From: Christoph Hellwig Subject: [PATCH 37/42] atm: switch to proc_create_seq_private Date: Wed, 16 May 2018 11:43:41 +0200 Message-ID: <20180516094346.20506-38-hch@lst.de> References: <20180516094346.20506-1-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: linux-rtc@vger.kernel.org, Alessandro Zummo , Alexandre Belloni , devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, Greg Kroah-Hartman , jfs-discussion@lists.sourceforge.net, linux-afs@lists.infradead.org, linux-acpi@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, Jiri Slaby , linux-ext4@vger.kernel.org, Alexey Dobriyan , megaraidlinux.pdl@broadcom.com, drbd-dev@lists.linbit.com To: Andrew Morton , Alexander Viro Return-path: In-Reply-To: <20180516094346.20506-1-hch@lst.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" List-Id: linux-ext4.vger.kernel.org And remove proc boilerplate code. Signed-off-by: Christoph Hellwig --- net/atm/proc.c | 72 +++++++++----------------------------------------- 1 file changed, 13 insertions(+), 59 deletions(-) diff --git a/net/atm/proc.c b/net/atm/proc.c index f272b0f59d82..0b0495a41bbe 100644 --- a/net/atm/proc.c +++ b/net/atm/proc.c @@ -68,7 +68,6 @@ static void atm_dev_info(struct seq_file *seq, const struct atm_dev *dev) struct vcc_state { int bucket; struct sock *sk; - int family; }; static inline int compare_family(struct sock *sk, int family) @@ -106,23 +105,13 @@ static int __vcc_walk(struct sock **sock, int family, int *bucket, loff_t l) return (l < 0); } -static inline void *vcc_walk(struct vcc_state *state, loff_t l) +static inline void *vcc_walk(struct seq_file *seq, loff_t l) { - return __vcc_walk(&state->sk, state->family, &state->bucket, l) ? - state : NULL; -} - -static int __vcc_seq_open(struct inode *inode, struct file *file, - int family, const struct seq_operations *ops) -{ - struct vcc_state *state; - - state = __seq_open_private(file, ops, sizeof(*state)); - if (state == NULL) - return -ENOMEM; + struct vcc_state *state = seq->private; + int family = (uintptr_t)(PDE_DATA(file_inode(seq->file))); - state->family = family; - return 0; + return __vcc_walk(&state->sk, family, &state->bucket, l) ? + state : NULL; } static void *vcc_seq_start(struct seq_file *seq, loff_t *pos) @@ -133,7 +122,7 @@ static void *vcc_seq_start(struct seq_file *seq, loff_t *pos) read_lock(&vcc_sklist_lock); state->sk = SEQ_START_TOKEN; - return left ? vcc_walk(state, left) : SEQ_START_TOKEN; + return left ? vcc_walk(seq, left) : SEQ_START_TOKEN; } static void vcc_seq_stop(struct seq_file *seq, void *v) @@ -144,9 +133,7 @@ static void vcc_seq_stop(struct seq_file *seq, void *v) static void *vcc_seq_next(struct seq_file *seq, void *v, loff_t *pos) { - struct vcc_state *state = seq->private; - - v = vcc_walk(state, 1); + v = vcc_walk(seq, 1); *pos += !!PTR_ERR(v); return v; } @@ -280,18 +267,6 @@ static const struct seq_operations pvc_seq_ops = { .show = pvc_seq_show, }; -static int pvc_seq_open(struct inode *inode, struct file *file) -{ - return __vcc_seq_open(inode, file, PF_ATMPVC, &pvc_seq_ops); -} - -static const struct file_operations pvc_seq_fops = { - .open = pvc_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_private, -}; - static int vcc_seq_show(struct seq_file *seq, void *v) { if (v == SEQ_START_TOKEN) { @@ -314,18 +289,6 @@ static const struct seq_operations vcc_seq_ops = { .show = vcc_seq_show, }; -static int vcc_seq_open(struct inode *inode, struct file *file) -{ - return __vcc_seq_open(inode, file, 0, &vcc_seq_ops); -} - -static const struct file_operations vcc_seq_fops = { - .open = vcc_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_private, -}; - static int svc_seq_show(struct seq_file *seq, void *v) { static const char atm_svc_banner[] = @@ -349,18 +312,6 @@ static const struct seq_operations svc_seq_ops = { .show = svc_seq_show, }; -static int svc_seq_open(struct inode *inode, struct file *file) -{ - return __vcc_seq_open(inode, file, PF_ATMSVC, &svc_seq_ops); -} - -static const struct file_operations svc_seq_fops = { - .open = svc_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_private, -}; - static ssize_t proc_dev_atm_read(struct file *file, char __user *buf, size_t count, loff_t *pos) { @@ -434,9 +385,12 @@ int __init atm_proc_init(void) if (!atm_proc_root) return -ENOMEM; proc_create_seq("devices", 0444, atm_proc_root, &atm_dev_seq_ops); - proc_create("pvc", 0444, atm_proc_root, &pvc_seq_fops); - proc_create("svc", 0444, atm_proc_root, &svc_seq_fops); - proc_create("vc", 0444, atm_proc_root, &vcc_seq_fops); + proc_create_seq_private("pvc", 0444, atm_proc_root, &pvc_seq_ops, + sizeof(struct vcc_state), (void *)(uintptr_t)PF_ATMPVC); + proc_create_seq_private("svc", 0444, atm_proc_root, &svc_seq_ops, + sizeof(struct vcc_state), (void *)(uintptr_t)PF_ATMSVC); + proc_create_seq_private("vc", 0444, atm_proc_root, &vcc_seq_ops, + sizeof(struct vcc_state), NULL); return 0; } -- 2.17.0