Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[pandora-kernel.git] / fs / ceph / super.h

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index a23eed5..01bf189 100644 (file)
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -36,7 +36,8 @@
 #define ceph_test_mount_opt(fsc, opt) \
        (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
 
-#define CEPH_RSIZE_DEFAULT             (512*1024) /* readahead */
+#define CEPH_RSIZE_DEFAULT             0           /* max read size */
+#define CEPH_RASIZE_DEFAULT            (8192*1024) /* readahead */
 #define CEPH_MAX_READDIR_DEFAULT        1024
 #define CEPH_MAX_READDIR_BYTES_DEFAULT  (512*1024)
 #define CEPH_SNAPDIRNAME_DEFAULT        ".snap"
@@ -45,8 +46,9 @@ struct ceph_mount_options {
        int flags;
        int sb_flags;
 
-       int wsize;
-       int rsize;            /* max readahead */
+       int wsize;            /* max write size */
+       int rsize;            /* max read size */
+       int rasize;           /* max readahead */
        int congestion_kb;    /* max writeback in flight */
        int caps_wanted_delay_min, caps_wanted_delay_max;
        int cap_release_safety;
@@ -201,6 +203,7 @@ struct ceph_inode_xattr {
  * Ceph dentry state
  */
 struct ceph_dentry_info {
+       unsigned long flags;
        struct ceph_mds_session *lease_session;
        u32 lease_gen, lease_shared_gen;
        u32 lease_seq;
@@ -211,6 +214,18 @@ struct ceph_dentry_info {
        u64 offset;
 };
 
+/*
+ * dentry flags
+ *
+ * The locking for D_COMPLETE is a bit odd:
+ *  - we can clear it at almost any time (see ceph_d_prune)
+ *  - it is only meaningful if:
+ *    - we hold dir inode i_lock
+ *    - we hold dir FILE_SHARED caps
+ *    - the dentry D_COMPLETE is set
+ */
+#define CEPH_D_COMPLETE 1  /* if set, d_u.d_subdirs is complete directory */
+
 struct ceph_inode_xattrs_info {
        /*
         * (still encoded) xattr blob. we avoid the overhead of parsing
@@ -249,7 +264,7 @@ struct ceph_inode_info {
        struct timespec i_rctime;
        u64 i_rbytes, i_rfiles, i_rsubdirs;
        u64 i_files, i_subdirs;
-       u64 i_max_offset;  /* largest readdir offset, set with I_COMPLETE */
+       u64 i_max_offset;  /* largest readdir offset, set with D_COMPLETE */
 
        struct rb_root i_fragtree;
        struct mutex i_fragtree_mutex;
@@ -344,9 +359,10 @@ static inline struct ceph_vino ceph_vino(struct inode *inode)
  * x86_64+ino32  64                     32
  * x86_64        64                     64
  */
-static inline u32 ceph_ino_to_ino32(ino_t ino)
+static inline u32 ceph_ino_to_ino32(__u64 vino)
 {
-       ino ^= ino >> (sizeof(ino) * 8 - 32);
+       u32 ino = vino & 0xffffffff;
+       ino ^= vino >> 32;
        if (!ino)
                ino = 1;
        return ino;
@@ -357,11 +373,11 @@ static inline u32 ceph_ino_to_ino32(ino_t ino)
  */
 static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
 {
-       ino_t ino = (ino_t)vino.ino;  /* ^ (vino.snap << 20); */
 #if BITS_PER_LONG == 32
-       ino = ceph_ino_to_ino32(ino);
+       return ceph_ino_to_ino32(vino.ino);
+#else
+       return (ino_t)vino.ino;
 #endif
-       return ino;
 }
 
 /*
@@ -413,7 +429,6 @@ static inline struct inode *ceph_find_inode(struct super_block *sb,
 /*
  * Ceph inode.
  */
-#define CEPH_I_COMPLETE  1  /* we have complete directory cached */
 #define CEPH_I_NODELAY   4  /* do not delay cap release */
 #define CEPH_I_FLUSH     8  /* do not delay flush of dirty metadata */
 #define CEPH_I_NOFLUSH  16  /* do not flush dirty caps */
@@ -470,6 +485,13 @@ static inline loff_t ceph_make_fpos(unsigned frag, unsigned off)
        return ((loff_t)frag << 32) | (loff_t)off;
 }
 
+/*
+ * set/clear directory D_COMPLETE flag
+ */
+void ceph_dir_set_complete(struct inode *inode);
+void ceph_dir_clear_complete(struct inode *inode);
+bool ceph_dir_test_complete(struct inode *inode);
+
 /*
  * caps helpers
  */