struct cache_detail *cd = m->private; if (p == SEQ_START_TOKEN) return cd->cache_show(m, cd, NULL); @@ -1373,24 +1368,27 @@ static const struct seq_operations cache_content_op = { static int content_open(struct inode *inode, struct file *file, struct cache_detail *cd) { - struct handle *han; + struct seq_file *seq; + int err; if (!cd || !try_module_get(cd->owner)) return -EACCES; - han = __seq_open_private(file, &cache_content_op, sizeof(*han)); - if (han == NULL) { + + err = seq_open(file, &cache_content_op); + if (err) { module_put(cd->owner); - return -ENOMEM; + return err; } - han->cd = cd; + seq = file->private_data; + seq->private = cd; return 0; } static int content_release(struct inode *inode, struct file *file, struct cache_detail *cd) { - int ret = seq_release_private(inode, file); + int ret = seq_release(inode, file); module_put(cd->owner); return ret; } |