This patch refactors granule allocator to remove the 32 granules
limitation with the help of a gran_range_s structure and related
functions, see "mm_grantable.h" for details.
Below are the major functions explaining how this works:
- The gran_match() checks if a gran range all in the given state.
it gives last mismatch position when fails free range matching.
- The gran_search() tries to find the position of a free range.
It leverages last mismatch position from gran_match() to speed
up the search.
range size handling is mainly in gran_match() and gran_set_().
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
Resolution of Issue 619 will require multiple steps, this part of the first step in that resolution: Every call to nxsem_wait_uninterruptible() must handle the return value from nxsem_wait_uninterruptible properly. This commit is only for those files under fs/tmpfs and fs/spiffs. Still do do: The rest of fs/ and all of drivers/ and arch/.
Resolution of Issue 619 will require multiple steps, this part of the first step in that resolution: Every call to nxsem_wait_uninterruptible() must handle the return value from nxsem_wait_uninterruptible properly. This commit is only for those files under graphics/, mm/, net/, sched/, wireless/bluetooth.
Still to do: Files under fs/, drivers/, and arch. The last is 116 files and will take some effort.
Yanfeng Liu