1 files changed, 37 insertions, 22 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 786b3b1113cf..178cdb4f1d4a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -738,22 +738,54 @@ static inline int mapping_writably_mapped(struct address_space *mapping)
 struct posix_acl;
 #define ACL_NOT_CACHED ((void *)(-1))
 
+#define IOP_FASTPERM    0x0001
+#define IOP_LOOKUP      0x0002
+#define IOP_NOFOLLOW    0x0004
+
+/*
+ * Keep mostly read-only and often accessed (especially for
+ * the RCU path lookup and 'stat' data) fields at the beginning
+ * of the 'struct inode'
+ */
 struct inode {
-        /* RCU path lookup touches following: */
         umode_t                 i_mode;
+        unsigned short          i_opflags;
         uid_t                   i_uid;
         gid_t                   i_gid;
+        unsigned int            i_flags;
+
+#ifdef CONFIG_FS_POSIX_ACL
+        struct posix_acl        *i_acl;
+        struct posix_acl        *i_default_acl;
+#endif
+
         const struct inode_operations   *i_op;
         struct super_block      *i_sb;
+        struct address_space    *i_mapping;
 
-        spinlock_t              i_lock; /* i_blocks, i_bytes, maybe i_size */
-        unsigned int            i_flags;
-        unsigned long           i_state;
 #ifdef CONFIG_SECURITY
         void                    *i_security;
 #endif
-        struct mutex            i_mutex;
 
+        /* Stat data, not accessed from path walking */
+        unsigned long           i_ino;
+        unsigned int            i_nlink;
+        dev_t                   i_rdev;
+        loff_t                  i_size;
+        struct timespec         i_atime;
+        struct timespec         i_mtime;
+        struct timespec         i_ctime;
+        unsigned int            i_blkbits;
+        blkcnt_t                i_blocks;
+
+#ifdef __NEED_I_SIZE_ORDERED
+        seqcount_t              i_size_seqcount;
+#endif
+
+        /* Misc */
+        unsigned long           i_state;
+        spinlock_t              i_lock; /* i_blocks, i_bytes, maybe i_size */
+        struct mutex            i_mutex;
 
         unsigned long           dirtied_when;   /* jiffies of first dirtying */
 
@@ -765,25 +797,12 @@ struct inode {
                 struct list_head        i_dentry;
                 struct rcu_head         i_rcu;
         };
-        unsigned long           i_ino;
         atomic_t                i_count;
-        unsigned int            i_nlink;
-        dev_t                   i_rdev;
-        unsigned int            i_blkbits;
         u64                     i_version;
-        loff_t                  i_size;
-#ifdef __NEED_I_SIZE_ORDERED
-        seqcount_t              i_size_seqcount;
-#endif
-        struct timespec         i_atime;
-        struct timespec         i_mtime;
-        struct timespec         i_ctime;
-        blkcnt_t                i_blocks;
         unsigned short          i_bytes;
         atomic_t                i_dio_count;
         const struct file_operations    *i_fop; /* former ->i_op->default_file_ops */
         struct file_lock        *i_flock;
-        struct address_space    *i_mapping;
         struct address_space    i_data;
 #ifdef CONFIG_QUOTA
         struct dquot            *i_dquot[MAXQUOTAS];
@@ -806,10 +825,6 @@ struct inode {
         atomic_t                i_readcount; /* struct files open RO */
 #endif
         atomic_t                i_writecount;
-#ifdef CONFIG_FS_POSIX_ACL
-        struct posix_acl        *i_acl;
-        struct posix_acl        *i_default_acl;
-#endif
         void                    *i_private; /* fs or device private pointer */
 };