[PATCH 3/8] autofs: refactor super block info init

From: Ian Kent
Date: Fri Sep 22 2023 - 00:13:06 EST


Move the allocation and initialisation of the super block
info struct to its own function.

Signed-off-by: Ian Kent <raven@xxxxxxxxxx>
---
fs/autofs/inode.c | 53 +++++++++++++++++++++++++----------------------
1 file changed, 28 insertions(+), 25 deletions(-)

diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index e279e275b0a5..992d6cb29707 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -171,11 +171,6 @@ static int parse_options(char *options,
root->i_uid = current_uid();
root->i_gid = current_gid();

- sbi->min_proto = AUTOFS_MIN_PROTO_VERSION;
- sbi->max_proto = AUTOFS_MAX_PROTO_VERSION;
-
- sbi->pipefd = -1;
-
if (!options)
return 1;

@@ -248,41 +243,49 @@ static int parse_options(char *options,
return (sbi->pipefd < 0);
}

-int autofs_fill_super(struct super_block *s, void *data, int silent)
+static struct autofs_sb_info *autofs_alloc_sbi(void)
{
- struct inode *root_inode;
- struct dentry *root;
struct autofs_sb_info *sbi;
- struct autofs_info *ino;
- int pgrp = 0;
- bool pgrp_set = false;
- int ret = -EINVAL;

sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
- return -ENOMEM;
- pr_debug("starting up, sbi = %p\n", sbi);
+ return NULL;

- s->s_fs_info = sbi;
sbi->magic = AUTOFS_SBI_MAGIC;
- sbi->pipefd = -1;
- sbi->pipe = NULL;
- sbi->exp_timeout = 0;
- sbi->oz_pgrp = NULL;
- sbi->sb = s;
- sbi->version = 0;
- sbi->sub_version = 0;
sbi->flags = AUTOFS_SBI_CATATONIC;
+ sbi->min_proto = AUTOFS_MIN_PROTO_VERSION;
+ sbi->max_proto = AUTOFS_MAX_PROTO_VERSION;
+ sbi->pipefd = -1;
+
set_autofs_type_indirect(&sbi->type);
- sbi->min_proto = 0;
- sbi->max_proto = 0;
mutex_init(&sbi->wq_mutex);
mutex_init(&sbi->pipe_mutex);
spin_lock_init(&sbi->fs_lock);
- sbi->queues = NULL;
spin_lock_init(&sbi->lookup_lock);
INIT_LIST_HEAD(&sbi->active_list);
INIT_LIST_HEAD(&sbi->expiring_list);
+
+ return sbi;
+}
+
+int autofs_fill_super(struct super_block *s, void *data, int silent)
+{
+ struct inode *root_inode;
+ struct dentry *root;
+ struct autofs_sb_info *sbi;
+ struct autofs_info *ino;
+ int pgrp = 0;
+ bool pgrp_set = false;
+ int ret = -EINVAL;
+
+ sbi = autofs_alloc_sbi();
+ if (!sbi)
+ return -ENOMEM;
+
+ pr_debug("starting up, sbi = %p\n", sbi);
+
+ sbi->sb = s;
+ s->s_fs_info = sbi;
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
s->s_magic = AUTOFS_SUPER_MAGIC;
--
2.41.0