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btrfs: add and fix comments in btrfs_fs_devices

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Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2023-05-24 20:02:43 +08:00 committed by David Sterba
parent 25984a5ae8
commit d85512d54e
1 changed files with 11 additions and 14 deletions
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25
fs/btrfs/volumes.h
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@ -330,34 +330,31 @@ struct btrfs_fs_devices {
*/
struct btrfs_device *latest_dev;
/* all of the devices in the FS, protected by a mutex
* so we can safely walk it to write out the supers without
* worrying about add/remove by the multi-device code.
* Scrubbing super can kick off supers writing by holding
* this mutex lock.
/*
* All of the devices in the filesystem, protected by a mutex so we can
* safely walk it to write out the super blocks without worrying about
* adding/removing by the multi-device code. Scrubbing super block can
* kick off supers writing by holding this mutex lock.
*/
struct mutex device_list_mutex;
/* List of all devices, protected by device_list_mutex */
struct list_head devices;
/*
* Devices which can satisfy space allocation. Protected by
* chunk_mutex
*/
/* Devices which can satisfy space allocation. Protected by * chunk_mutex. */
struct list_head alloc_list;
struct list_head seed_list;
/* Count fs-devices opened. */
int opened;
/* set when we find or add a device that doesn't have the
* nonrot flag set
*/
/* Set when we find or add a device that doesn't have the nonrot flag set. */
bool rotating;
/* Devices support TRIM/discard commands */
/* Devices support TRIM/discard commands. */
bool discardable;
bool fsid_change;
/* The filesystem is a seed filesystem. */
bool seeding;
struct btrfs_fs_info *fs_info;
@ -369,7 +366,7 @@ struct btrfs_fs_devices {
enum btrfs_chunk_allocation_policy chunk_alloc_policy;
/* Policy used to read the mirrored stripes */
/* Policy used to read the mirrored stripes. */
enum btrfs_read_policy read_policy;
};