From: Ann Koehler <amk@xxxxxxxx> The extent is active so we need to abort and let the caller re-dirty the page. If we continued on here, and we were the one making the extent active, we could deadlock waiting for the page writeback to clear but it won't because the extent is active and won't be written out. Signed-off-by: Ann Koehler <amk@xxxxxxxx> Reviewed-on: http://review.whamcloud.com/8278 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4253 Reviewed-by: Jinshan Xiong <jinshan.xiong@xxxxxxxxx> Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@xxxxxxxxx> Reviewed-by: Alexey Lyashkov <alexey_lyashkov@xxxxxxxxxxx> Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> Signed-off-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> --- drivers/staging/lustre/lustre/osc/osc_cache.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c index b92a02e..af25c19 100644 --- a/drivers/staging/lustre/lustre/osc/osc_cache.c +++ b/drivers/staging/lustre/lustre/osc/osc_cache.c @@ -2394,6 +2394,12 @@ int osc_flush_async_page(const struct lu_env *env, struct cl_io *io, * really sending the RPC. */ case OES_TRUNC: /* race with truncate, page will be redirtied */ + case OES_ACTIVE: + /* The extent is active so we need to abort and let the caller + * re-dirty the page. If we continued on here, and we were the + * one making the extent active, we could deadlock waiting for + * the page writeback to clear but it won't because the extent + * is active and won't be written out. */ GOTO(out, rc = -EAGAIN); default: break; -- 1.8.5.3 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
