The name is only printed for a not registered bdi in writeback.  Use the
device name there as is more useful anyway for the unlike case that the
warning triggers.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
---
 block/blk-core.c                 | 1 -
 drivers/mtd/mtdcore.c            | 1 -
 fs/fs-writeback.c                | 2 +-
 fs/super.c                       | 2 --
 include/linux/backing-dev-defs.h | 2 --
 mm/backing-dev.c                 | 1 -
 6 files changed, 1 insertion(+), 8 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 285a2f8ee8d3a..538cbc725620b 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -511,7 +511,6 @@ struct request_queue *__blk_alloc_queue(int node_id)
 
        q->backing_dev_info->ra_pages = VM_READAHEAD_PAGES;
        q->backing_dev_info->capabilities = BDI_CAP_CGROUP_WRITEBACK;
-       q->backing_dev_info->name = "block";
        q->node = node_id;
 
        timer_setup(&q->backing_dev_info->laptop_mode_wb_timer,
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 39ec563d9a14b..fcb018ce17c3d 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -2040,7 +2040,6 @@ static struct backing_dev_info * __init mtd_bdi_init(char 
*name)
        if (!bdi)
                return ERR_PTR(-ENOMEM);
 
-       bdi->name = name;
        /*
         * We put '-0' suffix to the name to get the same name format as we
         * used to get. Since this is called only once, we get a unique name. 
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 76ac9c7d32ec7..d85323607b49f 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -2320,7 +2320,7 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 
                        WARN(bdi_cap_writeback_dirty(wb->bdi) &&
                             !test_bit(WB_registered, &wb->state),
-                            "bdi-%s not registered\n", wb->bdi->name);
+                            "bdi-%s not registered\n", bdi_dev_name(wb->bdi));
 
                        inode->dirtied_when = jiffies;
                        if (dirtytime)
diff --git a/fs/super.c b/fs/super.c
index dd28fcd706ff5..4991f441988e0 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1602,8 +1602,6 @@ int super_setup_bdi_name(struct super_block *sb, char 
*fmt, ...)
        if (!bdi)
                return -ENOMEM;
 
-       bdi->name = sb->s_type->name;
-
        va_start(args, fmt);
        err = bdi_register_va(bdi, fmt, args);
        va_end(args);
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 2849bdbb3acbe..011bb8ad0738a 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -194,8 +194,6 @@ struct backing_dev_info {
        congested_fn *congested_fn; /* Function pointer if device is md/dm */
        void *congested_data;   /* Pointer to aux data for congested func */
 
-       const char *name;
-
        struct kref refcnt;     /* Reference counter for the structure */
        unsigned int capabilities; /* Device capabilities */
        unsigned int min_ratio;
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 1f55d5b8269ff..d382272bcc310 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -15,7 +15,6 @@
 #include <trace/events/writeback.h>
 
 struct backing_dev_info noop_backing_dev_info = {
-       .name           = "noop",
        .capabilities   = BDI_CAP_NO_ACCT_AND_WRITEBACK,
 };
 EXPORT_SYMBOL_GPL(noop_backing_dev_info);
-- 
2.26.2

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