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| author | Jinshan Xiong <jinshan.xiong@intel.com> | 2017-01-28 19:04:34 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-03 13:01:37 +0100 |
| commit | 198a49a964a0f76f14c26079065fb48c71db48f3 (patch) | |
| tree | ee63dd968f2d2606cf0be671c69ef4d370127bcf /drivers/staging/lustre/lustre/ldlm/ldlm_lib.c | |
| parent | ea3f00df27159969c061031a21965970f85c1b61 (diff) | |
| download | op-kernel-dev-198a49a964a0f76f14c26079065fb48c71db48f3.zip op-kernel-dev-198a49a964a0f76f14c26079065fb48c71db48f3.tar.gz | |
staging: lustre: clio: revise readahead to support 16MB IO
Read ahead currently doesn't handle 16MB RPC packets correctly
by assuming the packets are a default size instead of querying
the size. This work adjust the read ahead policy to issue
read ahead RPC by the underlying RPC size.
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Gu Zheng <gzheng@ddn.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7990
Reviewed-on: http://review.whamcloud.com/19368
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Li Xi <lixi@ddn.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/lustre/lustre/ldlm/ldlm_lib.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/ldlm/ldlm_lib.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c index 675e25b..95b8c76 100644 --- a/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c @@ -351,13 +351,11 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg) cli->cl_supp_cksum_types = OBD_CKSUM_CRC32; atomic_set(&cli->cl_resends, OSC_DEFAULT_RESENDS); - /* This value may be reduced at connect time in - * ptlrpc_connect_interpret() . We initialize it to only - * 1MB until we know what the performance looks like. - * In the future this should likely be increased. LU-1431 + /* + * Set it to possible maximum size. It may be reduced by ocd_brw_size + * from OFD after connecting. */ - cli->cl_max_pages_per_rpc = min_t(int, PTLRPC_MAX_BRW_PAGES, - LNET_MTU >> PAGE_SHIFT); + cli->cl_max_pages_per_rpc = PTLRPC_MAX_BRW_PAGES; /* * set cl_chunkbits default value to PAGE_CACHE_SHIFT, |
