kernel: backport the ubiblock patches from 3.14->3.10

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 41120

1 files changed, 176 insertions, 0 deletions

diff --git a/target/linux/generic/patches-3.10/552-ubifs-respect-silent-mount-flag.patch b/target/linux/generic/patches-3.10/552-ubifs-respect-silent-mount-flag.patch
new file mode 100644
index 0000000000..ab89b98705
--- /dev/null
+++ b/target/linux/generic/patches-3.10/552-ubifs-respect-silent-mount-flag.patch
@@ -0,0 +1,176 @@
+From 248b89b95d27659c5360ef5b68cca21d096ee909 Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Sat, 17 May 2014 03:16:54 +0200
+Subject: [PATCH 3/5] ubifs: respect MS_SILENT mount flag
+To: dedekind1@gmail.com,
+    linux-mtd@lists.infradead.org
+
+When attempting to mount a non-ubifs formatted volume, lots of error
+messages (including a stack dump) are thrown to the kernel log even if
+the MS_SILENT mount flag is set.
+Fix this by checking the MS_SILENT flag in ubifs_read_sb_node and
+passing it down to ubifs_read_node, which now got an additional
+parameter for that purpose.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ fs/ubifs/commit.c   |  4 ++--
+ fs/ubifs/io.c       | 23 ++++++++++++++---------
+ fs/ubifs/sb.c       |  5 +++--
+ fs/ubifs/tnc_misc.c |  4 ++--
+ fs/ubifs/ubifs.h    |  2 +-
+ 5 files changed, 22 insertions(+), 16 deletions(-)
+
+diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
+index ff82293..865d13f 100644
+--- a/fs/ubifs/commit.c
++++ b/fs/ubifs/commit.c
+@@ -542,7 +542,7 @@ int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot)
+ 	if (!idx)
+ 		return -ENOMEM;
+ 
+-	err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++	err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs, 0);
+ 	if (err)
+ 		goto out;
+ 
+@@ -610,7 +610,7 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
+ 		list_add_tail(&i->list, &list);
+ 		/* Read the index node */
+ 		idx = &i->idx;
+-		err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++		err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs, 0);
+ 		if (err)
+ 			goto out_free;
+ 		/* Validate index node */
+diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
+index e18b988..51c4072 100644
+--- a/fs/ubifs/io.c
++++ b/fs/ubifs/io.c
+@@ -912,7 +912,7 @@ int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len,
+ 	if (!overlap) {
+ 		/* We may safely unlock the write-buffer and read the data */
+ 		spin_unlock(&wbuf->lock);
+-		return ubifs_read_node(c, buf, type, len, lnum, offs);
++		return ubifs_read_node(c, buf, type, len, lnum, offs, 0);
+ 	}
+ 
+ 	/* Don't read under wbuf */
+@@ -966,13 +966,14 @@ out:
+  * @len: node length (not aligned)
+  * @lnum: logical eraseblock number
+  * @offs: offset within the logical eraseblock
++ * @silent: suppress error messages
+  *
+  * This function reads a node of known type and and length, checks it and
+  * stores in @buf. Returns zero in case of success, %-EUCLEAN if CRC mismatched
+  * and a negative error code in case of failure.
+  */
+ int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len,
+-		    int lnum, int offs)
++		    int lnum, int offs, int silent)
+ {
+ 	int err, l;
+ 	struct ubifs_ch *ch = buf;
+@@ -988,30 +989,34 @@ int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len,
+ 		return err;
+ 
+ 	if (type != ch->node_type) {
+-		ubifs_err("bad node type (%d but expected %d)",
++		if (!silent) ubifs_err("bad node type (%d but expected %d)",
+ 			  ch->node_type, type);
+ 		goto out;
+ 	}
+ 
+ 	err = ubifs_check_node(c, buf, lnum, offs, 0, 0);
+ 	if (err) {
+-		ubifs_err("expected node type %d", type);
++		if (!silent)
++			ubifs_err("expected node type %d", type);
+ 		return err;
+ 	}
+ 
+ 	l = le32_to_cpu(ch->len);
+ 	if (l != len) {
+-		ubifs_err("bad node length %d, expected %d", l, len);
++		if (!silent)
++			ubifs_err("bad node length %d, expected %d", l, len);
+ 		goto out;
+ 	}
+ 
+ 	return 0;
+ 
+ out:
+-	ubifs_err("bad node at LEB %d:%d, LEB mapping status %d", lnum, offs,
+-		  ubi_is_mapped(c->ubi, lnum));
+-	ubifs_dump_node(c, buf);
+-	dump_stack();
++	if (!silent) {
++		ubifs_err("bad node at LEB %d:%d, LEB mapping status %d", lnum,
++			  offs, ubi_is_mapped(c->ubi, lnum));
++		ubifs_dump_node(c, buf);
++		dump_stack();
++	}
+ 	return -EINVAL;
+ }
+ 
+diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
+index 4c37607..b46847d 100644
+--- a/fs/ubifs/sb.c
++++ b/fs/ubifs/sb.c
+@@ -482,14 +482,15 @@ failed:
+ struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c)
+ {
+ 	struct ubifs_sb_node *sup;
+-	int err;
++	int silent, err;
+ 
+ 	sup = kmalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_NOFS);
+ 	if (!sup)
+ 		return ERR_PTR(-ENOMEM);
+ 
++	silent = !!(c->vfs_sb->s_flags & MS_SILENT);
+ 	err = ubifs_read_node(c, sup, UBIFS_SB_NODE, UBIFS_SB_NODE_SZ,
+-			      UBIFS_SB_LNUM, 0);
++			      UBIFS_SB_LNUM, 0, silent);
+ 	if (err) {
+ 		kfree(sup);
+ 		return ERR_PTR(err);
+diff --git a/fs/ubifs/tnc_misc.c b/fs/ubifs/tnc_misc.c
+index f6bf899..e128689 100644
+--- a/fs/ubifs/tnc_misc.c
++++ b/fs/ubifs/tnc_misc.c
+@@ -280,7 +280,7 @@ static int read_znode(struct ubifs_info *c, int lnum, int offs, int len,
+ 	if (!idx)
+ 		return -ENOMEM;
+ 
+-	err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++	err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs, 0);
+ 	if (err < 0) {
+ 		kfree(idx);
+ 		return err;
+@@ -472,7 +472,7 @@ int ubifs_tnc_read_node(struct ubifs_info *c, struct ubifs_zbranch *zbr,
+ 					   zbr->lnum, zbr->offs);
+ 	else
+ 		err = ubifs_read_node(c, node, type, zbr->len, zbr->lnum,
+-				      zbr->offs);
++				      zbr->offs, 0);
+ 
+ 	if (err) {
+ 		dbg_tnck(key, "key ");
+diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
+index e8c8cfe..85fdd11 100644
+--- a/fs/ubifs/ubifs.h
++++ b/fs/ubifs/ubifs.h
+@@ -1481,7 +1481,7 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len);
+ int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs);
+ int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf);
+ int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len,
+-		    int lnum, int offs);
++		    int lnum, int offs, int silent);
+ int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len,
+ 			 int lnum, int offs);
+ int ubifs_write_node(struct ubifs_info *c, void *node, int len, int lnum,
+-- 
+1.9.2
+