[PATCH] mm/shmem.c: make shmem_mapping() inline

[Hui Su]

inline the shmem_mapping(), and use shmem_mapping()
instead of 'inode->i_mapping->a_ops == &shmem_aops'
in shmem_evict_inode().

Signed-off-by: Hui Su <sh_...@163.com>
---
 include/linux/shmem_fs.h | 2 +-
 mm/shmem.c               | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index a5a5d1d4d7b1..154a16fe7fd5 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -67,7 +67,7 @@ extern unsigned long shmem_get_unmapped_area(struct file *, 
unsigned long addr,
                unsigned long len, unsigned long pgoff, unsigned long flags);
 extern int shmem_lock(struct file *file, int lock, struct user_struct *user);
 #ifdef CONFIG_SHMEM
-extern bool shmem_mapping(struct address_space *mapping);
+extern inline bool shmem_mapping(struct address_space *mapping);
 #else
 static inline bool shmem_mapping(struct address_space *mapping)
 {
diff --git a/mm/shmem.c b/mm/shmem.c
index 537c137698f8..7395d8e8226a 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1152,7 +1152,7 @@ static void shmem_evict_inode(struct inode *inode)
        struct shmem_inode_info *info = SHMEM_I(inode);
        struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
 
-       if (inode->i_mapping->a_ops == &shmem_aops) {
+       if (shmem_mapping(inode->i_mapping)) {
                shmem_unacct_size(info->flags, inode->i_size);
                inode->i_size = 0;
                shmem_truncate_range(inode, 0, (loff_t)-1);
@@ -2352,7 +2352,7 @@ static struct inode *shmem_get_inode(struct super_block 
*sb, const struct inode
        return inode;
 }
 
-bool shmem_mapping(struct address_space *mapping)
+inline bool shmem_mapping(struct address_space *mapping)
 {
        return mapping->a_ops == &shmem_aops;
 }
-- 
2.29.0