diff options
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/ext4.h | 1 | ||||
| -rw-r--r-- | fs/ext4/ioctl.c | 24 | ||||
| -rw-r--r-- | fs/ext4/super.c | 27 |
3 files changed, 35 insertions, 17 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 8104a21b001a..02fa8a64dc3f 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2968,6 +2968,7 @@ int ext4_fileattr_set(struct mnt_idmap *idmap, int ext4_fileattr_get(struct dentry *dentry, struct fileattr *fa); extern void ext4_reset_inode_seed(struct inode *inode); int ext4_update_overhead(struct super_block *sb, bool force); +int ext4_force_shutdown(struct super_block *sb, u32 flags); /* migrate.c */ extern int ext4_ext_migrate(struct inode *); diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index f9a430152063..961284cc9b65 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -793,16 +793,9 @@ static int ext4_ioctl_setproject(struct inode *inode, __u32 projid) } #endif -static int ext4_shutdown(struct super_block *sb, unsigned long arg) +int ext4_force_shutdown(struct super_block *sb, u32 flags) { struct ext4_sb_info *sbi = EXT4_SB(sb); - __u32 flags; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (get_user(flags, (__u32 __user *)arg)) - return -EFAULT; if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) return -EINVAL; @@ -838,6 +831,19 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg) return 0; } +static int ext4_ioctl_shutdown(struct super_block *sb, unsigned long arg) +{ + u32 flags; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (get_user(flags, (__u32 __user *)arg)) + return -EFAULT; + + return ext4_force_shutdown(sb, flags); +} + struct getfsmap_info { struct super_block *gi_sb; struct fsmap_head __user *gi_data; @@ -1566,7 +1572,7 @@ resizefs_out: return ext4_ioctl_get_es_cache(filp, arg); case EXT4_IOC_SHUTDOWN: - return ext4_shutdown(sb, arg); + return ext4_ioctl_shutdown(sb, arg); case FS_IOC_ENABLE_VERITY: if (!ext4_has_feature_verity(sb)) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 05fcecc36244..eaa5858d5285 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1096,6 +1096,15 @@ void ext4_update_dynamic_rev(struct super_block *sb) */ } +static void ext4_bdev_mark_dead(struct block_device *bdev) +{ + ext4_force_shutdown(bdev->bd_holder, EXT4_GOING_FLAGS_NOLOGFLUSH); +} + +static const struct blk_holder_ops ext4_holder_ops = { + .mark_dead = ext4_bdev_mark_dead, +}; + /* * Open the external journal device */ @@ -1103,7 +1112,8 @@ static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb) { struct block_device *bdev; - bdev = blkdev_get_by_dev(dev, FMODE_READ|FMODE_WRITE|FMODE_EXCL, sb); + bdev = blkdev_get_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_WRITE, sb, + &ext4_holder_ops); if (IS_ERR(bdev)) goto fail; return bdev; @@ -1118,17 +1128,12 @@ fail: /* * Release the journal device */ -static void ext4_blkdev_put(struct block_device *bdev) -{ - blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); -} - static void ext4_blkdev_remove(struct ext4_sb_info *sbi) { struct block_device *bdev; bdev = sbi->s_journal_bdev; if (bdev) { - ext4_blkdev_put(bdev); + blkdev_put(bdev, sbi->s_sb); sbi->s_journal_bdev = NULL; } } @@ -1449,6 +1454,11 @@ static void ext4_destroy_inode(struct inode *inode) EXT4_I(inode)->i_reserved_data_blocks); } +static void ext4_shutdown(struct super_block *sb) +{ + ext4_force_shutdown(sb, EXT4_GOING_FLAGS_NOLOGFLUSH); +} + static void init_once(void *foo) { struct ext4_inode_info *ei = foo; @@ -1609,6 +1619,7 @@ static const struct super_operations ext4_sops = { .unfreeze_fs = ext4_unfreeze, .statfs = ext4_statfs, .show_options = ext4_show_options, + .shutdown = ext4_shutdown, #ifdef CONFIG_QUOTA .quota_read = ext4_quota_read, .quota_write = ext4_quota_write, @@ -5899,7 +5910,7 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb, out_journal: jbd2_journal_destroy(journal); out_bdev: - ext4_blkdev_put(bdev); + blkdev_put(bdev, sb); return NULL; } |