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Diffstat (limited to 'mm/swapfile.c')
-rw-r--r--mm/swapfile.c29
1 files changed, 8 insertions, 21 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c
index ff8dc1a18cb4..1b8c33907242 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1681,19 +1681,14 @@ out:
1681} 1681}
1682 1682
1683#ifdef CONFIG_PROC_FS 1683#ifdef CONFIG_PROC_FS
1684struct proc_swaps {
1685 struct seq_file seq;
1686 int event;
1687};
1688
1689static unsigned swaps_poll(struct file *file, poll_table *wait) 1684static unsigned swaps_poll(struct file *file, poll_table *wait)
1690{ 1685{
1691 struct proc_swaps *s = file->private_data; 1686 struct seq_file *seq = file->private_data;
1692 1687
1693 poll_wait(file, &proc_poll_wait, wait); 1688 poll_wait(file, &proc_poll_wait, wait);
1694 1689
1695 if (s->event != atomic_read(&proc_poll_event)) { 1690 if (seq->poll_event != atomic_read(&proc_poll_event)) {
1696 s->event = atomic_read(&proc_poll_event); 1691 seq->poll_event = atomic_read(&proc_poll_event);
1697 return POLLIN | POLLRDNORM | POLLERR | POLLPRI; 1692 return POLLIN | POLLRDNORM | POLLERR | POLLPRI;
1698 } 1693 }
1699 1694
@@ -1783,24 +1778,16 @@ static const struct seq_operations swaps_op = {
1783 1778
1784static int swaps_open(struct inode *inode, struct file *file) 1779static int swaps_open(struct inode *inode, struct file *file)
1785{ 1780{
1786 struct proc_swaps *s; 1781 struct seq_file *seq;
1787 int ret; 1782 int ret;
1788 1783
1789 s = kmalloc(sizeof(struct proc_swaps), GFP_KERNEL);
1790 if (!s)
1791 return -ENOMEM;
1792
1793 file->private_data = s;
1794
1795 ret = seq_open(file, &swaps_op); 1784 ret = seq_open(file, &swaps_op);
1796 if (ret) { 1785 if (ret)
1797 kfree(s);
1798 return ret; 1786 return ret;
1799 }
1800 1787
1801 s->seq.private = s; 1788 seq = file->private_data;
1802 s->event = atomic_read(&proc_poll_event); 1789 seq->poll_event = atomic_read(&proc_poll_event);
1803 return ret; 1790 return 0;
1804} 1791}
1805 1792
1806static const struct file_operations proc_swaps_operations = { 1793static const struct file_operations proc_swaps_operations = {