https://github.com/torvalds/linux
Revision df6c0cd9a872ebf2298f5d66d8c789f62dbe35fc authored by Jun'ichi Nomura on 30 October 2006, 21:23:56 UTC, committed by Linus Torvalds on 31 October 2006, 03:29:41 UTC
add_bd_holder() is called from bd_claim_by_kobject to put a given struct
bd_holder in the list if there is no matching entry.
There are 3 possible results of add_bd_holder():
1. there is no matching entry and add the given one to the list
2. there is matching entry, so just increment reference count of
the existing one
3. something failed during its course
1 and 2 are successful cases. But for case 2, someone has to free the
unused struct bd_holder.
The current code frees it inside of add_bd_holder and returns same value
0 for both cases 1 and 2. However, it's natural and less error-prone if
caller frees it since it's allocated by the caller.
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent bcb5516
Tip revision: df6c0cd9a872ebf2298f5d66d8c789f62dbe35fc authored by Jun'ichi Nomura on 30 October 2006, 21:23:56 UTC
[PATCH] clean up add_bd_holder()
[PATCH] clean up add_bd_holder()
Tip revision: df6c0cd
SubmitChecklist
Linux Kernel patch sumbittal checklist
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Here are some basic things that developers should do if they want to see their
kernel patch submissions accepted more quickly.
These are all above and beyond the documentation that is provided in
Documentation/SubmittingPatches and elsewhere regarding submitting Linux
kernel patches.
1: Builds cleanly with applicable or modified CONFIG options =y, =m, and
=n. No gcc warnings/errors, no linker warnings/errors.
2: Passes allnoconfig, allmodconfig
3: Builds on multiple CPU architectures by using local cross-compile tools
or something like PLM at OSDL.
4: ppc64 is a good architecture for cross-compilation checking because it
tends to use `unsigned long' for 64-bit quantities.
5: Matches kernel coding style(!)
6: Any new or modified CONFIG options don't muck up the config menu.
7: All new Kconfig options have help text.
8: Has been carefully reviewed with respect to relevant Kconfig
combinations. This is very hard to get right with testing -- brainpower
pays off here.
9: Check cleanly with sparse.
10: Use 'make checkstack' and 'make namespacecheck' and fix any problems
that they find. Note: checkstack does not point out problems explicitly,
but any one function that uses more than 512 bytes on the stack is a
candidate for change.
11: Include kernel-doc to document global kernel APIs. (Not required for
static functions, but OK there also.) Use 'make htmldocs' or 'make
mandocs' to check the kernel-doc and fix any issues.
12: Has been tested with CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT,
CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES,
CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_SPINLOCK_SLEEP all simultaneously
enabled.
13: Has been build- and runtime tested with and without CONFIG_SMP and
CONFIG_PREEMPT.
14: If the patch affects IO/Disk, etc: has been tested with and without
CONFIG_LBD.
15: All codepaths have been exercised with all lockdep features enabled.
16: All new /proc entries are documented under Documentation/
17: All new kernel boot parameters are documented in
Documentation/kernel-parameters.txt.
18: All new module parameters are documented with MODULE_PARM_DESC()
19: All new userspace interfaces are documented in Documentation/ABI/.
See Documentation/ABI/README for more information.
20: Check that it all passes `make headers_check'.
Computing file changes ...
