linux.git/include/uapi/linux/bcache.h, branch v5.8

bcache: use read_cache_page_gfp to read the superblock

2020-01-23T18:40:01+00:00

Avoid a pointless dependency on buffer heads in bcache by simply open
coding reading a single page.  Also add a SB_OFFSET define for the
byte offset of the superblock instead of using magic numbers.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Coly Li 
Signed-off-by: Jens Axboe

bcache: use a separate data structure for the on-disk super block

2020-01-23T18:40:00+00:00

Split out an on-disk version struct cache_sb with the proper endianness
annotations.  This fixes a fair chunk of sparse warnings, but there are
some left due to the way the checksum is defined.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Coly Li 
Signed-off-by: Jens Axboe

bcache: style fix to add a blank line after declarations

2018-08-11T21:46:41+00:00

Signed-off-by: Coly Li 
Reviewed-by: Shenghui Wang 
Signed-off-by: Jens Axboe

bcache: style fix to replace 'unsigned' by 'unsigned int'

2018-08-11T21:46:41+00:00

This patch fixes warning reported by checkpatch.pl by replacing 'unsigned'
with 'unsigned int'.

Signed-off-by: Coly Li 
Reviewed-by: Shenghui Wang 
Signed-off-by: Jens Axboe

bcache: stop using the deprecated get_seconds()

2018-07-27T15:15:47+00:00

The get_seconds function is deprecated now since it returns a 32-bit
value that will eventually overflow, and we are replacing it throughout
the kernel with ktime_get_seconds() or ktime_get_real_seconds() that
return a time64_t.

bcache uses get_seconds() to read the current system time and store it in
the superblock as well as in uuid_entry structures that are user visible.

Unfortunately, the two structures in are still limited to 32 bits, so this
won't fix any real problems but will still overflow in year 2106. Let's
at least document that properly, in case we get an updated format in the
future it can be fixed. We still have a long time before the overflow
and checking the tools at https://github.com/koverstreet/bcache-tools
reveals no access to any of them.

Signed-off-by: Arnd Bergmann 
Signed-off-by: Coly Li 
Signed-off-by: Jens Axboe

bcache: Fix building error on MIPS

2017-11-24T23:22:58+00:00

This patch try to fix the building error on MIPS. The reason is MIPS
has already defined the PTR macro, which conflicts with the PTR macro
in include/uapi/linux/bcache.h.

[fixed by mlyle: corrected a line-length issue]

Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen 
Reviewed-by: Michael Lyle 
Signed-off-by: Michael Lyle 
Signed-off-by: Jens Axboe

License cleanup: add SPDX license identifier to uapi header files with no license

2017-11-02T10:19:54+00:00

Many user space API headers are missing licensing information, which
makes it hard for compliance tools to determine the correct license.

By default are files without license information under the default
license of the kernel, which is GPLV2.  Marking them GPLV2 would exclude
them from being included in non GPLV2 code, which is obviously not
intended. The user space API headers fall under the syscall exception
which is in the kernels COPYING file:

   NOTE! This copyright does *not* cover user programs that use kernel
   services by normal system calls - this is merely considered normal use
   of the kernel, and does *not* fall under the heading of "derived work".

otherwise syscall usage would not be possible.

Update the files which contain no license information with an SPDX
license identifier.  The chosen identifier is 'GPL-2.0 WITH
Linux-syscall-note' which is the officially assigned identifier for the
Linux syscall exception.  SPDX license identifiers are a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.  See the previous patch in this series for the
methodology of how this patch was researched.

Reviewed-by: Kate Stewart 
Reviewed-by: Philippe Ombredanne 
Reviewed-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

uapi: includes linux/types.h before exporting files

2017-05-10T15:18:38+00:00

Some files will be exported after a following patch. 0-day tests report the
following warning/error:
./usr/include/linux/bcache.h:8: include of  is preferred over 
./usr/include/linux/bcache.h:11: found __[us]{8,16,32,64} type without #include 
./usr/include/linux/qrtr.h:8: found __[us]{8,16,32,64} type without #include 
./usr/include/linux/cryptouser.h:39: found __[us]{8,16,32,64} type without #include 
./usr/include/linux/pr.h:14: found __[us]{8,16,32,64} type without #include 
./usr/include/linux/btrfs_tree.h:337: found __[us]{8,16,32,64} type without #include 
./usr/include/rdma/bnxt_re-abi.h:45: found __[us]{8,16,32,64} type without #include 

Signed-off-by: Nicolas Dichtel 
Signed-off-by: Masahiro Yamada

bcache: Add bch_btree_keys_u64s_remaining()

2014-01-08T21:05:13+00:00

Helper function to explicitly check how much space is free in a btree node

Signed-off-by: Kent Overstreet

bcache: Bkey indexing renaming

2014-01-08T21:05:12+00:00

More refactoring:

node() -> bset_bkey_idx()
end() -> bset_bkey_last()

Signed-off-by: Kent Overstreet