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btrfs-progs: zoned: reset zone of freed block group 

When freeing a chunk, we can/should reset the underlying device zones
for the chunk. Introduce btrfs_reset_chunk_zones() and reset the zones.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2021-04-26 15:27:32 +09:00 committed by David Sterba
parent 869d9ee552
commit 5fd9956f63
3 changed files with 44 additions and 0 deletions
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9
kernel-shared/extent-tree.c
View File

@ -21,6 +21,7 @@
#include <stdint.h>
#include <math.h>
#include "kerncompat.h"
#include "kernel-lib/list.h"
#include "kernel-lib/radix-tree.h"
#include "kernel-lib/rbtree.h"
#include "kernel-shared/ctree.h"
@ -3013,6 +3014,14 @@ static int free_chunk_dev_extent_items(struct btrfs_trans_handle *trans,
struct btrfs_chunk);
num_stripes = btrfs_chunk_num_stripes(path->nodes[0], chunk);
for (i = 0; i < num_stripes; i++) {
u64 devid = btrfs_stripe_devid_nr(path->nodes[0], chunk, i);
u64 offset = btrfs_stripe_offset_nr(path->nodes[0], chunk, i);
u64 length = btrfs_stripe_length(fs_info, path->nodes[0], chunk);
ret = btrfs_reset_chunk_zones(fs_info, devid, offset, length);
if (ret < 0)
goto out;
ret = free_dev_extent_item(trans, fs_info,
btrfs_stripe_devid_nr(path->nodes[0], chunk, i),
btrfs_stripe_offset_nr(path->nodes[0], chunk, i));

27
kernel-shared/zoned.c
View File

@ -881,6 +881,33 @@ bool btrfs_redirty_extent_buffer_for_zoned(struct btrfs_fs_info *fs_info,
return false;
}
int btrfs_reset_chunk_zones(struct btrfs_fs_info *fs_info, u64 devid,
u64 offset, u64 length)
{
struct btrfs_device *device;
list_for_each_entry(device, &fs_info->fs_devices->devices, dev_list) {
struct btrfs_zoned_device_info *zinfo;
struct blk_zone *reset;
if (device->devid != devid)
continue;
zinfo = device->zone_info;
if (!zone_is_sequential(zinfo, offset))
continue;
reset = &zinfo->zones[offset / zinfo->zone_size];
if (btrfs_reset_dev_zone(device->fd, reset)) {
error("zoned: failed to reset zone %llu: %m",
offset / zinfo->zone_size);
return -EIO;
}
}
return 0;
}
#endif
int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)

8
kernel-shared/zoned.h
View File

@ -92,6 +92,8 @@ int btrfs_load_block_group_zone_info(struct btrfs_fs_info *fs_info,
struct btrfs_block_group *cache);
bool btrfs_redirty_extent_buffer_for_zoned(struct btrfs_fs_info *fs_info,
u64 start, u64 end);
int btrfs_reset_chunk_zones(struct btrfs_fs_info *fs_info, u64 devid,
u64 offset, u64 length);
#else
@ -135,6 +137,12 @@ static inline bool btrfs_redirty_extent_buffer_for_zoned(
return false;
}
static inline int btrfs_reset_chunk_zones(struct btrfs_fs_info *fs_info,
u64 devid, u64 offset, u64 length)
{
return 0;
}
#endif /* BTRFS_ZONED */
static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)