[lustre-devel] [PATCH 14/18] lustre: quota: nodemap squashed root cannot bypass quota

James Simmons jsimmons at infradead.org
Mon Jul 19 05:32:09 PDT 2021

From: Sebastien Buisson <sbuisson at ddn.com>

When root on client is squashed via a nodemap's squash_uid/squash_gid,
its IOs must not bypass quota enforcement as it normally does without
So on client side, do not set OBD_BRW_FROM_GRANT for every page being
used by root. And on server side, check if root is squashed via a
nodemap and remove OBD_BRW_NOQUOTA.

WC-bug-id: https://jira.whamcloud.com/browse/LU-14739
Lustre-commit: a4fbe7341baf12c00 ("LU-14739 quota: nodemap squashed root cannot bypass quota")
Signed-off-by: Sebastien Buisson <sbuisson at ddn.com>
Reviewed-on: https://review.whamcloud.com/43988
Reviewed-by: Andreas Dilger <adilger at whamcloud.com>
Reviewed-by: Wang Shilong <wshilong at whamcloud.com>
Reviewed-by: Oleg Drokin <green at whamcloud.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
 fs/lustre/osc/osc_cache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/lustre/osc/osc_cache.c b/fs/lustre/osc/osc_cache.c
index 84c6b68..50f6477 100644
--- a/fs/lustre/osc/osc_cache.c
+++ b/fs/lustre/osc/osc_cache.c
@@ -2380,7 +2380,7 @@ int osc_queue_async_io(const struct lu_env *env, struct cl_io *io,
 	/* check if the file's owner/group is over quota */
-	if (!(cmd & OBD_BRW_NOQUOTA)) {
+	if (!io->ci_noquota) {
 		struct cl_object *obj;
 		struct cl_attr *attr;
 		unsigned int qid[MAXQUOTAS];

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