Set default GPU MAXED @307MHz
 fs: import f2fs from git://git.kernel.org/pub/scm/linux/kernel/git/ja……egeuk/f2fs.git
f2fs: support 3.4
f2fs: support 3.0
f2fs: improve write performance under frequent fsync calls
f2fs: add a sysfs entry to control max_victim_search
f2fs: remove the needless parameter of f2fs_wait_on_page_writeback
f2fs: move grabing orphan pages out of protection region
f2fs: move alloc new orphan node out of lock protection region
f2fs: use spinlock rather than mutex for better speed
f2fs: add delimiter to seperate name and value in debug phrase
f2fs: avoid f2fs_balance_fs call during pageout
f2fs: missing REQ_META and REQ_PRIO when sync_meta_pages(META_FLUSH)
f2fs: clean checkpatch warnings
f2fs: call mark_inode_dirty to flush dirty pages
f2fs: move a branch for code redability
f2fs: add help function META_MAPPING
f2fs: remove the orphan block page array
f2fs: introduce NODE_MAPPING for code consistency
f2fs: drop obsolete node page when it is truncated