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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-04-04 14:23:55 +0200 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-04-04 14:23:55 +0200 |
| commit | 837e5b8e0685e2e4974e5a86dfd7cbf5802e1422 (patch) | |
| tree | 1b4e116a20e6fdef01a1fc9ee7b46aeeecc23ed0 /fs/block_dev.c | |
| parent | 418f717cce5834203e24368717f542360b020681 (diff) | |
| parent | 61a4577c9a4419b99e647744923517d47255da35 (diff) | |
Merge tag 'v4.4.59' into toradex_vf_4.4-next
This is the 4.4.59 stable release
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 44d4a1e9244e..198aea66fe71 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -759,7 +759,7 @@ static bool bd_may_claim(struct block_device *bdev, struct block_device *whole, return true; /* already a holder */ else if (bdev->bd_holder != NULL) return false; /* held by someone else */ - else if (bdev->bd_contains == bdev) + else if (whole == bdev) return true; /* is a whole device which isn't held */ else if (whole->bd_holder == bd_may_claim) @@ -1806,6 +1806,7 @@ void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg) spin_lock(&blockdev_superblock->s_inode_list_lock); list_for_each_entry(inode, &blockdev_superblock->s_inodes, i_sb_list) { struct address_space *mapping = inode->i_mapping; + struct block_device *bdev; spin_lock(&inode->i_lock); if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW) || @@ -1826,8 +1827,12 @@ void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg) */ iput(old_inode); old_inode = inode; + bdev = I_BDEV(inode); - func(I_BDEV(inode), arg); + mutex_lock(&bdev->bd_mutex); + if (bdev->bd_openers) + func(bdev, arg); + mutex_unlock(&bdev->bd_mutex); spin_lock(&blockdev_superblock->s_inode_list_lock); } |