mirror of https://gitee.com/openkylin/linux.git
a492f07545
The blk_get_request function may fail in low-memory conditions or during device removal (even if __GFP_WAIT is set). To distinguish between these errors, modify the blk_get_request call stack to return the appropriate ERR_PTR. Verify that all callers check the return status and consider IS_ERR instead of a simple NULL pointer check. For consistency, make a similar change to the blk_mq_alloc_request leg of blk_get_request. It may fail if the queue is dead, or the caller was unwilling to wait. Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com> Acked-by: Jiri Kosina <jkosina@suse.cz> [for pktdvd] Acked-by: Boaz Harrosh <bharrosh@panasas.com> [for osd] Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| Transition-notes | ||
| aten.c | ||
| bpck.c | ||
| bpck6.c | ||
| comm.c | ||
| dstr.c | ||
| epat.c | ||
| epia.c | ||
| fit2.c | ||
| fit3.c | ||
| friq.c | ||
| frpw.c | ||
| kbic.c | ||
| ktti.c | ||
| mkd | ||
| on20.c | ||
| on26.c | ||
| paride.c | ||
| paride.h | ||
| pcd.c | ||
| pd.c | ||
| pf.c | ||
| pg.c | ||
| ppc6lnx.c | ||
| pseudo.h | ||
| pt.c | ||