Merge branch 'linux-linaro-lsk-v3.10' into linux-linaro-lsk-v3.10-android

[firefly-linux-kernel-4.4.55.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 65c2be22b601cc40c17b175e4a88f8980979cc62..4510759c9c1a7cbe0d6bf4c41ac0ee45825b16f8 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -10,6 +10,7 @@
 #include <linux/stat.h>
 #include <linux/cache.h>
 #include <linux/list.h>
+#include <linux/llist.h>
 #include <linux/radix-tree.h>
 #include <linux/rbtree.h>
 #include <linux/init.h>
@@ -761,12 +762,8 @@ static inline int ra_has_index(struct file_ra_state *ra, pgoff_t index)
 #define FILE_MNT_WRITE_RELEASED        2
 
 struct file {
-       /*
-        * fu_list becomes invalid after file_free is called and queued via
-        * fu_rcuhead for RCU freeing
-        */
        union {
-               struct list_head        fu_list;
+               struct llist_node       fu_llist;
                struct rcu_head         fu_rcuhead;
        } f_u;
        struct path             f_path;
@@ -779,9 +776,6 @@ struct file {
         * Must not be taken from IRQ context.
         */
        spinlock_t              f_lock;
-#ifdef CONFIG_SMP
-       int                     f_sb_list_cpu;
-#endif
        atomic_long_t           f_count;
        unsigned int            f_flags;
        fmode_t                 f_mode;
@@ -1257,11 +1251,6 @@ struct super_block {
 
        struct list_head        s_inodes;       /* all inodes */
        struct hlist_bl_head    s_anon;         /* anonymous dentries for (nfs) exporting */
-#ifdef CONFIG_SMP
-       struct list_head __percpu *s_files;
-#else
-       struct list_head        s_files;
-#endif
        struct list_head        s_mounts;       /* list of mounts; _not_ for fs use */
        /* s_dentry_lru, s_nr_dentry_unused protected by dcache.c lru locks */
        struct list_head        s_dentry_lru;   /* unused dentry lru */
@@ -1506,6 +1495,17 @@ int fiemap_check_flags(struct fiemap_extent_info *fieinfo, u32 fs_flags);
  * to have different dirent layouts depending on the binary type.
  */
 typedef int (*filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
+struct dir_context {
+       const filldir_t actor;
+       loff_t pos;
+};
+
+static inline bool dir_emit(struct dir_context *ctx,
+                           const char *name, int namelen,
+                           u64 ino, unsigned type)
+{
+       return ctx->actor(ctx, name, namelen, ctx->pos, ino, type) == 0;
+}
 struct block_device_operations;
 
 /* These macros are for out of kernel modules to test that
@@ -1522,6 +1522,7 @@ struct file_operations {
        ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
        ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
        int (*readdir) (struct file *, void *, filldir_t);
+       int (*iterate) (struct file *, struct dir_context *);
        unsigned int (*poll) (struct file *, struct poll_table_struct *);
        long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
        long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
@@ -2489,11 +2490,13 @@ extern void generic_fillattr(struct inode *, struct kstat *);
 extern int vfs_getattr(struct path *, struct kstat *);
 void __inode_add_bytes(struct inode *inode, loff_t bytes);
 void inode_add_bytes(struct inode *inode, loff_t bytes);
+void __inode_sub_bytes(struct inode *inode, loff_t bytes);
 void inode_sub_bytes(struct inode *inode, loff_t bytes);
 loff_t inode_get_bytes(struct inode *inode);
 void inode_set_bytes(struct inode *inode, loff_t bytes);
 
 extern int vfs_readdir(struct file *, filldir_t, void *);
+extern int iterate_dir(struct file *, struct dir_context *);
 
 extern int vfs_stat(const char __user *, struct kstat *);
 extern int vfs_lstat(const char __user *, struct kstat *);