The default size of the shmem filesystem is currently set to 50% of
memory using a magic token. This change makes it a define value, so
that it is clearly denoted as a global value, and to make it easier to
track down and identify.
No behavior is changed, and no additional processing is created.
Signed-off-by: Gary B. Genett <me@xxxxxxxxxxxxxxx>
---
mm/shmem.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index cd570cc79c76..bc758cfb4cb6 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -95,6 +95,9 @@ static struct vfsmount *shm_mnt;
/* Symlink up to this size is kmalloc'ed instead of using a swappable page */
#define SHORT_SYMLINK_LEN 128
+/* Default size of shmem filesystem */
+#define SHMEM_SIZE_DEFAULT (totalram_pages() / 2)
+
/*
* shmem_fallocate communicates with shmem_fault or shmem_writepage via
* inode->i_private (with i_mutex making sure that it has only one user at
@@ -125,14 +128,14 @@ struct shmem_options {
#ifdef CONFIG_TMPFS
static unsigned long shmem_default_max_blocks(void)
{
- return totalram_pages() / 2;
+ return SHMEM_SIZE_DEFAULT;
}
static unsigned long shmem_default_max_inodes(void)
{
unsigned long nr_pages = totalram_pages();
- return min(nr_pages - totalhigh_pages(), nr_pages / 2);
+ return min(nr_pages - totalhigh_pages(), SHMEM_SIZE_DEFAULT);
}
#endif
--
2.15.2
