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-rw-r--r--MAINTAINERS4
-rw-r--r--drivers/mtd/ubi/kapi.c40
-rw-r--r--drivers/mtd/ubi/upd.c20
-rw-r--r--fs/ubifs/debug.c2
-rw-r--r--fs/ubifs/file.c13
-rw-r--r--fs/ubifs/super.c20
-rw-r--r--include/linux/mtd/ubi.h2
7 files changed, 72 insertions, 29 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 746b706206d..d7f8668b7a7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5335,7 +5335,7 @@ S: Maintained
F: drivers/scsi/u14-34f.c
UBI FILE SYSTEM (UBIFS)
-M: Artem Bityutskiy <dedekind@infradead.org>
+M: Artem Bityutskiy <dedekind1@gmail.com>
M: Adrian Hunter <adrian.hunter@nokia.com>
L: linux-mtd@lists.infradead.org
T: git git://git.infradead.org/ubifs-2.6.git
@@ -5386,7 +5386,7 @@ F: drivers/cdrom/cdrom.c
F: include/linux/cdrom.h
UNSORTED BLOCK IMAGES (UBI)
-M: Artem Bityutskiy <dedekind@infradead.org>
+M: Artem Bityutskiy <dedekind1@gmail.com>
W: http://www.linux-mtd.infradead.org/
L: linux-mtd@lists.infradead.org
T: git git://git.infradead.org/ubi-2.6.git
diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index 88a72e9c8be..277786ebaa2 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -22,6 +22,8 @@
#include <linux/module.h>
#include <linux/err.h>
+#include <linux/namei.h>
+#include <linux/fs.h>
#include <asm/div64.h>
#include "ubi.h"
@@ -280,6 +282,44 @@ struct ubi_volume_desc *ubi_open_volume_nm(int ubi_num, const char *name,
EXPORT_SYMBOL_GPL(ubi_open_volume_nm);
/**
+ * ubi_open_volume_path - open UBI volume by its character device node path.
+ * @pathname: volume character device node path
+ * @mode: open mode
+ *
+ * This function is similar to 'ubi_open_volume()', but opens a volume the path
+ * to its character device node.
+ */
+struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode)
+{
+ int error, ubi_num, vol_id;
+ struct ubi_volume_desc *ret;
+ struct inode *inode;
+ struct path path;
+
+ dbg_gen("open volume %s, mode %d", pathname, mode);
+
+ if (!pathname || !*pathname)
+ return ERR_PTR(-EINVAL);
+
+ error = kern_path(pathname, LOOKUP_FOLLOW, &path);
+ if (error)
+ return ERR_PTR(error);
+
+ inode = path.dentry->d_inode;
+ ubi_num = ubi_major2num(imajor(inode));
+ vol_id = iminor(inode) - 1;
+
+ if (vol_id >= 0 && ubi_num >= 0)
+ ret = ubi_open_volume(ubi_num, vol_id, mode);
+ else
+ ret = ERR_PTR(-ENODEV);
+
+ path_put(&path);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ubi_open_volume_path);
+
+/**
* ubi_close_volume - close UBI volume.
* @desc: volume descriptor
*/
diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c
index 74fdc40c862..c1d7b880c79 100644
--- a/drivers/mtd/ubi/upd.c
+++ b/drivers/mtd/ubi/upd.c
@@ -147,12 +147,14 @@ int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol,
}
if (bytes == 0) {
+ err = ubi_wl_flush(ubi);
+ if (err)
+ return err;
+
err = clear_update_marker(ubi, vol, 0);
if (err)
return err;
- err = ubi_wl_flush(ubi);
- if (!err)
- vol->updating = 0;
+ vol->updating = 0;
}
vol->upd_buf = vmalloc(ubi->leb_size);
@@ -362,16 +364,16 @@ int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol,
ubi_assert(vol->upd_received <= vol->upd_bytes);
if (vol->upd_received == vol->upd_bytes) {
+ err = ubi_wl_flush(ubi);
+ if (err)
+ return err;
/* The update is finished, clear the update marker */
err = clear_update_marker(ubi, vol, vol->upd_bytes);
if (err)
return err;
- err = ubi_wl_flush(ubi);
- if (err == 0) {
- vol->updating = 0;
- err = to_write;
- vfree(vol->upd_buf);
- }
+ vol->updating = 0;
+ err = to_write;
+ vfree(vol->upd_buf);
}
return err;
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index dbc093afd94..8a771c59ac3 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2014,7 +2014,7 @@ static int check_leaf(struct ubifs_info *c, struct ubifs_zbranch *zbr,
inum = key_inum_flash(c, &dent->key);
fscki1 = read_add_inode(c, priv, inum);
if (IS_ERR(fscki1)) {
- err = PTR_ERR(fscki);
+ err = PTR_ERR(fscki1);
ubifs_err("error %d while processing entry node and "
"trying to find parent inode node %lu",
err, (unsigned long)inum);
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 1009adc8d60..39849f887e7 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1389,7 +1389,6 @@ static ssize_t ubifs_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
int err;
- ssize_t ret;
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct ubifs_info *c = inode->i_sb->s_fs_info;
@@ -1397,17 +1396,7 @@ static ssize_t ubifs_aio_write(struct kiocb *iocb, const struct iovec *iov,
if (err)
return err;
- ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
- if (ret < 0)
- return ret;
-
- if (ret > 0 && (IS_SYNC(inode) || iocb->ki_filp->f_flags & O_SYNC)) {
- err = ubifs_sync_wbufs_by_inode(c, inode);
- if (err)
- return err;
- }
-
- return ret;
+ return generic_file_aio_write(iocb, iov, nr_segs, pos);
}
static int ubifs_set_page_dirty(struct page *page)
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 333e181ee98..943ad562453 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1842,22 +1842,32 @@ const struct super_operations ubifs_super_operations = {
* @name: UBI volume name
* @mode: UBI volume open mode
*
- * There are several ways to specify UBI volumes when mounting UBIFS:
- * o ubiX_Y - UBI device number X, volume Y;
- * o ubiY - UBI device number 0, volume Y;
+ * The primary method of mounting UBIFS is by specifying the UBI volume
+ * character device node path. However, UBIFS may also be mounted withoug any
+ * character device node using one of the following methods:
+ *
+ * o ubiX_Y - mount UBI device number X, volume Y;
+ * o ubiY - mount UBI device number 0, volume Y;
* o ubiX:NAME - mount UBI device X, volume with name NAME;
* o ubi:NAME - mount UBI device 0, volume with name NAME.
*
* Alternative '!' separator may be used instead of ':' (because some shells
* like busybox may interpret ':' as an NFS host name separator). This function
- * returns ubi volume object in case of success and a negative error code in
- * case of failure.
+ * returns UBI volume description object in case of success and a negative
+ * error code in case of failure.
*/
static struct ubi_volume_desc *open_ubi(const char *name, int mode)
{
+ struct ubi_volume_desc *ubi;
int dev, vol;
char *endptr;
+ /* First, try to open using the device node path method */
+ ubi = ubi_open_volume_path(name, mode);
+ if (!IS_ERR(ubi))
+ return ubi;
+
+ /* Try the "nodev" method */
if (name[0] != 'u' || name[1] != 'b' || name[2] != 'i')
return ERR_PTR(-EINVAL);
diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h
index 6913b71d9ab..b31bd9e9bca 100644
--- a/include/linux/mtd/ubi.h
+++ b/include/linux/mtd/ubi.h
@@ -174,6 +174,8 @@ void ubi_get_volume_info(struct ubi_volume_desc *desc,
struct ubi_volume_desc *ubi_open_volume(int ubi_num, int vol_id, int mode);
struct ubi_volume_desc *ubi_open_volume_nm(int ubi_num, const char *name,
int mode);
+struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode);
+
int ubi_register_volume_notifier(struct notifier_block *nb,
int ignore_existing);
int ubi_unregister_volume_notifier(struct notifier_block *nb);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 12:50:46 +0000