LU-9008 pfl: dynamic layout modification with write/truncate

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

diff --git a/lustre/include/lustre/lustre_idl.h b/lustre/include/lustre/lustre_idl.h
index d3f0f75..df22acd 100644 (file)
--- a/lustre/include/lustre/lustre_idl.h
+++ b/lustre/include/lustre/lustre_idl.h
@@ -3119,22 +3119,22 @@ struct getparent {
 } __attribute__((packed));
 
 enum {
-        LAYOUT_INTENT_ACCESS    = 0,
-        LAYOUT_INTENT_READ      = 1,
-        LAYOUT_INTENT_WRITE     = 2,
-        LAYOUT_INTENT_GLIMPSE   = 3,
-        LAYOUT_INTENT_TRUNC     = 4,
-        LAYOUT_INTENT_RELEASE   = 5,
-        LAYOUT_INTENT_RESTORE   = 6
+       LAYOUT_INTENT_ACCESS    = 0,    /** generic access */
+       LAYOUT_INTENT_READ      = 1,    /** not used */
+       LAYOUT_INTENT_WRITE     = 2,    /** write file, for comp layout */
+       LAYOUT_INTENT_GLIMPSE   = 3,    /** not used */
+       LAYOUT_INTENT_TRUNC     = 4,    /** truncate file, for comp layout */
+       LAYOUT_INTENT_RELEASE   = 5,    /** reserved for HSM release */
+       LAYOUT_INTENT_RESTORE   = 6,    /** reserved for HSM restore */
 };
 
 /* enqueue layout lock with intent */
 struct layout_intent {
-       __u32 li_opc; /* intent operation for enqueue, read, write etc */
+       __u32 li_opc;   /* intent operation for enqueue, read, write etc */
        __u32 li_flags;
        __u64 li_start;
        __u64 li_end;
-};
+} __attribute__((packed));
 
 /**
  * On the wire version of hsm_progress structure.