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7a404c3e64
dmaprocs uses list to store all dmabufs of a process, during iterate_fd we loop through all the files of a process and check if each file is a dmabuf and if it is dmabuf we check if the list already contains this dmabuf we do this while holding a file_lock this could take time if the list is large and cause contention on the file_lock, so replace list with a hashtable so that this time is reduced. Change-Id: Ib65863530161ecef1bf67cc85fbe3de0b6e3d342 Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>