Merge branch 'akpm-incoming-1'

[pandora-kernel.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0a81b87..4658777 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -34,9 +34,9 @@
 
 /* And dynamically-tunable limits and defaults: */
 struct files_stat_struct {
-       int nr_files;           /* read only */
-       int nr_free_files;      /* read only */
-       int max_files;          /* tunable */
+       unsigned long nr_files;         /* read only */
+       unsigned long nr_free_files;    /* read only */
+       unsigned long max_files;                /* tunable */
 };
 
 struct inodes_stat_t {
@@ -135,12 +135,12 @@ struct inodes_stat_t {
  *                     immediately after submission. The write equivalent
  *                     of READ_SYNC.
  * WRITE_ODIRECT_PLUG  Special case write for O_DIRECT only.
- * WRITE_BARRIER       Like WRITE_SYNC, but tells the block layer that all
- *                     previously submitted writes must be safely on storage
- *                     before this one is started. Also guarantees that when
- *                     this write is complete, it itself is also safely on
- *                     storage. Prevents reordering of writes on both sides
- *                     of this IO.
+ * WRITE_FLUSH         Like WRITE_SYNC but with preceding cache flush.
+ * WRITE_FUA           Like WRITE_SYNC but data is guaranteed to be on
+ *                     non-volatile media on completion.
+ * WRITE_FLUSH_FUA     Combination of WRITE_FLUSH and FUA. The IO is preceded
+ *                     by a cache flush and data is guaranteed to be on
+ *                     non-volatile media on completion.
  *
  */
 #define RW_MASK                        REQ_WRITE
@@ -156,16 +156,12 @@ struct inodes_stat_t {
 #define WRITE_SYNC             (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG)
 #define WRITE_ODIRECT_PLUG     (WRITE | REQ_SYNC)
 #define WRITE_META             (WRITE | REQ_META)
-#define WRITE_BARRIER          (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \
-                                REQ_HARDBARRIER)
-
-/*
- * These aren't really reads or writes, they pass down information about
- * parts of device that are now unused by the file system.
- */
-#define DISCARD_NOBARRIER      (WRITE | REQ_DISCARD)
-#define DISCARD_BARRIER                (WRITE | REQ_DISCARD | REQ_HARDBARRIER)
-#define DISCARD_SECURE         (DISCARD_NOBARRIER | REQ_SECURE)
+#define WRITE_FLUSH            (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \
+                                REQ_FLUSH)
+#define WRITE_FUA              (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \
+                                REQ_FUA)
+#define WRITE_FLUSH_FUA                (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \
+                                REQ_FLUSH | REQ_FUA)
 
 #define SEL_IN         1
 #define SEL_OUT                2
@@ -235,6 +231,7 @@ struct inodes_stat_t {
 #define S_NOCMTIME     128     /* Do not update file c/mtime */
 #define S_SWAPFILE     256     /* Do not truncate: swapon got its bmaps */
 #define S_PRIVATE      512     /* Inode is fs-internal */
+#define S_IMA          1024    /* Inode has an associated IMA struct */
 
 /*
  * Note that nosuid etc flags are inode-specific: setting some file-system
@@ -269,6 +266,7 @@ struct inodes_stat_t {
 #define IS_NOCMTIME(inode)     ((inode)->i_flags & S_NOCMTIME)
 #define IS_SWAPFILE(inode)     ((inode)->i_flags & S_SWAPFILE)
 #define IS_PRIVATE(inode)      ((inode)->i_flags & S_PRIVATE)
+#define IS_IMA(inode)          ((inode)->i_flags & S_IMA)
 
 /* 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. */
@@ -404,7 +402,7 @@ extern void __init inode_init_early(void);
 extern void __init files_init(unsigned long);
 
 extern struct files_stat_struct files_stat;
-extern int get_max_files(void);
+extern unsigned long get_max_files(void);
 extern int sysctl_nr_open;
 extern struct inodes_stat_t inodes_stat;
 extern int leases_enable, lease_break_time;
@@ -776,6 +774,10 @@ struct inode {
 
        unsigned int            i_flags;
 
+#ifdef CONFIG_IMA
+       /* protected by i_lock */
+       unsigned int            i_readcount; /* struct files open RO */
+#endif
        atomic_t                i_writecount;
 #ifdef CONFIG_SECURITY
        void                    *i_security;