From: Alexander Boyko Date: Mon, 2 Feb 2015 02:52:01 +0000 (-0500) Subject: staging/lustre/osc: split different type of IO X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c00266e369b945945316dad3869342d07f4be868;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git staging/lustre/osc: split different type of IO Do not allow different type of pages at the same rpc. Signed-off-by: Alexander Boyko Signed-off-by: Vitaly Fertman Xyratex-bug-id: MRP-859 Reviewed-on: http://review.whamcloud.com/10930 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3192 Reviewed-by: Jinshan Xiong Reviewed-by: Niu Yawei Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c index 370e6d4896c6..7022ed42d2d1 100644 --- a/drivers/staging/lustre/lustre/osc/osc_cache.c +++ b/drivers/staging/lustre/lustre/osc/osc_cache.c @@ -1820,6 +1820,9 @@ static int try_to_add_extent_for_io(struct client_obd *cli, int *pc, unsigned int *max_pages) { struct osc_extent *tmp; + struct osc_async_page *oap = list_first_entry(&ext->oe_pages, + struct osc_async_page, + oap_pending_item); EASSERT((ext->oe_state == OES_CACHE || ext->oe_state == OES_LOCK_DONE), ext); @@ -1829,6 +1832,10 @@ static int try_to_add_extent_for_io(struct client_obd *cli, return 0; list_for_each_entry(tmp, rpclist, oe_link) { + struct osc_async_page *oap2; + + oap2 = list_first_entry(&tmp->oe_pages, struct osc_async_page, + oap_pending_item); EASSERT(tmp->oe_owner == current, tmp); #if 0 if (overlapped(tmp, ext)) { @@ -1836,6 +1843,11 @@ static int try_to_add_extent_for_io(struct client_obd *cli, EASSERT(0, ext); } #endif + if (oap2cl_page(oap)->cp_type != oap2cl_page(oap2)->cp_type) { + CDEBUG(D_CACHE, "Do not permit different type of IO" + " for a same RPC\n"); + return 0; + } if (tmp->oe_srvlock != ext->oe_srvlock || !tmp->oe_grants != !ext->oe_grants)