From: James Nunez Date: Sun, 27 Apr 2014 17:06:42 +0000 (-0400) Subject: staging/lustre/hsm: HSM requests not delivered X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e55c447647c26cb666fce054894f9faeb69d21b2;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git staging/lustre/hsm: HSM requests not delivered The total size of an HSM archive request may exceed the desired (LNET) message. When this happens, it can hang the client and not allow the archive request to succeed. Before we know the total size of the hsm_action_items, we need to limit the size of the reguest. Doing this limits the number of items that can be sent in one archive request. We'e reduced the size allowed for the user archive request to MDS_MAXREQSIZE/3. Signed-off-by: James Nunez Reviewed-on: http://review.whamcloud.com/9393 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4639 Reviewed-by: John L. Hammond Reviewed-by: Jinshan Xiong Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/include/lustre_net.h b/drivers/staging/lustre/lustre/include/lustre_net.h index 745adbb74cfc..7640e179e39d 100644 --- a/drivers/staging/lustre/lustre/include/lustre_net.h +++ b/drivers/staging/lustre/lustre/include/lustre_net.h @@ -264,6 +264,8 @@ #define LDLM_MAXREQSIZE (5 * 1024) #define LDLM_MAXREPSIZE (1024) +#define MDS_MAXREQSIZE (5 * 1024) /* >= 4736 */ + #define OST_MAXREQSIZE (5 * 1024) /* Macro to hide a typecast. */ diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c index 7fbc18e3e654..c391b60394e4 100644 --- a/drivers/staging/lustre/lustre/llite/dir.c +++ b/drivers/staging/lustre/lustre/llite/dir.c @@ -1804,6 +1804,11 @@ out_rmdir: /* Compute the whole struct size */ totalsize = hur_len(hur); OBD_FREE_PTR(hur); + + /* Final size will be more than double totalsize */ + if (totalsize >= MDS_MAXREQSIZE / 3) + return -E2BIG; + OBD_ALLOC_LARGE(hur, totalsize); if (hur == NULL) return -ENOMEM;