diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig
index 378c221d68a9..248e75aabcc8 100644
--- a/fs/f2fs/Kconfig
+++ b/fs/f2fs/Kconfig
@@ -29,6 +29,19 @@ config F2FS_STAT_FS
        - average SIT information about whole segments
        - current memory footprint consumed by f2fs.

+config F2FS_POWER_AWARE
+   bool "Power source awareness for F2FS background GC"
+   depends on POWER_SUPPLY
+   default n
+   help
+     Enable F2FS background GC only when external power source is
+     connected for portable devices.
+
+     Enabling this won't cause any functional difference for systems
+     without battery.
+
+     If unsure, say N.
+
 config F2FS_FS_XATTR
    bool "F2FS extended attributes"
    depends on F2FS_FS
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 629c57024106..209c5afc59ce 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -328,8 +328,13 @@ static int stat_show(struct seq_file *s, void *v)
               si->prefree_count, si->free_segs, si->free_secs);
        seq_printf(s, "CP calls: %d (BG: %d)\n",
                si->cp_count, si->bg_cp_count);
-       seq_printf(s, "GC calls: %d (BG: %d)\n",
+       seq_printf(s, "GC calls: %d (BG: %d)",
               si->call_count, si->bg_gc);
+#ifdef CONFIG_F2FS_POWER_AWARE
+       if (power_supply_is_system_supplied() == 0)
+           seq_puts(s, " (No external power source - BG disabled)");
+#endif
+       seq_puts(s, "\n");
        seq_printf(s, "  - data segments : %d (%d)\n",
                si->data_segs, si->bg_data_segs);
        seq_printf(s, "  - node segments : %d (%d)\n",
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 8907042ea571..e0e0777e2afb 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -30,6 +30,9 @@
 #endif
 #include <crypto/hash.h>
 #include <linux/writeback.h>
+#ifdef CONFIG_F2FS_POWER_AWARE
+#include <linux/power_supply.h>
+#endif

 #ifdef CONFIG_F2FS_CHECK_FS
 #define f2fs_bug_on(sbi, condition)    BUG_ON(condition)
@@ -1202,6 +1205,12 @@ static inline bool is_idle(struct f2fs_sb_info *sbi)
    if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
        return 0;

+#ifdef CONFIG_F2FS_POWER_AWARE
+   /* >0 : AC; 0 : battery; <0 : error */
+   if (power_supply_is_system_supplied() == 0)
+       return 0;
+#endif
+
    return f2fs_time_over(sbi, REQ_TIME);
 }