pipe: change /proc/sys/fs/pipe-max-pages to byte sized interface

This changes the interface to be based on bytes instead. The API
matches that of F_SETPIPE_SZ in that it rounds up the passed in
size so that the resulting page array is a power-of-2 in size.

The proc file is renamed to /proc/sys/fs/pipe-max-size to
reflect this change.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 997080f00e0b..d24f761f4876 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1471,12 +1471,12 @@ static struct ctl_table fs_table[] = {
         },
 #endif
         {
-                .procname       = "pipe-max-pages",
-                .data           = &pipe_max_pages,
+                .procname       = "pipe-max-size",
+                .data           = &pipe_max_size,
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec_minmax,
-                .extra1         = &two,
+                .proc_handler   = &pipe_proc_fn,
+                .extra1         = &pipe_min_size,
         },
 /*
  * NOTE: do not add new entries to this table unless you have read