diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/generic-2.6/patches-2.6.27/065-rootfs_split.patch | 171 |
1 files changed, 83 insertions, 88 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.27/065-rootfs_split.patch b/target/linux/generic-2.6/patches-2.6.27/065-rootfs_split.patch index aff95cc..6fb86b9 100644 --- a/target/linux/generic-2.6/patches-2.6.27/065-rootfs_split.patch +++ b/target/linux/generic-2.6/patches-2.6.27/065-rootfs_split.patch @@ -373,7 +373,7 @@ return err; } -@@ -210,7 +246,12 @@ static int block2mtd_write(struct mtd_in +@@ -210,32 +246,109 @@ static int block2mtd_write(struct mtd_info *mtd, loff_t to, size_t len, static void block2mtd_sync(struct mtd_info *mtd) { struct block2mtd_dev *dev = mtd->priv; @@ -387,74 +387,37 @@ return; } -@@ -288,47 +288,17 @@ static void block2mtd_sync(struct mtd_info *mtd) - } - --static void block2mtd_free_device(struct block2mtd_dev *dev) --{ -- if (!dev) -- return; -- -- kfree(dev->mtd.name); -- -- if (dev->blkdev) { -- invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping, -- 0, -1); -- close_bdev_excl(dev->blkdev); -- } -- -- kfree(dev); --} -- -- --/* FIXME: ensure that mtd->size % erase_size == 0 */ --static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname) +static int _open_bdev(struct block2mtd_dev *dev) - { - struct block_device *bdev; -- struct block2mtd_dev *dev; -- struct mtd_partition *part; -- char *name; - -- if (!devname) -- return NULL; -- -- dev = kzalloc(sizeof(struct block2mtd_dev), GFP_KERNEL); -- if (!dev) -- return NULL; -- - /* Get a handle on the device */ -- bdev = open_bdev_excl(devname, O_RDWR, NULL); ++{ ++ struct block_device *bdev; ++ ++ /* Get a handle on the device */ + bdev = open_bdev_excl(dev->devname, O_RDWR, NULL); - #ifndef MODULE - if (IS_ERR(bdev)) { - - /* We might not have rootfs mounted at this point. Try - to resolve the device name by other means. */ - -- dev_t devt = name_to_dev_t(devname); ++#ifndef MODULE ++ if (IS_ERR(bdev)) { ++ ++ /* We might not have rootfs mounted at this point. Try ++ to resolve the device name by other means. */ ++ + dev_t devt = name_to_dev_t(dev->devname); - if (devt) { - bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ); - } -@@ -263,17 +295,97 @@ static struct block2mtd_dev *add_device( - #endif - - if (IS_ERR(bdev)) { -- ERROR("error: cannot open device %s", devname); -- goto devinit_err; ++ if (devt) { ++ bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ); ++ } ++ } ++#endif ++ ++ if (IS_ERR(bdev)) { + ERROR("error: cannot open device %s", dev->devname); + return 1; - } - dev->blkdev = bdev; - - if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) { - ERROR("attempting to use an MTD device as a block device"); -- goto devinit_err; ++ } ++ dev->blkdev = bdev; ++ ++ if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) { ++ ERROR("attempting to use an MTD device as a block device"); + return 1; - } - ++ } ++ + return 0; +} + @@ -471,12 +434,12 @@ + dev->blkdev = NULL; +} + -+static void block2mtd_free_device(struct block2mtd_dev *dev) -+{ -+ if (!dev) -+ return; -+ -+ kfree(dev->mtd.name); + static void block2mtd_free_device(struct block2mtd_dev *dev) + { + if (!dev) + return; + + kfree(dev->mtd.name); + _close_bdev(dev); + kfree(dev); +} @@ -494,7 +457,11 @@ + + /* get the device number for the whole disk */ + devt = MKDEV(MAJOR(dev->blkdev->bd_dev), 0); -+ + +- if (dev->blkdev) { +- invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping, +- 0, -1); +- close_bdev_excl(dev->blkdev); + /* close the old block device */ + _close_bdev(dev); + @@ -504,36 +471,64 @@ + err = -EINVAL; + else { + err = rescan_partitions(bdev->bd_disk, bdev); -+ } + } + if (bdev) + close_bdev_excl(bdev); -+ + +- kfree(dev); +-} + /* try to open the partition block device again */ + _open_bdev(dev); + write_unlock(&dev->bdev_mutex); -+ + + return err; +} -+ -+/* FIXME: ensure that mtd->size % erase_size == 0 */ + + /* FIXME: ensure that mtd->size % erase_size == 0 */ +-static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname) +static struct block2mtd_dev *add_device(char *devname, int erase_size, char *mtdname) -+{ -+ struct block2mtd_dev *dev; -+ struct mtd_partition *part; -+ char *name; -+ -+ if (!devname) -+ return NULL; -+ + { +- struct block_device *bdev; + struct block2mtd_dev *dev; + struct mtd_partition *part; + char *name; +@@ -243,37 +356,17 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size, const cha + if (!devname) + return NULL; + +- dev = kzalloc(sizeof(struct block2mtd_dev), GFP_KERNEL); + dev = kzalloc(sizeof(struct block2mtd_dev) + strlen(devname) + 1, GFP_KERNEL); -+ if (!dev) -+ return NULL; -+ + if (!dev) + return NULL; + +- /* Get a handle on the device */ +- bdev = open_bdev_excl(devname, O_RDWR, NULL); +-#ifndef MODULE +- if (IS_ERR(bdev)) { +- +- /* We might not have rootfs mounted at this point. Try +- to resolve the device name by other means. */ + strcpy(dev->devname, devname); -+ + +- dev_t devt = name_to_dev_t(devname); +- if (devt) { +- bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ); +- } +- } +-#endif +- +- if (IS_ERR(bdev)) { +- ERROR("error: cannot open device %s", devname); + if (_open_bdev(dev)) -+ goto devinit_err; -+ + goto devinit_err; +- } +- dev->blkdev = bdev; +- +- if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) { +- ERROR("attempting to use an MTD device as a block device"); +- goto devinit_err; +- } + mutex_init(&dev->write_mutex); + rwlock_init(&dev->bdev_mutex); |