---
v2: use bool instead of int.
use positive meaning instead of negative.
conflict fix: due to 1b3922a8bc7 in misc-next.
if (dev->disk_total_bytes == 0) {
- dev = find_device(fs_info->fs_devices->seed, devid, NULL);
+ dev = btrfs_find_device(fs_info->fs_devices->seed, devid, NULL,
+ NULL, false);
fs/btrfs/dev-replace.c | 4 +--
fs/btrfs/ioctl.c | 4 +--
fs/btrfs/scrub.c | 4 +--
fs/btrfs/volumes.c | 73 +++++++++++++++++++++++++-------------------------
fs/btrfs/volumes.h | 3 ++-
5 files changed, 44 insertions(+), 44 deletions(-)
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index 6f0fe3623381..975cbf011593 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -112,10 +112,10 @@ int btrfs_init_dev_replace(struct btrfs_fs_info *fs_info)
case BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED:
case BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED:
dev_replace->srcdev = btrfs_find_device(fs_info->fs_devices,
- src_devid, NULL, NULL);
+ src_devid, NULL, NULL, true);
dev_replace->tgtdev = btrfs_find_device(fs_info->fs_devices,
BTRFS_DEV_REPLACE_DEVID,
- NULL, NULL);
+ NULL, NULL, true);
/*
* allow 'btrfs dev replace_cancel' if src/tgt device is
* missing
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index fd5f97aeb35c..3f9d7be30bf4 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1642,7 +1642,7 @@ static noinline int btrfs_ioctl_resize(struct file *file,
btrfs_info(fs_info, "resizing devid %llu", devid);
}
- device = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL);
+ device = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL, true);
if (!device) {
btrfs_info(fs_info, "resizer unable to find device %llu",
devid);
@@ -3179,7 +3179,7 @@ static long btrfs_ioctl_dev_info(struct btrfs_fs_info *fs_info,
rcu_read_lock();
dev = btrfs_find_device(fs_info->fs_devices, di_args->devid, s_uuid,
- NULL);
+ NULL, true);
if (!dev) {
ret = -ENODEV;
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 72044efc610a..b320910c6740 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -3835,7 +3835,7 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
return PTR_ERR(sctx);
mutex_lock(&fs_info->fs_devices->device_list_mutex);
- dev = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL);
+ dev = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL, true);
if (!dev || (test_bit(BTRFS_DEV_STATE_MISSING, &dev->dev_state) &&
!is_dev_replace)) {
mutex_unlock(&fs_info->fs_devices->device_list_mutex);
@@ -4012,7 +4012,7 @@ int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid,
struct scrub_ctx *sctx = NULL;
mutex_lock(&fs_info->fs_devices->device_list_mutex);
- dev = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL);
+ dev = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL, true);
if (dev)
sctx = dev->scrub_ctx;
if (sctx)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 5b37044503c0..df1a077aeb80 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -415,27 +415,6 @@ static struct btrfs_device *__alloc_device(void)
return dev;
}
-/*
- * Find a device specified by @devid or @uuid in the list of @fs_devices, or
- * return NULL.
- *
- * If devid and uuid are both specified, the match must be exact, otherwise
- * only devid is used.
- */
-static struct btrfs_device *find_device(struct btrfs_fs_devices *fs_devices,
- u64 devid, const u8 *uuid)
-{
- struct btrfs_device *dev;
-
- list_for_each_entry(dev, &fs_devices->devices, dev_list) {
- if (dev->devid == devid &&
- (!uuid || !memcmp(dev->uuid, uuid, BTRFS_UUID_SIZE))) {
- return dev;
- }
- }
- return NULL;
-}
-
static noinline struct btrfs_fs_devices *find_fsid(
const u8 *fsid, const u8 *metadata_fsid)
{
@@ -990,8 +969,9 @@ static noinline struct btrfs_device *device_list_add(const char *path,
device = NULL;
} else {
mutex_lock(&fs_devices->device_list_mutex);
- device = find_device(fs_devices, devid,
- disk_super->dev_item.uuid);
+ device = btrfs_find_device(fs_devices, devid,
+ disk_super->dev_item.uuid, NULL,
+ false);
/*
* If this disk has been pulled into an fs devices created by
@@ -2419,10 +2399,10 @@ 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);
+ disk_super->metadata_uuid, true);
else
device = btrfs_find_device(fs_info->fs_devices, devid, dev_uuid,
- disk_super->fsid);
+ disk_super->fsid, true);
brelse(bh);
if (!device)
@@ -2442,7 +2422,7 @@ struct btrfs_device *btrfs_find_device_by_devspec(
if (devid) {
device = btrfs_find_device(fs_info->fs_devices, devid, NULL,
- NULL);
+ NULL, true);
if (!device)
return ERR_PTR(-ENOENT);
return device;
@@ -2584,7 +2564,7 @@ static int btrfs_finish_sprout(struct btrfs_trans_handle *trans,
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);
+ fs_uuid, true);
BUG_ON(!device); /* Logic error */
if (device->fs_devices->seeding) {
@@ -6637,19 +6617,36 @@ blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
return BLK_STS_OK;
}
+/*
+ * Find a device specified by @devid or @uuid in the list of @fs_devices, or
+ * return NULL.
+ *
+ * If devid and uuid are both specified, the match must be exact, otherwise
+ * only devid is used.
+ *
+ * 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)
+ u64 devid, u8 *uuid, u8 *fsid,
+ bool seed)
{
struct btrfs_device *device;
while (fs_devices) {
if (!fsid ||
!memcmp(fs_devices->metadata_uuid, fsid, BTRFS_FSID_SIZE)) {
- device = find_device(fs_devices, devid, uuid);
- if (device)
- return device;
+ list_for_each_entry(device, &fs_devices->devices,
+ dev_list) {
+ if (device->devid == devid && (!uuid ||
+ !memcmp(device->uuid, uuid,
+ BTRFS_UUID_SIZE)))
+ return device;
+ }
}
- fs_devices = fs_devices->seed;
+ if (seed)
+ fs_devices = fs_devices->seed;
+ else
+ return NULL;
}
return NULL;
}
@@ -6895,7 +6892,7 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key,
btrfs_stripe_dev_uuid_nr(chunk, i),
BTRFS_UUID_SIZE);
map->stripes[i].dev = btrfs_find_device(fs_info->fs_devices,
- devid, uuid, NULL);
+ devid, uuid, NULL, true);
if (!map->stripes[i].dev &&
!btrfs_test_opt(fs_info, DEGRADED)) {
free_extent_map(em);
@@ -7035,7 +7032,7 @@ static int read_one_dev(struct btrfs_fs_info *fs_info,
}
device = btrfs_find_device(fs_info->fs_devices, devid, dev_uuid,
- fs_uuid);
+ fs_uuid, true);
if (!device) {
if (!btrfs_test_opt(fs_info, DEGRADED)) {
btrfs_report_missing_device(fs_info, devid,
@@ -7625,7 +7622,8 @@ 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);
+ dev = btrfs_find_device(fs_info->fs_devices, stats->devid, NULL, NULL,
+ true);
mutex_unlock(&fs_devices->device_list_mutex);
if (!dev) {
@@ -7839,7 +7837,7 @@ 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);
+ dev = btrfs_find_device(fs_info->fs_devices, devid, NULL, NULL, true);
if (!dev) {
btrfs_err(fs_info, "failed to find devid %llu", devid);
ret = -EUCLEAN;
@@ -7848,7 +7846,8 @@ static int verify_one_dev_extent(struct btrfs_fs_info *fs_info,
/* It's possible this device is a dummy for seed device */
if (dev->disk_total_bytes == 0) {
- dev = find_device(fs_info->fs_devices->seed, devid, NULL);
+ dev = btrfs_find_device(fs_info->fs_devices->seed, devid, NULL,
+ NULL, false);
if (!dev) {
btrfs_err(fs_info, "failed to find seed devid %llu",
devid);
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 46ee8eafdc92..c8ddcf4ae1f2 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -435,7 +435,8 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
int btrfs_grow_device(struct btrfs_trans_handle *trans,
struct btrfs_device *device, u64 new_size);
struct btrfs_device *btrfs_find_device(struct btrfs_fs_devices *fs_devices,
- u64 devid, u8 *uuid, u8 *fsid);
+ u64 devid, u8 *uuid, u8 *fsid,
+ bool seed);
int btrfs_shrink_device(struct btrfs_device *device, u64 new_size);
int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *path);
int btrfs_balance(struct btrfs_fs_info *fs_info,
