LU-6179 llite: Implement ladvise lockahead

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

diff --git a/lustre/include/uapi/linux/lustre/lustre_user.h b/lustre/include/uapi/linux/lustre/lustre_user.h
index 17c985a..bb18450 100644 (file)
--- a/lustre/include/uapi/linux/lustre/lustre_user.h
+++ b/lustre/include/uapi/linux/lustre/lustre_user.h
@@ -429,6 +429,7 @@ enum ll_lease_type {
 
 #define LMV_USER_MAGIC    0x0CD30CD0    /*default lmv magic*/
 
+#define LOV_PATTERN_NONE       0x000
 #define LOV_PATTERN_RAID0      0x001
 #define LOV_PATTERN_RAID1      0x002
 #define LOV_PATTERN_FIRST      0x100
@@ -437,6 +438,7 @@ enum ll_lease_type {
 #define LOV_PATTERN_F_MASK     0xffff0000
 #define LOV_PATTERN_F_HOLE     0x40000000 /* there is hole in LOV EA */
 #define LOV_PATTERN_F_RELEASED 0x80000000 /* HSM released file */
+#define LOV_PATTERN_DEFAULT    0xffffffff
 
 static inline bool lov_pattern_supported(__u32 pattern)
 {
@@ -1549,11 +1551,16 @@ enum lu_ladvise_type {
        LU_LADVISE_INVALID      = 0,
        LU_LADVISE_WILLREAD     = 1,
        LU_LADVISE_DONTNEED     = 2,
+       LU_LADVISE_LOCKNOEXPAND = 3,
+       LU_LADVISE_LOCKAHEAD    = 4,
+       LU_LADVISE_MAX
 };
 
 #define LU_LADVISE_NAMES {                                             \
-       [LU_LADVISE_WILLREAD]   = "willread",                           \
-       [LU_LADVISE_DONTNEED]   = "dontneed",                           \
+       [LU_LADVISE_WILLREAD]           = "willread",                   \
+       [LU_LADVISE_DONTNEED]           = "dontneed",                   \
+       [LU_LADVISE_LOCKNOEXPAND]       = "locknoexpand",               \
+       [LU_LADVISE_LOCKAHEAD]          = "lockahead",                  \
 }
 
 /* This is the userspace argument for ladvise.  It is currently the same as
@@ -1571,10 +1578,20 @@ struct llapi_lu_ladvise {
 
 enum ladvise_flag {
        LF_ASYNC        = 0x00000001,
+       LF_UNSET        = 0x00000002,
 };
 
 #define LADVISE_MAGIC 0x1ADF1CE0
-#define LF_MASK LF_ASYNC
+/* Masks of valid flags for each advice */
+#define LF_LOCKNOEXPAND_MASK LF_UNSET
+/* Flags valid for all advices not explicitly specified */
+#define LF_DEFAULT_MASK LF_ASYNC
+/* All flags */
+#define LF_MASK (LF_ASYNC | LF_UNSET)
+
+#define lla_lockahead_mode   lla_value1
+#define lla_peradvice_flags    lla_value2
+#define lla_lockahead_result lla_value3
 
 /* This is the userspace argument for ladvise, corresponds to ladvise_hdr which
  * is used on the wire.  It is defined separately as we may need info which is
@@ -1617,5 +1634,23 @@ struct sk_hmac_type {
        size_t   sht_bytes;
 };
 
+enum lock_mode_user {
+       MODE_READ_USER = 1,
+       MODE_WRITE_USER,
+       MODE_MAX_USER,
+};
+
+#define LOCK_MODE_NAMES { \
+       [MODE_READ_USER]  = "READ",\
+       [MODE_WRITE_USER] = "WRITE"\
+}
+
+enum lockahead_results {
+       LLA_RESULT_SENT = 0,
+       LLA_RESULT_DIFFERENT,
+       LLA_RESULT_SAME,
+};
+
 /** @} lustreuser */
+
 #endif /* _LUSTRE_USER_H */