diff options
| -rw-r--r-- | drivers/mtd/devices/block2mtd.c | 4 | ||||
| -rw-r--r-- | fs/block_dev.c | 24 | ||||
| -rw-r--r-- | fs/reiserfs/journal.c | 3 | ||||
| -rw-r--r-- | fs/super.c | 14 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_super.c | 4 | ||||
| -rw-r--r-- | include/linux/fs.h | 6 |
6 files changed, 31 insertions, 24 deletions
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 91fbba76763..8c295f40d2a 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -224,7 +224,7 @@ static void block2mtd_free_device(struct block2mtd_dev *dev) if (dev->blkdev) { invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping, 0, -1); - close_bdev_excl(dev->blkdev); + close_bdev_exclusive(dev->blkdev, FMODE_READ|FMODE_WRITE); } kfree(dev); @@ -246,7 +246,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size) return NULL; /* Get a handle on the device */ - bdev = open_bdev_excl(devname, O_RDWR, NULL); + bdev = open_bdev_exclusive(devname, FMODE_READ|FMODE_WRITE, NULL); #ifndef MODULE if (IS_ERR(bdev)) { diff --git a/fs/block_dev.c b/fs/block_dev.c index 05131baf3cf..4b595904cef 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1309,32 +1309,29 @@ fail: EXPORT_SYMBOL(lookup_bdev); /** - * open_bdev_excl - open a block device by name and set it up for use + * open_bdev_exclusive - open a block device by name and set it up for use * * @path: special file representing the block device - * @flags: %MS_RDONLY for opening read-only + * @mode: FMODE_... combination to pass be used * @holder: owner for exclusion * * Open the blockdevice described by the special file at @path, claim it * for the @holder. */ -struct block_device *open_bdev_excl(const char *path, int flags, void *holder) +struct block_device *open_bdev_exclusive(const char *path, fmode_t mode, void *holder) { struct block_device *bdev; - fmode_t mode = FMODE_READ; int error = 0; bdev = lookup_bdev(path); if (IS_ERR(bdev)) return bdev; - if (!(flags & MS_RDONLY)) - mode |= FMODE_WRITE; error = blkdev_get(bdev, mode, 0); if (error) return ERR_PTR(error); error = -EACCES; - if (!(flags & MS_RDONLY) && bdev_read_only(bdev)) + if ((mode & FMODE_WRITE) && bdev_read_only(bdev)) goto blkdev_put; error = bd_claim(bdev, holder); if (error) @@ -1347,22 +1344,23 @@ blkdev_put: return ERR_PTR(error); } -EXPORT_SYMBOL(open_bdev_excl); +EXPORT_SYMBOL(open_bdev_exclusive); /** - * close_bdev_excl - release a blockdevice openen by open_bdev_excl() + * close_bdev_exclusive - close a blockdevice opened by open_bdev_exclusive() * * @bdev: blockdevice to close + * @mode: mode, must match that used to open. * - * This is the counterpart to open_bdev_excl(). + * This is the counterpart to open_bdev_exclusive(). */ -void close_bdev_excl(struct block_device *bdev) +void close_bdev_exclusive(struct block_device *bdev, fmode_t mode) { bd_release(bdev); - blkdev_put(bdev, 0); /* move up in the next patches */ + blkdev_put(bdev, mode); } -EXPORT_SYMBOL(close_bdev_excl); +EXPORT_SYMBOL(close_bdev_exclusive); int __invalidate_device(struct block_device *bdev) { diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 3261518478f..70b89607667 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -2628,7 +2628,8 @@ static int journal_init_dev(struct super_block *super, return 0; } - journal->j_dev_bd = open_bdev_excl(jdev_name, 0, journal); + journal->j_dev_bd = open_bdev_exclusive(jdev_name, + FMODE_READ|FMODE_WRITE, journal); if (IS_ERR(journal->j_dev_bd)) { result = PTR_ERR(journal->j_dev_bd); journal->j_dev_bd = NULL; diff --git a/fs/super.c b/fs/super.c index e931ae9511f..0d77ac20d03 100644 --- a/fs/super.c +++ b/fs/super.c @@ -760,9 +760,13 @@ int get_sb_bdev(struct file_system_type *fs_type, { struct block_device *bdev; struct super_block *s; + fmode_t mode = FMODE_READ; int error = 0; - bdev = open_bdev_excl(dev_name, flags, fs_type); + if (!(flags & MS_RDONLY)) + mode |= FMODE_WRITE; + + bdev = open_bdev_exclusive(dev_name, mode, fs_type); if (IS_ERR(bdev)) return PTR_ERR(bdev); @@ -785,11 +789,12 @@ int get_sb_bdev(struct file_system_type *fs_type, goto error_bdev; } - close_bdev_excl(bdev); + close_bdev_exclusive(bdev, mode); } else { char b[BDEVNAME_SIZE]; s->s_flags = flags; + s->s_mode = mode; strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id)); sb_set_blocksize(s, block_size(bdev)); error = fill_super(s, data, flags & MS_SILENT ? 1 : 0); @@ -807,7 +812,7 @@ int get_sb_bdev(struct file_system_type *fs_type, error_s: error = PTR_ERR(s); error_bdev: - close_bdev_excl(bdev); + close_bdev_exclusive(bdev, mode); error: return error; } @@ -817,10 +822,11 @@ EXPORT_SYMBOL(get_sb_bdev); void kill_block_super(struct super_block *sb) { struct block_device *bdev = sb->s_bdev; + fmode_t mode = sb->s_mode; generic_shutdown_super(sb); sync_blockdev(bdev); - close_bdev_excl(bdev); + close_bdev_exclusive(bdev, mode); } EXPORT_SYMBOL(kill_block_super); diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index e39013619b2..37ebe36056e 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -589,7 +589,7 @@ xfs_blkdev_get( { int error = 0; - *bdevp = open_bdev_excl(name, 0, mp); + *bdevp = open_bdev_exclusive(name, FMODE_READ|FMODE_WRITE, mp); if (IS_ERR(*bdevp)) { error = PTR_ERR(*bdevp); printk("XFS: Invalid device [%s], error=%d\n", name, error); @@ -603,7 +603,7 @@ xfs_blkdev_put( struct block_device *bdev) { if (bdev) - close_bdev_excl(bdev); + close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); } /* diff --git a/include/linux/fs.h b/include/linux/fs.h index 04c8dc41f45..c6766314dc5 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1157,6 +1157,7 @@ struct super_block { char s_id[32]; /* Informational name */ void *s_fs_info; /* Filesystem private info */ + fmode_t s_mode; /* * The next field is for VFS *only*. No filesystems have any business @@ -1753,9 +1754,10 @@ extern void chrdev_show(struct seq_file *,off_t); extern const char *__bdevname(dev_t, char *buffer); extern const char *bdevname(struct block_device *bdev, char *buffer); extern struct block_device *lookup_bdev(const char *); -extern struct block_device *open_bdev_excl(const char *, int, void *); -extern void close_bdev_excl(struct block_device *); +extern struct block_device *open_bdev_exclusive(const char *, fmode_t, void *); +extern void close_bdev_exclusive(struct block_device *, fmode_t); extern void blkdev_show(struct seq_file *,off_t); + #else #define BLKDEV_MAJOR_HASH_SIZE 0 #endif |