[PATCH 2/3] mm: do_mmap_pgoff: cleanup the usage of file_inode()

[Oleg Nesterov <oleg@redhat.com>]

Simple cleanup. Move "struct inode *inode" variable into "if (file)"
block to simplify the code and avoid the unnecessary check.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
 mm/mmap.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index 6b69352..759dce7 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1202,7 +1202,6 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 			unsigned long *populate)
 {
 	struct mm_struct * mm = current->mm;
-	struct inode *inode;
 	vm_flags_t vm_flags;
 
 	*populate = 0;
@@ -1265,9 +1264,9 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 			return -EAGAIN;
 	}
 
-	inode = file ? file_inode(file) : NULL;
-
 	if (file) {
+		struct inode *inode = file_inode(file);
+
 		switch (flags & MAP_TYPE) {
 		case MAP_SHARED:
 			if ((prot&PROT_WRITE) && !(file->f_mode&FMODE_WRITE))
-- 
1.5.5.1