From: Gregoire Pichon <gregoire.pic...@bull.net> The new tag field is used as a virtual index for multiple modifying RPCs management. It is set by the client and allows the target to release in-memory reply data when the tag is reused by a new RPC.
The tag field replaces the unused last_seen field of ptlrpcd_body structure. Additionally, the last_xid field is used to transfer the highest XID for which a reply has been received and does not have an unreplied lower-numbered XID. Signed-off-by: Gregoire Pichon <gregoire.pic...@bull.net> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5319 Reviewed-on: http://review.whamcloud.com/14095 Reviewed-by: Andreas Dilger <andreas.dil...@intel.com> Reviewed-by: Alex Zhuravlev <alexey.zhurav...@intel.com> Signed-off-by: James Simmons <jsimm...@infradead.org> --- .../lustre/lustre/include/lustre/lustre_idl.h | 12 ++++-- drivers/staging/lustre/lustre/include/lustre_net.h | 2 + .../staging/lustre/lustre/ptlrpc/pack_generic.c | 39 +++++++++++++++++++- drivers/staging/lustre/lustre/ptlrpc/wiretest.c | 32 ++++++++++++---- 4 files changed, 72 insertions(+), 13 deletions(-) diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h index b88807f..4f6eeec 100644 --- a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h +++ b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h @@ -1099,8 +1099,10 @@ struct ptlrpc_body_v3 { __u32 pb_version; __u32 pb_opc; __u32 pb_status; - __u64 pb_last_xid; - __u64 pb_last_seen; + __u64 pb_last_xid; /* highest replied XID without lower unreplied XID */ + __u16 pb_tag; /* virtual slot idx for multiple modifying RPCs */ + __u16 pb_padding0; + __u32 pb_padding1; __u64 pb_last_committed; __u64 pb_transno; __u32 pb_flags; @@ -1125,8 +1127,10 @@ struct ptlrpc_body_v2 { __u32 pb_version; __u32 pb_opc; __u32 pb_status; - __u64 pb_last_xid; - __u64 pb_last_seen; + __u64 pb_last_xid; /* highest replied XID without lower unreplied XID */ + __u16 pb_tag; /* virtual slot idx for multiple modifying RPCs */ + __u16 pb_padding0; + __u32 pb_padding1; __u64 pb_last_committed; __u64 pb_transno; __u32 pb_flags; diff --git a/drivers/staging/lustre/lustre/include/lustre_net.h b/drivers/staging/lustre/lustre/include/lustre_net.h index e9aba99..ab80330 100644 --- a/drivers/staging/lustre/lustre/include/lustre_net.h +++ b/drivers/staging/lustre/lustre/include/lustre_net.h @@ -2652,6 +2652,7 @@ struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg); __u32 lustre_msg_get_type(struct lustre_msg *msg); void lustre_msg_add_version(struct lustre_msg *msg, u32 version); __u32 lustre_msg_get_opc(struct lustre_msg *msg); +__u16 lustre_msg_get_tag(struct lustre_msg *msg); __u64 lustre_msg_get_last_committed(struct lustre_msg *msg); __u64 *lustre_msg_get_versions(struct lustre_msg *msg); __u64 lustre_msg_get_transno(struct lustre_msg *msg); @@ -2670,6 +2671,7 @@ void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle); void lustre_msg_set_type(struct lustre_msg *msg, __u32 type); void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc); +void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag); void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions); void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno); void lustre_msg_set_status(struct lustre_msg *msg, __u32 status); diff --git a/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c b/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c index 2dc0b79..3055649 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c +++ b/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c @@ -942,6 +942,25 @@ __u32 lustre_msg_get_opc(struct lustre_msg *msg) } EXPORT_SYMBOL(lustre_msg_get_opc); +__u16 lustre_msg_get_tag(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_tag; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_tag); + __u64 lustre_msg_get_last_committed(struct lustre_msg *msg) { switch (msg->lm_magic) { @@ -1236,6 +1255,22 @@ void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc) } } +void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_tag = tag; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_tag); + void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions) { switch (msg->lm_magic) { @@ -1442,7 +1477,7 @@ void lustre_swab_ptlrpc_body(struct ptlrpc_body *b) __swab32s(&b->pb_opc); __swab32s(&b->pb_status); __swab64s(&b->pb_last_xid); - __swab64s(&b->pb_last_seen); + __swab16s(&b->pb_tag); __swab64s(&b->pb_last_committed); __swab64s(&b->pb_transno); __swab32s(&b->pb_flags); @@ -1456,6 +1491,8 @@ void lustre_swab_ptlrpc_body(struct ptlrpc_body *b) __swab64s(&b->pb_pre_versions[1]); __swab64s(&b->pb_pre_versions[2]); __swab64s(&b->pb_pre_versions[3]); + CLASSERT(offsetof(typeof(*b), pb_padding0) != 0); + CLASSERT(offsetof(typeof(*b), pb_padding1) != 0); CLASSERT(offsetof(typeof(*b), pb_padding) != 0); /* While we need to maintain compatibility between * clients and servers without ptlrpc_body_v2 (< 2.3) diff --git a/drivers/staging/lustre/lustre/ptlrpc/wiretest.c b/drivers/staging/lustre/lustre/ptlrpc/wiretest.c index c299099..d5af8cd 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/wiretest.c +++ b/drivers/staging/lustre/lustre/ptlrpc/wiretest.c @@ -635,10 +635,18 @@ void lustre_assert_wire_constants(void) (long long)(int)offsetof(struct ptlrpc_body_v3, pb_last_xid)); LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_xid) == 8, "found %lld\n", (long long)(int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_xid)); - LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_last_seen) == 32, "found %lld\n", - (long long)(int)offsetof(struct ptlrpc_body_v3, pb_last_seen)); - LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_seen) == 8, "found %lld\n", - (long long)(int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_seen)); + LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_tag) == 32, "found %lld\n", + (long long)(int)offsetof(struct ptlrpc_body_v3, pb_tag)); + LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_tag) == 2, "found %lld\n", + (long long)(int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_tag)); + LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_padding0) == 34, "found %lld\n", + (long long)(int)offsetof(struct ptlrpc_body_v3, pb_padding0)); + LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_padding0) == 2, "found %lld\n", + (long long)(int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_padding0)); + LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_padding1) == 36, "found %lld\n", + (long long)(int)offsetof(struct ptlrpc_body_v3, pb_padding1)); + LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_padding1) == 4, "found %lld\n", + (long long)(int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_padding1)); LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_last_committed) == 40, "found %lld\n", (long long)(int)offsetof(struct ptlrpc_body_v3, pb_last_committed)); LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_committed) == 8, "found %lld\n", @@ -713,10 +721,18 @@ void lustre_assert_wire_constants(void) (int)offsetof(struct ptlrpc_body_v3, pb_last_xid), (int)offsetof(struct ptlrpc_body_v2, pb_last_xid)); LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_xid) == (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_last_xid), "%d != %d\n", (int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_xid), (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_last_xid)); - LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_last_seen) == (int)offsetof(struct ptlrpc_body_v2, pb_last_seen), "%d != %d\n", - (int)offsetof(struct ptlrpc_body_v3, pb_last_seen), (int)offsetof(struct ptlrpc_body_v2, pb_last_seen)); - LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_seen) == (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_last_seen), "%d != %d\n", - (int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_seen), (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_last_seen)); + LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_tag) == (int)offsetof(struct ptlrpc_body_v2, pb_tag), "%d != %d\n", + (int)offsetof(struct ptlrpc_body_v3, pb_tag), (int)offsetof(struct ptlrpc_body_v2, pb_tag)); + LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_tag) == (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_tag), "%d != %d\n", + (int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_tag), (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_tag)); + LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_padding0) == (int)offsetof(struct ptlrpc_body_v2, pb_padding0), "%d != %d\n", + (int)offsetof(struct ptlrpc_body_v3, pb_padding0), (int)offsetof(struct ptlrpc_body_v2, pb_padding0)); + LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_padding0) == (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_padding0), "%d != %d\n", + (int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_padding0), (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_padding0)); + LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_padding1) == (int)offsetof(struct ptlrpc_body_v2, pb_padding1), "%d != %d\n", + (int)offsetof(struct ptlrpc_body_v3, pb_padding1), (int)offsetof(struct ptlrpc_body_v2, pb_padding1)); + LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_padding1) == (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_padding1), "%d != %d\n", + (int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_padding1), (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_padding1)); LASSERTF((int)offsetof(struct ptlrpc_body_v3, pb_last_committed) == (int)offsetof(struct ptlrpc_body_v2, pb_last_committed), "%d != %d\n", (int)offsetof(struct ptlrpc_body_v3, pb_last_committed), (int)offsetof(struct ptlrpc_body_v2, pb_last_committed)); LASSERTF((int)sizeof(((struct ptlrpc_body_v3 *)0)->pb_last_committed) == (int)sizeof(((struct ptlrpc_body_v2 *)0)->pb_last_committed), "%d != %d\n", -- 1.7.1 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
