linux-kernel - [PATCH] f2fs: make gc_urgent and gc_segment

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Date:   Fri, 18 Mar 2022 12:13:23 -0700
From:   Daeho Jeong <daeho43@...il.com>
To:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com
Cc:     Daeho Jeong <daehojeong@...gle.com>
Subject: [PATCH] f2fs: make gc_urgent and gc_segment_mode sysfs node readable

From: Daeho Jeong <daehojeong@...gle.com>

Changed a way of showing values of them to use strings.

Signed-off-by: Daeho Jeong <daehojeong@...gle.com>
---
 fs/f2fs/sysfs.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index fe29bcb70f46..fb950a13375f 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -41,6 +41,16 @@ enum {
 	ATGC_INFO,	/* struct atgc_management */
 };
 
+static const char *gc_mode_names[MAX_GC_MODE] = {
+	"GC_NORMAL",
+	"GC_IDLE_CB",
+	"GC_IDLE_GREEDY",
+	"GC_IDLE_AT",
+	"GC_URGENT_HIGH",
+	"GC_URGENT_LOW",
+	"GC_URGENT_MID"
+};
+
 struct f2fs_attr {
 	struct attribute attr;
 	ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
@@ -316,8 +326,13 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
 		return sysfs_emit(buf, "%u\n", sbi->compr_new_inode);
 #endif
 
+	if (!strcmp(a->attr.name, "gc_urgent"))
+		return sysfs_emit(buf, "%s\n",
+				gc_mode_names[sbi->gc_mode]);
+
 	if (!strcmp(a->attr.name, "gc_segment_mode"))
-		return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode);
+		return sysfs_emit(buf, "%s\n",
+				gc_mode_names[sbi->gc_segment_mode]);
 
 	if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
 		return sysfs_emit(buf, "%u\n",
-- 
2.35.1.894.gb6a874cedc-goog