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| author |   Alexander Boyko <alexander_boyko@xyratex.com> | 2015-02-01 21:52:01 -0500 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-07 17:27:16 +0800 |
| commit | c00266e369b945945316dad3869342d07f4be868 (patch) | |
| tree | 4f7cd71d00a56256616265b80a3ff40ed1b23c91 /drivers/staging | |
| parent | staging/lustre/ptlrpc: avoid list scan in ptlrpcd_check (diff) | |
| download | linux-dev-c00266e369b945945316dad3869342d07f4be868.tar.xz linux-dev-c00266e369b945945316dad3869342d07f4be868.zip | |
staging/lustre/osc: split different type of IO
Do not allow different type of pages at the same rpc.
Signed-off-by: Alexander Boyko <alexander_boyko@xyratex.com>
Signed-off-by: Vitaly Fertman <vitaly_fertman@xyratex.com>
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 <jinshan.xiong@intel.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/lustre/lustre/osc/osc_cache.c | 12 |
1 files changed, 12 insertions, 0 deletions
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) |