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btrfs: create helper btrfs_find_device_by_user_input() 

The patch renames btrfs_dev_replace_find_srcdev() to
btrfs_find_device_by_user_input() and moves it to volumes.c, so that
delete device can use it.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2016-02-13 10:01:35 +08:00 committed by David Sterba
parent bd45ffbcb1
commit 24e0474b59
3 changed files with 23 additions and 23 deletions
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24
fs/btrfs/dev-replace.c
View File

@ -44,9 +44,6 @@ static void btrfs_dev_replace_update_device_in_mapping_tree(
struct btrfs_fs_info *fs_info,
struct btrfs_device *srcdev,
struct btrfs_device *tgtdev);
static int btrfs_dev_replace_find_srcdev(struct btrfs_root *root, u64 srcdevid,
char *srcdev_name,
struct btrfs_device **device);
static u64 __btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info);
static int btrfs_dev_replace_kthread(void *data);
static int btrfs_dev_replace_continue_on_mount(struct btrfs_fs_info *fs_info);
@ -329,7 +326,7 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
/* the disk copy procedure reuses the scrub code */
mutex_lock(&fs_info->volume_mutex);
ret = btrfs_dev_replace_find_srcdev(root, args->start.srcdevid,
ret = btrfs_find_device_by_user_input(root, args->start.srcdevid,
args->start.srcdev_name,
&src_device);
if (ret) {
@ -626,25 +623,6 @@ static void btrfs_dev_replace_update_device_in_mapping_tree(
write_unlock(&em_tree->lock);
}
static int btrfs_dev_replace_find_srcdev(struct btrfs_root *root, u64 srcdevid,
char *srcdev_name,
struct btrfs_device **device)
{
int ret;
if (srcdevid) {
ret = 0;
*device = btrfs_find_device(root->fs_info, srcdevid, NULL,
NULL);
if (!*device)
ret = -ENOENT;
} else {
ret = btrfs_find_device_missing_or_by_path(root, srcdev_name,
device);
}
return ret;
}
void btrfs_dev_replace_status(struct btrfs_fs_info *fs_info,
struct btrfs_ioctl_dev_replace_args *args)
{

19
fs/btrfs/volumes.c
View File

@ -2126,6 +2126,25 @@ int btrfs_find_device_missing_or_by_path(struct btrfs_root *root,
}
}
int btrfs_find_device_by_user_input(struct btrfs_root *root, u64 srcdevid,
char *srcdev_name,
struct btrfs_device **device)
{
int ret;
if (srcdevid) {
ret = 0;
*device = btrfs_find_device(root->fs_info, srcdevid, NULL,
NULL);
if (!*device)
ret = -ENOENT;
} else {
ret = btrfs_find_device_missing_or_by_path(root, srcdev_name,
device);
}
return ret;
}
/*
* does all the dirty work required for changing file system's UUID.
*/

3
fs/btrfs/volumes.h
View File

@ -448,6 +448,9 @@ void btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices, int step);
int btrfs_find_device_missing_or_by_path(struct btrfs_root *root,
char *device_path,
struct btrfs_device **device);
int btrfs_find_device_by_user_input(struct btrfs_root *root, u64 srcdevid,
char *srcdev_name,
struct btrfs_device **device);
struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,
const u64 *devid,
const u8 *uuid);