LU-1198 idl: move FID VER to DLM resource name[1]

[fs/lustre-release.git] / lustre / include / lustre / lustre_user.h

diff --git a/lustre/include/lustre/lustre_user.h b/lustre/include/lustre/lustre_user.h
index eab9d3c..be69c18 100644 (file)
--- a/lustre/include/lustre/lustre_user.h
+++ b/lustre/include/lustre/lustre_user.h
@@ -28,9 +28,8 @@
 /*
  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
- */
-/*
- * Copyright (c) 2011 Whamcloud, Inc.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -157,7 +156,7 @@ struct obd_statfs {
 /* see <lustre_lib.h> for ioctl numbers 177-210 */
 
 
-#define LL_STATFS_MDC           1
+#define LL_STATFS_LMV           1
 #define LL_STATFS_LOV           2
 
 #define IOC_MDC_TYPE            'i'
@@ -170,6 +169,9 @@ struct obd_statfs {
 #define LL_IOC_OBD_STATFS       IOC_OBD_STATFS
 #define IOC_MDC_GETSTRIPE       IOC_MDC_GETFILESTRIPE
 
+
+#define MAX_OBD_NAME 128 /* If this changes, a NEW ioctl must be added */
+
 #define O_LOV_DELAY_CREATE 0100000000  /* hopefully this does not conflict */
 
 #define LL_FILE_IGNORE_LOCK     0x00000001
@@ -200,6 +202,7 @@ struct lov_user_ost_data_v1 {     /* per-stripe data structure */
 } __attribute__((packed));
 
 #define lov_user_md lov_user_md_v1
+#define lmm_stripe_offset u.lum_stripe_offset
 struct lov_user_md_v1 {           /* LOV EA user data (host-endian) */
         __u32 lmm_magic;          /* magic number = LOV_USER_MAGIC_V1 */
         __u32 lmm_pattern;        /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
@@ -207,7 +210,12 @@ struct lov_user_md_v1 {           /* LOV EA user data (host-endian) */
         __u64 lmm_object_seq;     /* LOV object seq */
         __u32 lmm_stripe_size;    /* size of stripe in bytes */
         __u16 lmm_stripe_count;   /* num stripes in use for this object */
-        __u16 lmm_stripe_offset;  /* starting stripe offset in lmm_objects */
+        union {
+                __u16 lum_stripe_offset;  /* starting stripe offset in
+                                           * lmm_objects, use when writing */
+                __u16 lum_layout_gen;     /* layout generation number
+                                           * used when reading */
+        } u;
         struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
 } __attribute__((packed,  __may_alias__));
 
@@ -218,7 +226,12 @@ struct lov_user_md_v3 {           /* LOV EA user data (host-endian) */
         __u64 lmm_object_seq;     /* LOV object seq */
         __u32 lmm_stripe_size;    /* size of stripe in bytes */
         __u16 lmm_stripe_count;   /* num stripes in use for this object */
-        __u16 lmm_stripe_offset;  /* starting stripe offset in lmm_objects */
+        union {
+                __u16 lum_stripe_offset;  /* starting stripe offset in
+                                           * lmm_objects, use when writing */
+                __u16 lum_layout_gen;     /* layout generation number
+                                           * used when reading */
+        } u;
         char  lmm_pool_name[LOV_MAXPOOLNAME]; /* pool name */
         struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
 } __attribute__((packed));
@@ -536,9 +549,10 @@ static inline const char *changelog_type2str(int type) {
 #define CLF_HSM_SPARE_H     15
 #define CLF_HSM_LAST        15
 
-#define CLF_GET_BITS(_b, _h, _l) \
- _b &= (0xFFFF << (CLF_HSM_LAST - _h)); \
- _b = _b >> (_l + CLF_HSM_LAST - _h)
+/* Remove bits higher than _h, then extract the value
+ * between _h and _l by shifting lower weigth to bit 0. */
+#define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
+                                   >> (CLF_HSM_LAST - _h + _l))
 
 #define CLF_HSM_SUCCESS      0x00
 #define CLF_HSM_MAXERROR     0x7E
@@ -560,11 +574,7 @@ enum hsm_event {
 
 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
 {
-        enum hsm_event he;
-
-        CLF_GET_BITS(flags, CLF_HSM_EVENT_H, CLF_HSM_EVENT_L);
-        he = flags;
-        return he;
+        return CLF_GET_BITS(flags, CLF_HSM_EVENT_H, CLF_HSM_EVENT_L);
 }
 
 static inline void hsm_set_cl_event(int *flags, enum hsm_event he)
@@ -574,8 +584,7 @@ static inline void hsm_set_cl_event(int *flags, enum hsm_event he)
 
 static inline __u16 hsm_get_cl_flags(int flags)
 {
-        CLF_GET_BITS(flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
-        return flags;
+        return CLF_GET_BITS(flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
 }
 
 static inline void hsm_set_cl_flags(int *flags, int bits)
@@ -585,8 +594,7 @@ static inline void hsm_set_cl_flags(int *flags, int bits)
 
 static inline int hsm_get_cl_error(int flags)
 {
-        CLF_GET_BITS(flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
-        return flags;
+        return CLF_GET_BITS(flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
 }
 
 static inline void hsm_set_cl_error(int *flags, int error)