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btrfs: remove unused argument seed from btrfs_find_device

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Commit 343694eee8d8 ("btrfs: switch seed device to list api"), missed to
check if the parameter seed is true in the function btrfs_find_device().
This tells it whether to traverse the seed device list or not.

After this commit, the argument is unused and can be removed.

In device_list_add() it's not necessary because fs_devices always points
to the device's fs_devices. So with the devid+uuid matching, it will
find the right device and return, thus not needing to traverse seed
devices.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain
2020-11-03 13:49:43 +08:00
committed by David Sterba
parent 3a160a9331
commit b2598edf8b
5 changed files with 19 additions and 21 deletions
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22
fs/btrfs/volumes.c
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@@ -822,7 +822,7 @@ static noinline struct btrfs_device *device_list_add(const char *path,
} else {
mutex_lock(&fs_devices->device_list_mutex);
device = btrfs_find_device(fs_devices, devid,
disk_super->dev_item.uuid, NULL, false);
disk_super->dev_item.uuid, NULL);
/*
* If this disk has been pulled into an fs devices created by
@@ -2294,10 +2294,10 @@ static struct btrfs_device *btrfs_find_device_by_path(
dev_uuid = disk_super->dev_item.uuid;
if (btrfs_fs_incompat(fs_info, METADATA_UUID))
device = btrfs_find_device(fs_info->fs_devices, devid, dev_uuid,
disk_super->metadata_uuid, true);
disk_super->metadata_uuid);
else
device = btrfs_find_device(fs_info->fs_devices, devid, dev_uuid,
disk_super->fsid, true);
disk_super->fsid);
btrfs_release_disk_super(disk_super);
if (!device)
@@ -2317,7 +2317,7 @@ struct btrfs_device *btrfs_find_device_by_devspec(
if (devid) {
device = btrfs_find_device(fs_info->fs_devices, devid, NULL,
NULL, true);
NULL);
if (!device)
return ERR_PTR(-ENOENT);
return device;
@@ -2466,7 +2466,7 @@ next_slot:
read_extent_buffer(leaf, fs_uuid, btrfs_device_fsid(dev_item),
BTRFS_FSID_SIZE);
device = btrfs_find_device(fs_info->fs_devices, devid, dev_uuid,
fs_uuid, true);
fs_uuid);
BUG_ON(!device); /* Logic error */
if (device->fs_devices->seeding) {
@@ -6459,8 +6459,7 @@ blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
* If @seed is true, traverse through the seed devices.
*/
struct btrfs_device *btrfs_find_device(struct btrfs_fs_devices *fs_devices,
u64 devid, u8 *uuid, u8 *fsid,
bool seed)
u64 devid, u8 *uuid, u8 *fsid)
{
struct btrfs_device *device;
struct btrfs_fs_devices *seed_devs;
@@ -6667,7 +6666,7 @@ static int read_one_chunk(struct btrfs_key *key, struct extent_buffer *leaf,
btrfs_stripe_dev_uuid_nr(chunk, i),
BTRFS_UUID_SIZE);
map->stripes[i].dev = btrfs_find_device(fs_info->fs_devices,
devid, uuid, NULL, true);
devid, uuid, NULL);
if (!map->stripes[i].dev &&
!btrfs_test_opt(fs_info, DEGRADED)) {
free_extent_map(em);
@@ -6806,7 +6805,7 @@ static int read_one_dev(struct extent_buffer *leaf,
}
device = btrfs_find_device(fs_info->fs_devices, devid, dev_uuid,
fs_uuid, true);
fs_uuid);
if (!device) {
if (!btrfs_test_opt(fs_info, DEGRADED)) {
btrfs_report_missing_device(fs_info, devid,
@@ -7469,8 +7468,7 @@ int btrfs_get_dev_stats(struct btrfs_fs_info *fs_info,
int i;
mutex_lock(&fs_devices->device_list_mutex);
dev = btrfs_find_device(fs_info->fs_devices, stats->devid, NULL, NULL,
true);
dev = btrfs_find_device(fs_info->fs_devices, stats->devid, NULL, NULL);
mutex_unlock(&fs_devices->device_list_mutex);
if (!dev) {
@@ -7601,7 +7599,7 @@ static int verify_one_dev_extent(struct btrfs_fs_info *fs_info,
}
/* Make sure no dev extent is beyond device bondary */
dev = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL, true);
dev = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL);
if (!dev) {
btrfs_err(fs_info, "failed to find devid %llu", devid);
ret = -EUCLEAN;