b=19902

[fs/lustre-release.git] / lustre / osd / osd_internal.h

diff --git a/lustre/osd/osd_internal.h b/lustre/osd/osd_internal.h
index 8fd25f2..0b1ca69 100644 (file)
--- a/lustre/osd/osd_internal.h
+++ b/lustre/osd/osd_internal.h
@@ -53,7 +53,6 @@
 #include <linux/ldiskfs_fs.h>
 /* struct dentry */
 #include <linux/dcache.h>
-#include <linux/lustre_iam.h>
 /* struct dirent64 */
 #include <linux/dirent.h>
 
@@ -65,6 +64,7 @@
 
 #include <dt_object.h>
 #include "osd_oi.h"
+#include "osd_iam.h"
 
 struct inode;
 
@@ -129,6 +129,26 @@ struct osd_device {
 };
 
 /**
+ * Storage representation for fids.
+ *
+ * Variable size, first byte contains the length of the whole record.
+ */
+struct osd_fid_pack {
+        unsigned char fp_len;
+        char fp_area[sizeof(struct lu_fid)];
+};
+
+struct osd_it_ea_dirent {
+        __u64           oied_ino;
+        __u64           oied_off;
+        unsigned short  oied_namelen;
+        unsigned int    oied_type;
+        char            oied_name[0];
+} __attribute__((packed));
+
+#define OSD_IT_EA_BUFSIZE       CFS_PAGE_SIZE
+
+/**
  * This is iterator's in-memory data structure in interoperability
  * mode (i.e. iterator over ldiskfs style directory)
  */
@@ -136,15 +156,14 @@ struct osd_it_ea {
         struct osd_object   *oie_obj;
         /** used in ldiskfs iterator, to stored file pointer */
         struct file          oie_file;
-        /** used in ldiskfs iterator, to store directory entry */
-        struct dirent64      oie_dirent64;
-        /** current file position */
-        __u64               oie_curr_pos;
-        /** next file position */
-        __u64               oie_next_pos;
-        /** namelen of the file */
-        __u8                oie_namelen;
-
+        /** how many entries have been read-cached from storage */
+        int                  oie_rd_dirent;
+        /** current entry is being iterated by caller */
+        int                  oie_it_dirent;
+        /** current processing entry */
+        struct osd_it_ea_dirent *oie_dirent;
+        /** buffer to hold entries, size == OSD_IT_EA_BUFSIZE */
+        void                *oie_buf;
 };
 
 /**
@@ -173,10 +192,8 @@ struct osd_thread_info {
          * XXX temporary: for ->i_op calls.
          */
         struct txn_param       oti_txn;
-        /*
-         * XXX temporary: fake dentry used by xattr calls.
-         */
         struct timespec        oti_time;
+        struct timespec        oti_time2;
         /*
          * XXX temporary: fake struct file for osd_object_sync
          */
@@ -187,8 +204,6 @@ struct osd_thread_info {
         struct lustre_capa_key oti_capa_key;
         struct lustre_capa     oti_capa;
 
-        struct lu_fid_pack     oti_pack;
-
         /**
          * following ipd and it structures are used for osd_index_iam_lookup()
          * these are defined separately as we might do index operation
@@ -203,6 +218,8 @@ struct osd_thread_info {
                 struct osd_it_ea       oti_it_ea;
         };
 
+        /** pre-allocated buffer used by oti_it_ea, size OSD_IT_EA_BUFSIZE */
+        void                  *oti_it_ea_buf;
 
         /** IAM iterator for index operation. */
         struct iam_iterator    oti_idx_it;
@@ -229,6 +246,9 @@ struct osd_thread_info {
 #ifdef HAVE_QUOTA_SUPPORT
         struct osd_ctxt        oti_ctxt;
 #endif
+        struct lu_env          oti_obj_delete_tx_env;
+#define OSD_FID_REC_SZ 32
+        char                   oti_fid_packed[OSD_FID_REC_SZ];
 };
 
 #ifdef LPROCFS
@@ -243,5 +263,31 @@ void osd_lprocfs_time_end(const struct lu_env *env,
 int osd_statfs(const struct lu_env *env, struct dt_device *dev,
                struct kstatfs *sfs);
 
+/*
+ * Invariants, assertions.
+ */
+
+/*
+ * XXX: do not enable this, until invariant checking code is made thread safe
+ * in the face of pdirops locking.
+ */
+#define OSD_INVARIANT_CHECKS (0)
+
+#if OSD_INVARIANT_CHECKS
+static inline int osd_invariant(const struct osd_object *obj)
+{
+        return
+                obj != NULL &&
+                ergo(obj->oo_inode != NULL,
+                     obj->oo_inode->i_sb == osd_sb(osd_obj2dev(obj)) &&
+                     atomic_read(&obj->oo_inode->i_count) > 0) &&
+                ergo(obj->oo_dir != NULL &&
+                     obj->oo_dir->od_conationer.ic_object != NULL,
+                     obj->oo_dir->od_conationer.ic_object == obj->oo_inode);
+}
+#else
+#define osd_invariant(obj) (1)
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* _OSD_INTERNAL_H */