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| author | Rob Jones <rob.jones@codethink.co.uk> | 2014-10-09 15:28:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-09 22:25:56 -0400 |
| commit | 703394c1005caeccaaf64945c1b6d6cc3af0cd1d (patch) | |
| tree | c7af9d0884ba876482e5d73b8d2218be1776f5a7 | |
| parent | 1c93923cc264105418e6ead149c76bd88302eff4 (diff) | |
| download | linux-703394c1005caeccaaf64945c1b6d6cc3af0cd1d.tar.bz2 | |
mm/vmalloc.c: use seq_open_private() instead of seq_open()
Using seq_open_private() removes boilerplate code from vmalloc_open().
The resultant code is shorter and easier to follow.
However, please note that seq_open_private() call kzalloc() rather than
kmalloc() which may affect timing due to the memory initialisation
overhead.
Signed-off-by: Rob Jones <rob.jones@codethink.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/vmalloc.c | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 2b0aa5486092..90520af7f186 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2646,21 +2646,11 @@ static const struct seq_operations vmalloc_op = { static int vmalloc_open(struct inode *inode, struct file *file) { - unsigned int *ptr = NULL; - int ret; - - if (IS_ENABLED(CONFIG_NUMA)) { - ptr = kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL); - if (ptr == NULL) - return -ENOMEM; - } - ret = seq_open(file, &vmalloc_op); - if (!ret) { - struct seq_file *m = file->private_data; - m->private = ptr; - } else - kfree(ptr); - return ret; + if (IS_ENABLED(CONFIG_NUMA)) + return seq_open_private(file, &vmalloc_op, + nr_node_ids * sizeof(unsigned int)); + else + return seq_open(file, &vmalloc_op); } static const struct file_operations proc_vmalloc_operations = { |