diff options
| author | Christian Brauner <brauner@kernel.org> | 2023-09-27 15:21:16 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-11-18 14:59:23 +0100 |
| commit | 49ef8832fb1a9e0da0020eb17480fd286433bc13 (patch) | |
| tree | d7163fa4aa3f1017912bf6bf03682321ff03af81 /include | |
| parent | a30561a9be69d446d8d542a4f9735fe5ca9573df (diff) | |
| download | lwn-49ef8832fb1a9e0da0020eb17480fd286433bc13.tar.gz lwn-49ef8832fb1a9e0da0020eb17480fd286433bc13.zip | |
bdev: implement freeze and thaw holder operations
The old method of implementing block device freeze and thaw operations
required us to rely on get_active_super() to walk the list of all
superblocks on the system to find any superblock that might use the
block device. This is wasteful and not very pleasant overall.
Now that we can finally go straight from block device to owning
superblock things become way simpler.
Link: https://lore.kernel.org/r/20231024-vfs-super-freeze-v2-5-599c19f4faac@kernel.org
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blk_types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index d5c5e59ddbd2..88e1848b0869 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -57,7 +57,7 @@ struct block_device { const struct blk_holder_ops *bd_holder_ops; struct mutex bd_holder_lock; /* The counter of freeze processes */ - int bd_fsfreeze_count; + atomic_t bd_fsfreeze_count; int bd_holders; struct kobject *bd_holder_dir; |