1 files changed, 29 insertions, 9 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index cdf9495df204..b5b979247863 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -23,7 +23,8 @@
 
 /* Fixed constants first: */
 #undef NR_OPEN
-#define INR_OPEN 1024           /* Initial setting for nfile rlimits */
+#define INR_OPEN_CUR 1024       /* Initial setting for nfile rlimits */
+#define INR_OPEN_MAX 4096       /* Hard limit for nfile rlimits */
 
 #define BLOCK_SIZE_BITS 10
 #define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
@@ -207,6 +208,7 @@ struct inodes_stat_t {
 #define MS_KERNMOUNT    (1<<22) /* this is a kern_mount call */
 #define MS_I_VERSION    (1<<23) /* Update inode I_version field */
 #define MS_STRICTATIME  (1<<24) /* Always perform atime updates */
+#define MS_NOSEC        (1<<28)
 #define MS_BORN         (1<<29)
 #define MS_ACTIVE       (1<<30)
 #define MS_NOUSER       (1<<31)
@@ -236,6 +238,7 @@ struct inodes_stat_t {
 #define S_PRIVATE       512     /* Inode is fs-internal */
 #define S_IMA           1024    /* Inode has an associated IMA struct */
 #define S_AUTOMOUNT     2048    /* Automount/referral quasi-directory */
+#define S_NOSEC         4096    /* no suid or xattr security attributes */
 
 /*
  * Note that nosuid etc flags are inode-specific: setting some file-system
@@ -272,6 +275,7 @@ struct inodes_stat_t {
 #define IS_PRIVATE(inode)       ((inode)->i_flags & S_PRIVATE)
 #define IS_IMA(inode)           ((inode)->i_flags & S_IMA)
 #define IS_AUTOMOUNT(inode)     ((inode)->i_flags & S_AUTOMOUNT)
+#define IS_NOSEC(inode)         ((inode)->i_flags & S_NOSEC)
 
 /* the read-only stuff doesn't really belong here, but any other place is
    probably as bad and I don't want to create yet another include file. */
@@ -634,8 +638,8 @@ struct address_space {
         unsigned int            i_mmap_writable;/* count VM_SHARED mappings */
         struct prio_tree_root   i_mmap;         /* tree of private and shared mappings */
         struct list_head        i_mmap_nonlinear;/*list VM_NONLINEAR mappings */
-        spinlock_t              i_mmap_lock;    /* protect tree, count, list */
-        unsigned int            truncate_count; /* Cover race condition with truncate */
+        struct mutex            i_mmap_mutex;   /* protect tree, count, list */
+        /* Protected by tree_lock together with the radix tree */
         unsigned long           nrpages;        /* number of total pages */
         pgoff_t                 writeback_index;/* writeback starts here */
         const struct address_space_operations *a_ops;   /* methods */
@@ -644,7 +648,6 @@ struct address_space {
         spinlock_t              private_lock;   /* for use by the address_space */
         struct list_head        private_list;   /* ditto */
         struct address_space    *assoc_mapping; /* ditto */
-        struct mutex            unmap_mutex;    /* to protect unmapping */
 } __attribute__((aligned(sizeof(long))));
         /*
          * On most architectures that alignment is already the case; but
@@ -742,9 +745,13 @@ struct inode {
 
         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;
 
-        unsigned long           i_state;
+
         unsigned long           dirtied_when;   /* jiffies of first dirtying */
 
         struct hlist_node       i_hash;
@@ -796,9 +803,6 @@ struct inode {
         atomic_t                i_readcount; /* struct files open RO */
 #endif
         atomic_t                i_writecount;
-#ifdef CONFIG_SECURITY
-        void                    *i_security;
-#endif
 #ifdef CONFIG_FS_POSIX_ACL
         struct posix_acl        *i_acl;
         struct posix_acl        *i_default_acl;
@@ -1429,6 +1433,11 @@ struct super_block {
          */
         char __rcu *s_options;
         const struct dentry_operations *s_d_op; /* default d_op for dentries */
+
+        /*
+         * Saved pool identifier for cleancache (-1 means none)
+         */
+        int cleancache_poolid;
 };
 
 extern struct timespec current_fs_time(struct super_block *sb);
@@ -1614,7 +1623,7 @@ struct super_operations {
         struct inode *(*alloc_inode)(struct super_block *sb);
         void (*destroy_inode)(struct inode *);
 
-        void (*dirty_inode) (struct inode *);
+        void (*dirty_inode) (struct inode *, int flags);
         int (*write_inode) (struct inode *, struct writeback_control *wbc);
         int (*drop_inode) (struct inode *);
         void (*evict_inode) (struct inode *);
@@ -2578,5 +2587,16 @@ int __init get_filesystem_list(char *buf);
 #define OPEN_FMODE(flag) ((__force fmode_t)(((flag + 1) & O_ACCMODE) | \
                                             (flag & __FMODE_NONOTIFY)))
 
+static inline int is_sxid(mode_t mode)
+{
+        return (mode & S_ISUID) || ((mode & S_ISGID) && (mode & S_IXGRP));
+}
+
+static inline void inode_has_no_xattr(struct inode *inode)
+{
+        if (!is_sxid(inode->i_mode) && (inode->i_sb->s_flags & MS_NOSEC))
+                inode->i_flags |= S_NOSEC;
+}
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_FS_H */