tree e0a36fec7076d48764f0588b9ce09ce8e9f067ff
parent 0d9a490abe1f69fda220f7866f6f23af41daa128
author Miklos Szeredi <miklos@szeredi.hu> 1151053510 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1151073782 -0700

[PATCH] locks: don't do unnecessary allocations

posix_lock_file() always allocates new locks in advance, even if it's easy to
determine that no allocations will be needed.

Optimize these cases:

 - FL_ACCESS flag is set

 - Unlocking the whole range

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>