linux.git/mm/backing-dev.c, branch v4.16-rc2

Revert "bdi: add error handle for bdi_debug_register"

2017-12-21T17:01:30+00:00

This reverts commit a0747a859ef6d3cc5b6cd50eb694499b78dd0025.

It breaks some booting for some users, and more than a week
into this, there's still no good fix. Revert this commit
for now until a solution has been found.

Reported-by: Laura Abbott 
Reported-by: Bruno Wolff III 
Signed-off-by: Jens Axboe

bdi: add error handle for bdi_debug_register

2017-11-19T18:02:13+00:00

In order to make error handle more cleaner we call bdi_debug_register
before set state to WB_registered, that we can avoid call bdi_unregister
in release_bdi().

Reviewed-by: Jan Kara 
Signed-off-by: weiping zhang 
Signed-off-by: Jens Axboe

bdi: convert bdi_debug_register to int

2017-11-19T18:02:13+00:00

Convert bdi_debug_register to int and then do error handle for it.

Reviewed-by: Jan Kara 
Signed-off-by: weiping zhang 
Signed-off-by: Jens Axboe

backing-dev: kill unused pdflush_proc_obsolete()

2017-10-06T14:15:15+00:00

After commit b35bd0d9f8a8, pdflush_proc_obsolete() is no longer
used. Kill the function and declaration.

Reported-by: Rakesh Pandit 
Signed-off-by: Jens Axboe

mm/backing-dev.c: fix an error handling path in 'cgwb_create()'

2017-09-11T20:16:44+00:00

If the 'kmalloc' fails, we must go through the existing error handling
path.

Signed-off-by: Christophe JAILLET 
Fixes: 52ebea749aae ("writeback: make backing_dev_info host cgroup-specific bdi_writebacks")
Reviewed-by: Jan Kara 
Signed-off-by: Jens Axboe

bdi: Drop 'parent' argument from bdi_register[_va]()

2017-04-20T18:09:55+00:00

Drop 'parent' argument of bdi_register() and bdi_register_va().  It is
always NULL.

Reviewed-by: Christoph Hellwig 
Signed-off-by: Jan Kara 
Signed-off-by: Jens Axboe

block: Remove unused functions

2017-04-20T18:09:55+00:00

Now that all backing_dev_info structure are allocated separately, we can
drop some unused functions.

Reviewed-by: Christoph Hellwig 
Signed-off-by: Jan Kara 
Signed-off-by: Jens Axboe

bdi: Export bdi_alloc_node() and bdi_put()

2017-04-20T18:09:55+00:00

MTD will want to call bdi_alloc_node() and bdi_put() directly. Export
these functions.

Reviewed-by: Christoph Hellwig 
Signed-off-by: Jan Kara 
Signed-off-by: Jens Axboe

block: Unregister bdi on last reference drop

2017-04-20T18:09:55+00:00

Most users will want to unregister bdi when dropping last reference to a
bdi. Only a few users (like block devices) want to play more complex
tricks with bdi registration and unregistration. So unregister bdi when
the last reference to bdi is dropped and just make sure we don't
unregister the bdi the second time if it is already unregistered.

Reviewed-by: Christoph Hellwig 
Signed-off-by: Jan Kara 
Signed-off-by: Jens Axboe

bdi: Provide bdi_register_va() and bdi_alloc()

2017-04-20T18:09:55+00:00

Add function that registers bdi and takes va_list instead of variable
number of arguments.

Add bdi_alloc() as simple wrapper for NUMA-unaware users allocating BDI.

Reviewed-by: Christoph Hellwig 
Signed-off-by: Jan Kara 
Signed-off-by: Jens Axboe