rds: revert RDS code to 8cbd960 commit to rebase UEK commits

rds: revert RDS code to 8cbd960 commit to rebase UEK commits

reverting net/rds code to following commit:
8cbd960 2009-04-01 RDS: Use spinlock to protect 64b value update on 32b
archs [Andy Grover]

This is common ancestor point for RDS code in Linux kernel repository
and Mellanox OFED-1.5.5 R2 repository.

From this point, we fetch RDS code from Mellanox OFED-1.5.5 repository.

Signed-off-by: Ajaykumar Hotchandani <ajaykumar.hotchandani@oracle.com>
--------------
Revert details:
--------------
Revert "net/rds: RDS-TCP: only initiate reconnect attempt on outgoing TCP socket."
This reverts commit c82ac7e69efe6dbe370d6ba84e2666d7692ef1c2.

Revert "net/rds: RDS-TCP: Always create a new rds_sock for an incoming connection."
This reverts commit f711a6ae062caeee46067b2f2f12ffda319ae73c.

Revert "net/rds: Fix new sparse warning"
This reverts commit e2783717a71e9babfdd7c36c7e35b790d2c01022.

Revert "net/rds: fix unaligned memory access"
This reverts commit c0adf54a10903b59037a4c5fcb933dfeeb7b2624.

Revert "net: Remove iocb argument from sendmsg and recvmsg" for net/rds
This reverts commit 1b784140474e4fc94281a49e96c67d29df0efbde for net/rds.

Revert "RDS: make sure not to loop forever inside rds_send_xmit"
This reverts commit 443be0e5affe3acb6dd81e7402951677e0a0eb35.

Revert "RDS: only use passive connections when addresses match"
This reverts commit 1789b2c077f6d6c82b04cfe49a0fec020dc42488.

Revert "rds: avoid potential stack overflow"
This reverts commit f862e07cf95d5b62a5fc5e981dd7d0dbaf33a501.

Revert "rds: rds_cong_queue_updates needs to defer the congestion update transmission"
This reverts commit 80ad0d4a7a75158f2824d541e4802c88aba4f063.

Revert "rds: Make rds_message_copy_from_user() return 0 on success."
This reverts commit d0a47d32724bf0765b8768086ef1a7a6d074a7a0.

Revert "net: rds: Remove repeated function names from debug output"
This reverts commit 11ac11999bae3c353f86b6e7dd0e43d4a0eada12.

Revert "net: rds: use correct size for max unacked packets and bytes"
This reverts commit db27ebb111e9f69efece08e4cb6a34ff980f8896.

Revert "rds: Fix min() warning in rds_message_inc_copy_to_user()"
This reverts commit 6ff4a8ad4b6eae5171754fb60418bc81834aa09b.

Revert "net: introduce helper macro for_each_cmsghdr" for net/rds
This reverts commit f95b414edb18de59940dcebbefb49cf25c6d505c for net/rds

Revert "put iov_iter into msghdr" for net/rds
This reverts commit c0371da6047abd261bc483c744dbc7d81a116172 for net/rds

Revert "rds: switch rds_message_copy_from_user() to iov_iter"
This reverts commit 083735f4b01b703184c0e11c2e384b2c60a8aea4.

Revert "rds: switch ->inc_copy_to_user() to passing iov_iter"
This reverts commit c310e72c89926e06138e4881f21e4c8da3e7ef18.

Revert "rds: avoid calling sock_kfree_s() on allocation failure"
This reverts commit dee49f203a7feef5d00c416b7dc7e34a7caba8e1.

Revert "net/rds: fix possible double free on sock tear down"
This reverts commit 593cbb3ec6a3f2424966832727f394b1696d0d72.

Revert "net/rds: do proper house keeping if connection fails in rds_tcp_conn_connect"
This reverts commit eb74cc97b830c1e438dc1d6b049f17bdb2b9aae5.

Revert "net/rds: call rds_conn_drop instead of open code it at rds_connect_complete"
This reverts commit 310886dd5fa3606d9325b10caf7c8ba5e9f9ab03.

Revert "treewide: fix synchronize_rcu() in comments" for net/rds
This reverts commit d7cdb968081727746c8d2fb31b12ea6d1694888e for net/rds.

Revert "net: Replace get_cpu_var through this_cpu_ptr" for net/rds
This reverts commit 903ceff7ca7b4d80c083a80ee5163b74e9fa359f for net/rds.

Revert "rds/tcp_listen: Replace comma with semicolon"
This reverts commit 01728371dc261c876d07e9228a55a096b6d9a1f9.

Revert "RDS/RDMA: Replace comma with semicolon"
This reverts commit cc2afe9fe25d99cbe19eac57c0f8f098b2710b7c.

Revert "net: rds: Use time_after() for time comparison"
This reverts commit 71fd762f2eef6acc848e262ac934fc694b49204e.

Revert "rds: remove the unneed NULL checking"
This reverts commit be7faf7168e831f17b85a96f2f797f504b66cfd7.

Revert "arch: Mass conversion of smp_mb__*()" for net/rds
This reverts commit 4e857c58efeb99393cba5a5d0d8ec7117183137c for net/rds.

Revert "net: Fix use after free by removing length arg from sk_data_ready callbacks." for net/rds
This reverts commit 676d23690fb62b5d51ba5d659935e9f7d9da9f8e for net/rds.

Revert "rds: prevent dereference of a NULL device in rds_iw_laddr_check"
This reverts commit bf39b4247b8799935ea91d90db250ab608a58e50.

Revert "net: add build-time checks for msg->msg_name size" for net/rds
This reverts commit 342dfc306fb32155314dad277f3c3686b83fb9f1 for net/rds.

Revert "net: rds: fix per-cpu helper usage"
This reverts commit c196403b79aa241c3fefb3ee5bb328aa7c5cc860.

Revert "net: replace macros net_random and net_srandom with direct calls to prandom" for net/rds
This reverts commit 63862b5bef7349dd1137e4c70702c67d77565785 for net/rds.

Revert "rds: prevent dereference of a NULL device"
This reverts commit c2349758acf1874e4c2b93fe41d072336f1a31d0.

Revert "rds: prevent BUG_ON triggered on congestion update to loopback"
This reverts commit 18fc25c94eadc52a42c025125af24657a93638c0.

Revert "net: rework recvmsg handler msg_name and msg_namelen logic" for net/rds
This reverts commit f3d3342602f8bcbf37d7c46641cb9bca7618eb1c for net/rds.

Revert "inet: convert inet_ehash_secret and ipv6_hash_secret to net_get_random_once" for net/rds
This reverts commit 1bbdceef1e535add893bf71d7b7ab102e4eb69eb for net/rds.

Revert "ipv4: split inet_ehashfn to hash functions per compilation unit" for net/rds
This reverts commit 65cd8033ff375b68037df61603ee68070dc48578 for net/rds.

Revert "net: misc: Remove extern from function prototypes" for net/rds
This reverts commit c1b1203d65955c179fec617ff17a21273f33a414 for net/rds.

Revert "net: Convert uses of typedef ctl_table to struct ctl_table" for net/rds
This reverts commit fe2c6338fd2c6f383c4d4164262f35c8f3708e1f for net/rds.

Revert "net/rds: zero last byte for strncpy"
This reverts commit 2e85d67690cf3ea3f074a6e872f675226883fe7f.

Revert "rds: simplify a warning message"
This reverts commit 7dac1b514a00817ddb43704068c14ffd8b8fba19.

Revert "rds: limit the size allocated by rds_message_alloc()"
This reverts commit ece6b0a2b25652d684a7ced4ae680a863af041e0.

Revert "hlist: drop the node parameter from iterators" for net/rds
This reverts commit b67bfe0d42cac56c512dd5da4b1b347a23f4b70a for net/rds.

Revert "net/rds: remove depends on CONFIG_EXPERIMENTAL"
This reverts commit e34430eeca6f3bd2308d4b4917cfb3a4367c2073.

Revert "IB/rds: suppress incompatible protocol when version is known"
This reverts commit a49675988c127b5b5876c252e5db2ee0410a10c2.

Revert "IB/rds: Correct ib_api use with gs_dma_address/sg_dma_len"
This reverts commit f2e9bd70327d788011cf787a51ceba5925bbc63a.

Revert "net: rds: use this_cpu_* per-cpu helper"
This reverts commit ae4b46e9d7128d2d76e6857fe0b9fc240e8ac695.

Revert "UAPI: (Scripted) Disintegrate include/linux" for
       include/linux/rds.h and include/uapi/linux/rds.h
This reverts commit 607ca46e97a1b6594b29647d98a32d545c24bdff for
       include/linux/rds.h and include/uapi/linux/rds.h

Revert "RDS: fix rds-ping spinlock recursion"
This reverts commit 5175a5e76bbdf20a614fb47ce7a38f0f39e70226.

Revert "rds: Don't disable BH on BH context"
This reverts commit bfdc587c5af4ff155cf702b972e8fcd66d77d5f2.

Revert "rds: set correct msg_namelen"
This reverts commit 06b6a1cf6e776426766298d055bb3991957d90a7.

Revert "net: Fix (nearly-)kernel-doc comments for various functions" for net/rds
This reverts commit 2c53040f018b6c36a46eec75b9b937aaa5f78e6d for net/rds.

Revert "rds_rdma: don't assume infiniband device is PCI"
This reverts commit a0c6ffbcfe600606b2d913dded4dc6b37b3bbbfd.

Revert "sock: Introduce named constants for sk_reuse" for net/rds
This reverts commit 4a17fd5229c1b6066aa478f6b690f8293ce811a1 for net/rds.

Revert "net: Convert all sysctl registrations to register_net_sysctl" for net/rds
This reverts commit ec8f23ce0f4005b74013d4d122e0d540397a93c9 for net/rds.

Revert "net: Move all of the network sysctls without a namespace into init_net." for net/rds
This reverts commit 5dd3df105b9f6cb7dd2472b59e028d0d1c878ecb for net/rds.

Revert "RDS: use gfp flags from caller in conn_alloc()"
This reverts commit f0229eaaf3f82522e2b16b41b0f45bb84a88d1b0.

Revert "Remove printk from rds_sendmsg"
This reverts commit a6506e1486181975d318344143aca722b2b91621.

Revert "rds: remove the second argument of k[un]map_atomic()"
This reverts commit 6114eab535ab49239e0a6ce08eb9243664aef993.

Revert "rds: Fix typo in iw_recv.c and ib_recv.c"
This reverts commit 5fd5c44d3f27c93685d4a036565245f3cdb8c033.

Revert "rds: Make rds_sock_lock BH rather than IRQ safe."
This reverts commit efc3dbc37412c027e363736b4f4c74ee5e8ecffc.

Revert "RDS: Remove some unused iWARP code"
This reverts commit 5b7bf42e3d47fb16aaf53776ae3eaaf1be247a35.

Revert "rds: drop "select LLIST""
This reverts commit 77c1c7c4bd4751dbf47cdacd0e73e67f0a1ed316.

Revert "treewide: use __printf not __attribute__((format(printf,...)))" for net/rds
This reverts commit b9075fa968a0a4347aef35e235e2995c0e57dddd for net/rds.

Revert "net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules" for net/rds
This reverts commit bc3b2d7fb9b014d75ebb79ba371a763dbab5e8cf for net/rds.

Revert "net: add moduleparam.h for users of module_param/MODULE_PARM_DESC" for net/rds
This reverts commit d9b9384215e17c68d7b6bd05d6fa409e5d4140d7 for net/rds.

Revert "net: Fix files explicitly needing to include module.h" for net/rds
This reverts commit 3a9a231d977222eea36eae091df2c358e03ac839 for net/rds.

Revert "RDSRDMA: Fix cleanup of rds_iw_mr_pool"
This reverts commit 85a64889492b45f931ddac87ec09d84aa7347ee1.

Revert "net, rds, Replace xlist in net/rds/xlist.h with llist"
This reverts commit 1bc144b62524970c8580f6d97a6df0e71c6ee388.

Revert "net: Convert vmalloc/memset to vzalloc" for net/rds
This reverts commit 3dbd4439837f2cfd2ff302897353f4b1b6263b2a for net/rds.

Revert "notifiers: cpu: move cpu notifiers into cpu.h" for net/rds
This reverts commit 80f1ff97d0a9d92f44d2b2dd9425afa950e58f2b for net/rds.

Revert "net: rds: fix const array syntax"
This reverts commit 3e878b8d54e0fc12df363ee8e4a638c8147aac98.

Revert "net/rds: use prink_ratelimited() instead of printk_ratelimit()"
This reverts commit cb0a60564943db21ed3af975ac3d578cdc80b329.

Revert "net: remove interrupt.h inclusion from netdevice.h" for net/rds
This reverts commit a6b7a407865aab9f849dd99a71072b7cd1175116 for net/rds.

Revert "RDMA/cma: Pass QP type into rdma_create_id()" for net/rds
This reverts commit b26f9b9949013fec31b23c426fc463164ae08891 for net/rds.

Revert "Fix common misspellings" for net/rds
This reverts commit 25985edcedea6396277003854657b5f3cb31a628 for net/rds.

Revert "rds: use little-endian bitops"
This reverts commit e1dc1c81b9d1c823f2a529b9b9cf8bf5dacbce6a.

Revert "rds: stop including asm-generic/bitops/le.h directly"
This reverts commit 12ce22423abacca70bf1dfbcb8543b3e2b74aad4.

Revert "rds: prevent BUG_ON triggering on congestion map updates"
This reverts commit 6094628bfd94323fc1cea05ec2c6affd98c18f7f.

Revert "rds/ib: use system_wq instead of rds_ib_fmr_wq"
This reverts commit c534a107e8fe446202b0fab102abc015c56c0317.

Revert "net: cleanup unused macros in net directory" for net/rds
This reverts commit 441c793a56502638d45d5da2195056d686147370 for net/rds.

Revert "Net: rds: Makefile: Remove deprecated items"
This reverts commit 094f2faaa2c4973e50979158f655a1d31a97ba98.

Revert "rds: Integer overflow in RDS cmsg handling"
This reverts commit 218854af84038d828a32f061858b1902ed2beec6.

Revert "rds: Fix rds message leak in rds_message_map_pages"
This reverts commit aa58163a76a3aef33c7220931543d45d0fe43753.

Revert "rds: Remove kfreed tcp conn from list"
This reverts commit 8200a59f24aeca379660f80658a8c0c343ca5c31.

Revert "rds: Lost locking in loop connection freeing"
This reverts commit 58c490babd4b425310363cbd1f406d7e508f77a5.

Revert "RDS: Let rds_message_alloc_sgs() return NULL"
This reverts commit d139ff0907dac9ef72fb2cf301e345bac3aec42f.

Revert "RDS: Copy rds_iovecs into kernel memory instead of rereading from userspace"
This reverts commit fc8162e3c034af743d8def435fda6396603d321f.

Revert "RDS: Clean up error handling in rds_cmsg_rdma_args"
This reverts commit f4a3fc03c1d73753879fb655b8cd628b29f6706b.

Revert "RDS: Return -EINVAL if rds_rdma_pages returns an error"
This reverts commit a09f69c49b84b161ebd4dd09d3cce1b68297f1d3.

Revert "net: fix rds_iovec page count overflow"
This reverts commit 1b1f693d7ad6d193862dcb1118540a030c5e761f.

Revert "rds: make local functions/variables static"
This reverts commit ff51bf841587c75b58d25ed77263158619784dd3.

Revert "De-pessimize rds_page_copy_user"
This reverts commit 799c10559d60f159ab2232203f222f18fa3c4a5f.

Revert "net: fix a lockdep splat" for net/rds
This reverts commit f064af1e500a2bf4607706f0f458163bdb2a6ea5 for net/rds.

Revert "rds: spin_lock_irq() is not nestable"
This reverts commit aef3ea33e85035f7c827c1db9155f97f4b7ee725.

Revert "rds: double unlock in rds_ib_cm_handle_connect()"
This reverts commit f4fa7f3807d41b78056c6648b04bfadd737df21e.

Revert "rds: signedness bug"
This reverts commit 9b9d2e00bfa592aceda7b43da76c670df61faa97.

Revert "RDS: Remove dead struct from rds.h"
This reverts commit 905d64c89e2a9d71d0606904b7c3908633db6072.

Revert "RDS: rds.h: Replace u_int[size]_t with uint[size]_t"
This reverts commit a46f561b774d90d8616473d56696e7d44fa1c9f1.

Revert "RDS: Add rds.h to exported headers list" for include/linux/rds.h
This reverts commit fd128dfa50cfc4f2959dc4aa5d7468d33b988332 for include/linux/rds.h.

Revert "RDS: Implement masked atomic operations"
This reverts commit 20c72bd5f5f902e5a8745d51573699605bf8d21c.

Revert "RDS/IB: print string constants in more places"
This reverts commit 59f740a6aeb2cde2f79fe0df38262d4c1ef35cd8.

Revert "RDS: cancel connection work structs as we shut down"
This reverts commit 4518071ac1bcb76c64a55a3fddb39fb3d39add41.

Revert "RDS: don't call rds_conn_shutdown() from rds_conn_destroy()"
This reverts commit ffcec0e110c198717eb0f6ac000c1e5397db9451.

Revert "RDS: have sockets get transport module references"
This reverts commit 5adb5bc65f93e52341c3fc9d03d4030dd375e256.

Revert "RDS: remove old rs_transport comment"
This reverts commit 77510481c0c3980c8979ed236d63e59221fb8ce5.

Revert "RDS: lock rds_conn_count decrement in rds_conn_destroy()"
This reverts commit fe8ff6b58f040dd52d2db45972db8e0301847f1c.

Revert "RDS/IB: protect the list of IB devices"
This reverts commit ea819867b788728aca60717e4fdacb3df771f670.

Revert "RDS/IB: print IB event strings as well as their number"
This reverts commit 1bde04a63d532c2540d6fdee0a661530a62b1686.

Revert "RDS: flush fmrs before allocating new ones"
This reverts commit 8576f374ac9537674e3cccb0a9d43fa2b7ebbf5b.

Revert "RDS: properly use sg_init_table"
This reverts commit b4e1da3c9a0ac9b01f45a8578b7347e3a31f9fb8.

Revert "RDS/IB: track signaled sends"
This reverts commit f046011cd73c372267befd10242988eb744649fe.

Revert "RDS: remove __init and __exit annotation"
This reverts commit ef87b7ea39a91906218a262686bcb8bad8b6b46e.

Revert "RDS/IB: Use SLAB_HWCACHE_ALIGN flag for kmem_cache_create()"
This reverts commit c20f5b9633bb0953bd2422f0f1430a2028cdbd0a.

Revert "RDS/IB: always process recv completions"
This reverts commit d455ab64096b9a86849c7315c53e595330842db6.

Revert "RDS: return to a single-threaded krdsd"
This reverts commit 80c51be56ffa257d3177f0d750d90be65d30c22f.

Revert "RDS/IB: create a work queue for FMR flushing"
This reverts commit 515e079dab19cf774d1eec6e5f4ed65509e31ef1.

Revert "RDS/IB: destroy connections on rmmod"
This reverts commit 8aeb1ba6630ffd44001ae9833842794df0107676.

Revert "RDS/IB: wait for IB dev freeing work to finish during rmmod"
This reverts commit 24fa163a4bae74b3378d30e1bc776568cfca8121.

Revert "RDS/IB: Make ib_recv_refill return void"
This reverts commit b6fb0df12db6c8b6bbcc7b5c9459b3bbf5f0cee6.

Revert "RDS: Remove unused XLIST_PTR_TAIL and xlist_protect()"
This reverts commit fbf4d7e3d03587a983ee4e536251ea6c1c848ec2.

Revert "RDS: whitespace"
This reverts commit c9455d9996ba84af1f534c7e3944ea6f35d2fc54.

Revert "RDS: use delayed work for the FMR flushes"
This reverts commit 7a0ff5dbdd0b4cb7ea8764da9d78f4bb2eebaf31.

Revert "rds: more FMRs are faster"
This reverts commit eabb732279f1a41ac9d066aeb56973ae505c4cbc.

Revert "rds: recycle FMRs through lockless lists"
This reverts commit 6fa70da6081bbcf948801fd5ee0be4d222298a43.

Revert "rds: fix rds_send_xmit() serialization"
This reverts commit 0f4b1c7e89e699f588807a914ec6e6396c851a72.

Revert "rds: block ints when acquiring c_lock in rds_conn_message_info()"
This reverts commit 501dcccdb7a2335cde07d4acb56e636182d62944.

Revert "rds: remove unused rds_send_acked_before()"
This reverts commit 671202f3491cccdb267f88ad59ba0635aeb2a22e.

Revert "RDS: use friendly gfp masks for prefill"
This reverts commit 037f18a3074753991656189a091a5fa371999107.

Revert "RDS/IB: Add caching of frags and incs"
This reverts commit 33244125871734ebc0d8d147680a0d7e99385e0b.

Revert "RDS/IB: Remove ib_recv_unmap_page()"
This reverts commit fc24f78085e8771670af42f2b8929b16a0c98a22.

Revert "RDS: Assume recv->r_frag is always NULL in refill_one()"
This reverts commit 3427e854e1a0e76be8b3d75fc0fa878f59b43693.

Revert "RDS: Use page_remainder_alloc() for recv bufs"
This reverts commit 0b088e003ccf316a76c51be5dec2d70b93be3be8.

Revert "RDS/IB: disconnect when IB devices are removed"
This reverts commit fc19de38be924728fea76026c0d1a6c4b6156084.

Revert "RDS: introduce rds_conn_connect_if_down()"
This reverts commit f3c6808d3d8513db2b0543538fc35c25a60fe7a7.

Revert "RDS/IB: add refcount tracking to struct rds_ib_device"
This reverts commit 3e0249f9c05cb77b66f7f09644ca9ca208d991a9.

Revert "RDS/IB: get the xmit max_sge from the RDS IB device on the connection"
This reverts commit 89bf9d4158b5a1b6bd00960eb2e47601ec8cc138.

Revert "RDS/IB: rds_ib_cm_handle_connect() forgot to unlock c_cm_lock"
This reverts commit a46ca94e7fb2c93a59e08b42fd77d8c478fda5fc.

Revert "rds: Fix reference counting on the for xmit_atomic and xmit_rdma"
This reverts commit 1cc2228c599f173d77000a250bf0541294e1a7be.

Revert "rds: use RCU to protect the connection hash"
This reverts commit bcf50ef2ce3c5d8f2fe995259da16677898cb300.

Revert "RDS: use locking on the connection hash list"
This reverts commit abf454398c2ebafc629ebb8b149f5a752c79e919.

Revert "rds: Fix RDMA message reference counting"
This reverts commit c9e65383a20d9a656db70efbf67e57f8115ad776.

Revert "rds: don't let RDS shutdown a connection while senders are present"
This reverts commit 7e3f2952eeb1a0fe2aa9882fd1705a88f9d89b35.

Revert "rds: Use RCU for the bind lookup searches"
This reverts commit 38a4e5e61344490f18241333d7b1b368a3a38748.

Revert "RDS/IB: add _to_node() macros for numa and use {k,v}malloc_node()"
This reverts commit e4c52c98e04937ea87b0979a81354d0040d284f9.

Revert "RDS/IB: Remove unused variable in ib_remove_addr()"
This reverts commit 4a81802b5e5e0b059627d7173c917711cf35e668.

Revert "rds: rcu-ize rds_ib_get_device()"
This reverts commit 764f2dd92f5cd308d1c4372b33fea2b265c093f5.

Revert "rds: per-rm flush_wait waitq"
This reverts commit c83188dcd76b1f0c17c31b4bbd8de57c634b19f8.

Revert "rds: switch to rwlock on bind_lock"
This reverts commit 976673ee1b92d939168c8c1fbad3e16c45caa545.

Revert "RDS: Update comments in rds_send_xmit()"
This reverts commit ce47f52f42e69d48d1b63fa618fce9cd7ffa9417.

Revert "RDS: Use a generation counter to avoid rds_send_xmit loop"
This reverts commit 9e29db0e3645cafa980e68a9c717a761448389e1.

Revert "RDS: Get pong working again"
This reverts commit acfcd4d4ec4ed8cb504f96d4fabb7a94029b362b.

Revert "RDS: Do wait_event_interruptible instead of wait_event"
This reverts commit a40aa9233aa22d69212d02f92e5b607bd4d658f4.

Revert "RDS: Remove send_quota from send_xmit()"
This reverts commit fcc5450c6386526034edc437e4cb2c67a6fdd7e9.

Revert "RDS: Move atomic stats from general to ib-specific area"
This reverts commit 51e2cba8b5936c13b40f0fa11aa4e84683dbc751.

Revert "RDS: rds_message_unmapped() doesn't need to check if queue active"
This reverts commit ab1a6926f589c51e7a57ce7544d85272c4acc854.

Revert "RDS: Fix locking in send on m_rs_lock"
This reverts commit cf4b7389ee812817deeb11da1422004e01b50646.

Revert "RDS: Use NOWAIT in message_map_pages()"
This reverts commit f2ec76f288118fb18449402d75383212cbcb6762.

Revert "RDS: Bypass workqueue when queueing cong updates"
This reverts commit 2fa57129df61bf3fb7d90c5486fe15df94091f61.

Revert "RDS: Call rds_send_xmit() directly from sendmsg()"
This reverts commit a7d3a281483684f77e350b045af7f80a149fc4c7.

Revert "RDS: rds_send_xmit() locking/irq fixes"
This reverts commit 2ad8099b58f274dc23bc866ca259d7e5db87fa1a.

Revert "RDS: Change send lock from a mutex to a spinlock"
This reverts commit 049ee3f500954176a87f22e6ee3e98aecb1b8958.

Revert "RDS: Refill recv ring directly from tasklet"
This reverts commit f17a1a55fb672d7f64be7f2e940ef5669e5efa0a.

Revert "RDS: Stop supporting old cong map sending method"
This reverts commit 77dd550e5547846604ff6f90c4dc6bba4414e485.

Revert "RDS/IB: Do not wait for send ring to be empty on conn shutdown"
This reverts commit e32b4a70495aac6a612e13f4c21db09dd756ff2c.

Revert "RDS: Perform unmapping ops in stages"
This reverts commit ff3d7d36134ef7138803734fdbf91cc986ea7976.

Revert "RDS: Make sure cmsgs aren't used in improper ways"
This reverts commit aa0a4ef4ac3a3c5ffa35e32520bfbc0922ef3630.

Revert "RDS: Add flag for silent ops. Do atomic op before RDMA"
This reverts commit 2c3a5f9abb1dc5efdab8ba9a568b1661c65fd1e3.

Revert "RDS: Move some variables around for consistency"
This reverts commit 7e3bd65ebfd5d6cd76b8b979920c632d6e6b4b2a.

Revert "RDS: queue failure notifications for dropped atomic ops"
This reverts commit 940786eb0a0faf3f30898a1cc7c1540d54c1aff6.

Revert "RDS: Add a warning if trying to allocate 0 sgs"
This reverts commit ee4c7b47e46a9dea789aadb8279c8505f755b3ee.

Revert "RDS: Do not set op_active in r_m_copy_from_user()."
This reverts commit 372cd7dedfd1ea93a9ae8d9c282e910dc1b76773.

Revert "RDS: Rewrite rds_send_xmit"
This reverts commit 5b2366bd2835919e2e6a836e837eab4a9274bd46.

Revert "RDS: Rename data op members prefix from m_ to op_"
This reverts commit 6c7cc6e4694dc464ae884332f2a322973497e3cf.

Revert "RDS: Remove struct rds_rdma_op"
This reverts commit f8b3aaf2ba8ca9e27b47f8bfdff07c8b968f2c05.

Revert "RDS: purge atomic resources too in rds_message_purge()"
This reverts commit d0ab25a83c4a08cd98b73a37d3f4c069f7b4f50b.

Revert "RDS: Inline rdma_prepare into cmsg_rdma_args"
This reverts commit 4324879df06ba4db01a0b455af2d003f117e6aa3.

Revert "RDS: Implement silent atomics"
This reverts commit 241eef3e2f51fe4ad50abacd7f79c4e2d468197e.

Revert "RDS: Move loop-only function to loop.c"
This reverts commit d37c9359056f4f07b37e59810f0ece1031e280b2.

Revert "RDS/IB: Make all flow control code conditional on i_flowctl"
This reverts commit c8de3f1005e8359ea07083e37f3f993646e1adba.

Revert "RDS: Remove unsignaled_bytes sysctl"
This reverts commit 1d34f175712b59ad292ecbbaa8fc05402a1fd8ed.

Revert "RDS: rewrite rds_ib_xmit"
This reverts commit da5a06cef5724737af4315715632f0a07dd5e116.

Revert "RDS/IB: Remove ib_[header/data]_sge() functions"
This reverts commit 919ced4ce7d6ac62dd5be62d8993fe22a527d53a.

Revert "RDS/IB: Remove dead code"
This reverts commit 6f3d05db0da0b874afd2dd229bed715133532f8d.

Revert "RDS/IB: Disallow connections less than RDS 3.1"
This reverts commit f147dd9ecabf23fd63d2562ffe64252a0453ecde.

Revert "RDS/IB: eliminate duplicate code"
This reverts commit 9c030391e8741695ff6114703e4edccccb634479.

Revert "RDS: inc_purge() transport function unused - remove it"
This reverts commit 809fa148a29467954280fe8b7f97c92403f6293c.

Revert "RDS: Whitespace"
This reverts commit 6200ed7799d9225f363f157ab61f1566cfd80e19.

Revert "RDS: Do not mask address when pinning pages"
This reverts commit d22faec22c2ab2364fd8fc3c8159b0b5b28b0fd1.

Revert "RDS: Base init_depth and responder_resources on hw values"
This reverts commit 40589e74f7ba855f3a887c9d4abe9d100c5b039c.

Revert "RDS: Implement atomic operations"
This reverts commit 15133f6e67d8d646d0744336b4daa3135452cb0d.

Revert "RDS: Clear up some confusing code in send_remove_from_sock"
This reverts commit a63273d4992603979ddb181b6a8f07082839b39f.

Revert "RDS: make sure all sgs alloced are initialized"
This reverts commit f4dd96f7b27743e568cec519eff0f951c56833c6.

Revert "RDS: make m_rdma_op a member of rds_message"
This reverts commit ff87e97a9d70c9ae133d3d3d7792b26ab85f4297.

Revert "RDS: fold rdma.h into rds.h"
This reverts commit 21f79afa5fda2820671a8f64c3d0e43bb118053b.

Revert "RDS: Explicitly allocate rm in sendmsg()"
This reverts commit fc445084f185cdd877bec323bfe724a361e2292a.

Revert "RDS: cleanup/fix rds_rdma_unuse"
This reverts commit 3ef13f3c22aaea28aff383cb0883481d24885456.

Revert "RDS: break out rdma and data ops into nested structs in rds_message"
This reverts commit e779137aa76d38d5c33a98ed887092ae4e4f016f.

Revert "RDS: cleanup: remove "== NULL"s and "!= NULL"s in ptr comparisons"
This reverts commit 8690bfa17aea4c42da1bcf90a7af93d161eca624.

Revert "RDS: move rds_shutdown_worker impl. to rds_conn_shutdown"
This reverts commit 2dc393573430f853e56e25bf4b41c34ba2aa8fd6.

Revert "RDS: Fix locking in send on m_rs_lock"
This reverts commit 9de0864cf55927a7383b5ba6e48834ff3ef053de.

Revert "RDS: Rewrite rds_send_drop_to() for clarity"
This reverts commit 7c82eaf00ec7d460932be9314b29997006b799b6.

Revert "RDS: Fix corrupted rds_mrs"
This reverts commit 35b52c70534cb7193b218ec12efe6bc595312097.

Revert "RDS: Fix BUG_ONs to not fire when in a tasklet"
This reverts commit 9e2effba2c16fc3bd47da605116485afe01e0be0.

Revert "net: rds: remove duplication type definitions"
This reverts commit fcb12fd2236f49aa8fdc1568ed4ebdfe4fddc6b5.

Revert "rds: fix a leak of kernel memory"
This reverts commit f037590fff3005ce8a1513858d7d44f50053cc8f.

Revert "net: use __packed annotation" for include/linux/rds.h
This reverts commit bc10502dba37d3b210efd9f3867212298f13b78e for include/linux/rds.h.

Revert "net/rds: Add missing mutex_unlock"
This reverts commit 5daf47bb4e708fde32c1856a0d049e3c3d03c36c.

Revert "net: Remove unnecessary semicolons after switch statements" for net/rds
This reverts commit ccbd6a5a4f76e821ed36f69fdaf59817c3a7f18e for net/rds.

Revert "rdma: potential ERR_PTR dereference"
This reverts commit 24acc6895616b373475e92e49925efc3ef591563.

Revert "net: sk_sleep() helper" for net/rds
This reverts commit aa395145165cb06a0d0885221bbe0ce4a564391d for net/rds.

Revert "include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h" for net/rds
This reverts commit 5a0e3ad6af8660be21ca98a971cd00f331318c05 for net/rds.

Revert "rds: cleanup: remove unneeded variable"
This reverts commit 18062ca94714a66e75da8a22e010d0e8e61ab4cd.

Revert "RDS: Enable per-cpu workqueue threads"
This reverts commit 768bbedf9ca4cc4784eae2003f37abe0818fe0b0.

Revert "RDS: Do not call set_page_dirty() with irqs off"
This reverts commit 561c7df63e259203515509a7ad075382a42bff0c.

Revert "RDS: Properly unmap when getting a remote access error"
This reverts commit 450d06c0208ad195ccd74a7edd11321e316791ad.

Revert "RDS: only put sockets that have seen congestion on the poll_waitq"
This reverts commit b98ba52f96e7cdb4dbe2b06bced83d95d94c9d02.

Revert "RDS: Fix locking in rds_send_drop_to()"
This reverts commit 550a8002e4340eaf3bc333e33b59427e9c20272d.

Revert "RDS: Turn down alarming reconnect messages"
This reverts commit 97069788d6784ac92d050557a02f6e7bf4d1f53d.

Revert "RDS: Workaround for in-use MRs on close causing crash"
This reverts commit 571c02fa81e43ebb4b793f626d6c7bf0fa18902b.

Revert "RDS: Fix send locking issue"
This reverts commit 048c15e641289d902f7ef9f1241068d8045e210c.

Revert "RDS: Fix congestion issues for loopback"
This reverts commit 2e7b3b994529d4760231a45a6b88950187bda877.

Revert "RDS/TCP: Wait to wake thread when write space available"
This reverts commit 8e82376e5f72bb576504c8c6117685e56c1b97db.

Revert "RDS: update copy_to_user state in tcp transport"
This reverts commit b075cfdb666d6fa90c55c8619186398a3c4fd865.

Revert "RDS: sendmsg() should check sndtimeo, not rcvtimeo"
This reverts commit 1123fd734df6ad82373a5a27f0f2ed3115555b9d.

Revert "RDS: Do not BUG() on error returned from ib_post_send"
This reverts commit 735f61e62611161588123930823af6e6a9fd5c2c.

Revert "net/rds: remove uses of NIPQUAD, use %pI4"
This reverts commit 6884b348ed759184032306c9435a727741a72298.

Revert "net: Move && and || to end of previous line" for net/rds
This reverts commit f64f9e719261a87818dd192a3a2352e5b20fbd0f for net/rds.

Revert "RDMA/cm: fix loopback address support" for net/rds
This reverts commit 6f8372b69c3198e06cecb1df2cb9682d0c55e657 for net/rds.

Revert "sysctl: Drop & in front of every proc_handler." for net/rds
This reverts commit 6d4561110a3e9fa742aeec6717248a491dfb1878 for net/rds.

Revert "sysctl net: Remove unused binary sysctl code" for net/rds
This reverts commit f8572d8f2a2ba75408b97dc24ef47c83671795d7 for net/rds.

Revert "net: pass kern to net_proto_family create function" for net/rds
This reverts commit 3f378b684453f2a028eda463ce383370545d9cc9 for net/rds.

Revert "RDS/IB+IW: Move recv processing to a tasklet"
This reverts commit d521b63b27e3a397e0ef7ca86b6e813861083c83.

Revert "RDS: Do not send congestion updates to loopback connections"
This reverts commit 0514f8a9c0cbd26afa70dc56406cc0ee1e134dcf.

Revert "RDS: Fix panic on unload"
This reverts commit 433d308dd85e506bb6529177cc0f997627d87ed6.

Revert "RDS: Fix potential race around rds_i[bw]_allocation"
This reverts commit 86357b19bcabd9355937f3fb84f90ba9fe76a5d3.

Revert "RDS: Add GET_MR_FOR_DEST sockopt"
This reverts commit 244546f0d3101c5441f5b14cfe8a79d62679eaea.

Revert "inet: rename some inet_sock fields" for net/rds
This reverts commit c720c7e8383aff1cb219bddf474ed89d850336e3 for net/rds.

Revert "net: mark net_proto_ops as const" for net/rds
This reverts commit ec1b4cf74c81bfd0fbe5bf62bafc86c45917e72f for net/rds.

Revert "net: Make setsockopt() optlen be unsigned." for net/rds
This reverts commit b7058842c940ad2c08dd829b21e5c92ebe3b8758 for net/rds.

Revert "net: constify remaining proto_ops" for net/rds
This reverts commit 5708e868dc512f055f0ea4a14d01f8252c3ca8a1 for net/rds.

Revert "RDS: Add a debug message suggesting to load transport modules"
This reverts commit f2c449320d547bd5c281649eb1d99afb20765144.

Revert "RDS: Track transports via an array, not a list"
This reverts commit 335776bd696a6bf95134baf8ad95847371e4d5f6.

Revert "RDS: Modularize RDMA and TCP transports"
This reverts commit 40d866095df3bb70ded1813f4852cab445ef678b.

Revert "RDS: Export symbols from core RDS"
This reverts commit 616b757ae18fb8ec2dfe7ff9d3f589f82cb0eb9d.

Revert "RDS: Add TCP transport to RDS"
This reverts commit 70041088e3b976627ba9a183b812f39ef8a9ba0e.

Revert "net/rds: Use AF_INET for sin_family field"
This reverts commit 3d7ddd540b4c2d24c6a3e7a52c083a0c31e6151c.

Revert "net: mark read-only arrays as const" for net/rds
This reverts commit 36cbd3dcc10384f813ec0814255f576c84f2bcd4 for net/rds.

Revert "RDS: Refactor end of __conn_create for readability"
This reverts commit cb24405e67e56cbef51b5e4d0bb0a0fde167261f.

Revert "RDS/IW: Remove dead code"
This reverts commit ed9e352a350ec85eb354046e0db6a86019620f53.

Revert "RDS/IW: Remove page_shift variable from iwarp transport"
This reverts commit 404bb72a56e553febe1055f98347a7a3e3145759.

Revert "RDS/IB: Always use PAGE_SIZE for FMR page size"
This reverts commit a870d62726721785c34fa73d852bd35e5d1b295b.

Revert "RDS: Fix completion notifications on blocking sockets"
This reverts commit edacaeae52ade6cbb3a0704db32a9fb4a219dee3.

Revert "RDS/IB: Drop connection when a fatal QP event is received"
This reverts commit fdf6e6b4afd8a56fa58f70a3950bd7ea7fbaef5f.

Revert "RDS/IB: Disable flow control in sysctl and explain why"
This reverts commit 68cb01c1ba312add7c7cc7da1bbe98b3071904d1.

Revert "RDS/IB: Move tx/rx ring init and refill to later"
This reverts commit e11d912a7dd4dfe388f38ba3080a6d067a57b23d.

Revert "RDS: Don't set c_version in __rds_conn_create()"
This reverts commit 9099707ded4b3aeda7b1a6c1c87076bd18578d24.

Revert "RDS/IB: Rename byte_len to data_len to enhance readability"
This reverts commit 597ddd50e1c07ac55ac7742442690efcf16a37f5.

Revert "RDS/RDMA: Fix cut-n-paste errors in printks in rdma_transport.c"
This reverts commit 92c330b9e93ce70a8c45a6b8b0a551321d783feb.

Revert "RDS/IB: Fix printk to indicate remote IP, not local"
This reverts commit 8dacd57e7ebc307d4d7c27c5d1caada4c4e63ebd.

Revert "RDS/IB: Handle connections using RDS 3.0 wire protocol"
This reverts commit 02a6a2592e41d27644d647f3bce23598649961bc.

Revert "RDS/IB: Improve RDS protocol version checking"
This reverts commit 9ddbcfa098bae757d3760dd1dbf2847a0bd5a525.

Revert "RDS: Set retry_count to 2 and make modifiable via modparam"
This reverts commit 3ba23ade464cca7c4a7ba5628c613339d3f2e161.

Revert "percpu: use DEFINE_PER_CPU_SHARED_ALIGNED()" for net/rds
This reverts commit b9bf3121af348d9255f1c917830fe8c2df52efcb for net/rds.

Revert "FRV: Fix the section attribute on UP DECLARE_PER_CPU()" for net/rds
This reverts commit 9b8de7479d0dbab1ed98b5b015d44232c9d3d08e for net/rds.

Revert "ERR_PTR() dereference in net/rds/ib.c"
This reverts commit 94713bab649736177a1c33a39b7bb33cbd5af3a5.

Revert "ERR_PTR() dereference in net/rds/iw.c"
This reverts commit 5d57eeb52ae71a03c8e083a9b0a818a9b63ca440.

Revert "rds: use kmem_cache_zalloc instead of kmem_cache_alloc/memset"
This reverts commit 05a178ecdc7396b78dfbb5d8bda65108b37b8672.

Revert "RDS: remove unused #include <version.h>"
This reverts commit 9c56a84478b708e5d8d34d28cc3a8e71842d5b05.

Revert "RDS: use get_user_pages_fast()"
This reverts commit 830eb7d56c18ff4c29acd8b0bb48db404660321f.

Revert "RDS: Establish connection before parsing CMSGs"
This reverts commit 49f696914100780f6bf8e652d3468de0015d6172.

Revert "RDS: Fix ordering in a conditional"
This reverts commit 7acd4a794c1530af063e51f3f7171e75556458f3.

Revert "RDS/IW+IB: Allow max credit advertise window."
This reverts commit 7b70d0336da777c00395cc7a503497c2cdabd1a8.

Revert "RDS/IW+IB: Set the RDS_LL_SEND_FULL bit when we're throttled."
This reverts commit d39e0602bb987133321d358d9b837d67c27b223d.

Revert "RDS: Correct some iw references in rdma_transport.c"
This reverts commit 11bc9421da3040c71fc96da1a31e95217e8cf2af.

Revert "RDS/IW+IB: Set recv ring low water mark to 1/2 full."
This reverts commit 5cd2fe6d54c91aa76893b3034f5f3473063c0202.

-------

Signed-off-by: Ajaykumar Hotchandani <ajaykumar.hotchandani@oracle.com>
(Added revert details)
Signed-off-by: Mukesh Kacker <mukesh.kacker@oracle.com>