linux-kernel - [PATCH 3.4 66/92] UBI: return ENOSPC if no enough space available

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Message-Id: <1460976397-5688-66-git-send-email-lizf@kernel.org>
Date:	Mon, 18 Apr 2016 18:46:11 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, shengyong <shengyong1@...wei.com>,
	Richard Weinberger <richard@....at>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 66/92] UBI: return ENOSPC if no enough space available

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

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

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


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: Zefan Li <lizefan@...wei.com>
---
 drivers/mtd/ubi/vtbl.c | 1 +
 drivers/mtd/ubi/wl.c   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index c015fc0..4105a50 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -656,6 +656,7 @@ static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si,
 		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;
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 284d144..3e42cd6 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1513,6 +1513,7 @@ int ubi_wl_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
 		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;
-- 
1.9.1