linux-kernel - [PATCH 3.2 09/60] UBI: return ENOSPC if no enough space available

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Message-ID: <lsq.1447551945.378459383@decadent.org.uk>
Date:	Sun, 15 Nov 2015 01:45:45 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Richard Weinberger" <richard@....at>,
	"shengyong" <shengyong1@...wei.com>,
	"David Gstir" <david@...ma-star.at>
Subject: [PATCH 3.2 09/60] UBI: return ENOSPC if no enough space available

3.2.73-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: shengyong <shengyong1@...wei.com>

commit 7c7feb2ebfc9c0552c51f0c050db1d1a004faac5 upstream.

UBI: attaching mtd1 to ubi0
UBI: scanning is finished
UBI error: init_volumes: not enough PEBs, required 706, available 686
UBI error: ubi_wl_init: no enough physical eraseblocks (-20, need 1)
UBI error: ubi_attach_mtd_dev: failed to attach mtd1, error -12 <= NOT ENOMEM
UBI error: ubi_init: cannot attach mtd1

If available PEBs are not enough when initializing volumes, return -ENOSPC
directly. If available PEBs are not enough when initializing WL, return
-ENOSPC instead of -ENOMEM.

Signed-off-by: Sheng Yong <shengyong1@...wei.com>
Signed-off-by: Richard Weinberger <richard@....at>
Reviewed-by: David Gstir <david@...ma-star.at>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/mtd/ubi/vtbl.c | 1 +
 drivers/mtd/ubi/wl.c   | 1 +
 2 files changed, 2 insertions(+)

--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -656,6 +656,7 @@ static int init_volumes(struct ubi_devic
 		if (ubi->corr_peb_count)
 			ubi_err("%d PEBs are corrupted and not used",
 				ubi->corr_peb_count);
+		return -ENOSPC;
 	}
 	ubi->rsvd_pebs += reserved_pebs;
 	ubi->avail_pebs -= reserved_pebs;
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1512,6 +1512,7 @@ int ubi_wl_init_scan(struct ubi_device *
 		if (ubi->corr_peb_count)
 			ubi_err("%d PEBs are corrupted and not used",
 				ubi->corr_peb_count);
+		err = -ENOSPC;
 		goto out_free;
 	}
 	ubi->avail_pebs -= WL_RESERVED_PEBS;

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