[merged mm-stable] mm-damon-core-finish-kdamond-as-soon-as-any-callback-returns-an-error.patch removed from -mm tree

[merged mm-stable] mm-damon-core-finish-kdamond-as-soon-as-any-callback-returns-an-error.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/damon/core: finish kdamond as soon as any callback returns an error
has been removed from the -mm tree.  Its filename was
     mm-damon-core-finish-kdamond-as-soon-as-any-callback-returns-an-error.patch

This patch was dropped because it was merged into mm-stable

------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/core: finish kdamond as soon as any callback returns an error

When 'after_sampling()' or 'after_aggregation()' DAMON callbacks return an
error, kdamond continues the remaining loop once.  It makes no much sense
to run the remaining part while something wrong already happened.  The
context might be corrupted or having invalid data.  This commit therefore
makes kdamond skips the remaining works and immediately finish in the
cases.

Link: https://lkml.kernel.org/r/20220429160606.127307-3-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/damon/core.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/mm/damon/core.c~mm-damon-core-finish-kdamond-as-soon-as-any-callback-returns-an-error
+++ a/mm/damon/core.c
@@ -1089,8 +1089,10 @@ static int kdamond_fn(void *data)
 		if (ctx->ops.prepare_access_checks)
 			ctx->ops.prepare_access_checks(ctx);
 		if (ctx->callback.after_sampling &&
-				ctx->callback.after_sampling(ctx))
+				ctx->callback.after_sampling(ctx)) {
 			done = true;
+			continue;
+		}
 
 		kdamond_usleep(ctx->sample_interval);
 
@@ -1102,8 +1104,10 @@ static int kdamond_fn(void *data)
 					max_nr_accesses / 10,
 					sz_limit);
 			if (ctx->callback.after_aggregation &&
-					ctx->callback.after_aggregation(ctx))
+					ctx->callback.after_aggregation(ctx)) {
 				done = true;
+				continue;
+			}
 			kdamond_apply_schemes(ctx);
 			kdamond_reset_aggregated(ctx);
 			kdamond_split_regions(ctx);
_

Patches currently in -mm which might be from sj@kernel.org are