Merge branch 'for-linus' of git://neil.brown.name/md

[firefly-linux-kernel-4.4.55.git] / drivers / md / md.c

diff --git a/drivers/md/md.c b/drivers/md/md.c
index d97a6253479809bc99dba19425530caa8620b49b..8e221a20f5d98b362e8f49660454add87a5e3b38 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6616,16 +6616,11 @@ static void md_seq_stop(struct seq_file *seq, void *v)
                mddev_put(mddev);
 }
 
-struct mdstat_info {
-       int event;
-};
-
 static int md_seq_show(struct seq_file *seq, void *v)
 {
        mddev_t *mddev = v;
        sector_t sectors;
        mdk_rdev_t *rdev;
-       struct mdstat_info *mi = seq->private;
        struct bitmap *bitmap;
 
        if (v == (void*)1) {
@@ -6637,7 +6632,7 @@ static int md_seq_show(struct seq_file *seq, void *v)
 
                spin_unlock(&pers_lock);
                seq_printf(seq, "\n");
-               mi->event = atomic_read(&md_event_count);
+               seq->poll_event = atomic_read(&md_event_count);
                return 0;
        }
        if (v == (void*)2) {
@@ -6749,26 +6744,21 @@ static const struct seq_operations md_seq_ops = {
 
 static int md_seq_open(struct inode *inode, struct file *file)
 {
+       struct seq_file *seq;
        int error;
-       struct mdstat_info *mi = kmalloc(sizeof(*mi), GFP_KERNEL);
-       if (mi == NULL)
-               return -ENOMEM;
 
        error = seq_open(file, &md_seq_ops);
        if (error)
-               kfree(mi);
-       else {
-               struct seq_file *p = file->private_data;
-               p->private = mi;
-               mi->event = atomic_read(&md_event_count);
-       }
+               return error;
+
+       seq = file->private_data;
+       seq->poll_event = atomic_read(&md_event_count);
        return error;
 }
 
 static unsigned int mdstat_poll(struct file *filp, poll_table *wait)
 {
-       struct seq_file *m = filp->private_data;
-       struct mdstat_info *mi = m->private;
+       struct seq_file *seq = filp->private_data;
        int mask;
 
        poll_wait(filp, &md_event_waiters, wait);
@@ -6776,7 +6766,7 @@ static unsigned int mdstat_poll(struct file *filp, poll_table *wait)
        /* always allow read */
        mask = POLLIN | POLLRDNORM;
 
-       if (mi->event != atomic_read(&md_event_count))
+       if (seq->poll_event != atomic_read(&md_event_count))
                mask |= POLLERR | POLLPRI;
        return mask;
 }