From: wang di <di.w...@intel.com> Check whether getattr RPC can hold layout MD(RMF_MDT_MD), in case the client sends some invalid RPC, which can cause panic on MDT.
Client will retrieve cl_max_md_size/cl_default_md_size from MDS during mount process, so it will initialize cl_max_md_size/cl_default_md_size before sending getattr to MDS. Signed-off-by: wang di <di.w...@intel.com> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4222 Reviewed-on: http://review.whamcloud.com/8599 Reviewed-by: Fan Yong <fan.y...@intel.com> Reviewed-by: Andreas Dilger <andreas.dil...@intel.com> Signed-off-by: James Simmons <jsimm...@infradead.org> --- drivers/staging/lustre/lustre/llite/llite_lib.c | 2 +- drivers/staging/lustre/lustre/mdc/mdc_request.c | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c index 64be2c1..44dd3f3 100644 --- a/drivers/staging/lustre/lustre/llite/llite_lib.c +++ b/drivers/staging/lustre/lustre/llite/llite_lib.c @@ -445,7 +445,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, /* make root inode * XXX: move this to after cbd setup? */ - valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS; + valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE; if (sbi->ll_flags & LL_SBI_RMT_CLIENT) valid |= OBD_MD_FLRMTPERM; else if (sbi->ll_flags & LL_SBI_ACL) diff --git a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c index 46e3a7506..86b7445 100644 --- a/drivers/staging/lustre/lustre/mdc/mdc_request.c +++ b/drivers/staging/lustre/lustre/mdc/mdc_request.c @@ -142,9 +142,8 @@ static int mdc_getattr_common(struct obd_export *exp, CDEBUG(D_NET, "mode: %o\n", body->mode); + mdc_update_max_ea_from_body(exp, body); if (body->eadatasize != 0) { - mdc_update_max_ea_from_body(exp, body); - eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD, body->eadatasize); if (!eadata) -- 2.7.4 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
