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| author | Zhang Yanfei <zhangyanfei@cn.fujitsu.com> | 2013-07-08 15:59:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-09 10:33:20 -0700 |
| commit | 3fcd76e8028e0be37b02a2002b4f56755daeda06 (patch) | |
| tree | 452c848c3c7f664e28911062076207c14db940d0 /mm/readahead.c | |
| parent | ab15d9b4cbc2b6497023f554a152c2573ca53671 (diff) | |
| download | op-kernel-dev-3fcd76e8028e0be37b02a2002b4f56755daeda06.zip op-kernel-dev-3fcd76e8028e0be37b02a2002b4f56755daeda06.tar.gz | |
mm/vmalloc.c: remove dead code in vb_alloc
Space in a vmap block that was once allocated is considered dirty and
not made available for allocation again before the whole block is
recycled. The result is that free space within a vmap block is always
contiguous.
So if a vmap block has enough free space for allocation, the allocation
is impossible to fail. Thus, the fragmented block purging was never
invoked from vb_alloc(). So remove this dead code.
[ Same patches also sent by:
Chanho Min <chanho.min@lge.com>
Johannes Weiner <hannes@cmpxchg.org>
but git doesn't do "multiple authors" ]
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/readahead.c')
0 files changed, 0 insertions, 0 deletions
