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mm: reuse DEFINE_SHOW_ATTRIBUTE() macro

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...instead of open coding file operations followed by custom ->open()
callbacks per each attribute.

[[email protected]: add tags, fix compilation issue]
  Link: http://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Andy Shevchenko <[email protected]>
Reviewed-by: Matthew Wilcox <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Reviewed-by: Sergey Senozhatsky <[email protected]>
Acked-by: Christoph Lameter <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Dennis Zhou <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Nitin Gupta <[email protected]>
Cc: Sergey Senozhatsky <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andy Shevchenko 2018-04-05 16:23:16 -07:00 • committed by Linus Torvalds
commit 5ad3509364
4 changed files with 5 additions and 49 deletions
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13
mm/backing-dev.c
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@ -100,18 +100,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
return 0;
}
static int bdi_debug_stats_open(struct inode *inode, struct file *file)
{
return single_open(file, bdi_debug_stats_show, inode->i_private);
}
static const struct file_operations bdi_debug_stats_fops = {
.open = bdi_debug_stats_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
DEFINE_SHOW_ATTRIBUTE(bdi_debug_stats);
static int bdi_debug_register(struct backing_dev_info *bdi, const char *name)
{