]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
ocfs2: Local alloc window size changeable via mount option
authorSunil Mushran <sunil.mushran@oracle.com>
Thu, 20 Dec 2007 22:58:11 +0000 (14:58 -0800)
committerMark Fasheh <mark.fasheh@oracle.com>
Fri, 25 Jan 2008 23:05:43 +0000 (15:05 -0800)
commit2fbe8d1ebe004425b4f7b8bba345623d2280be82
tree7620954c7a364c41306a3becc0046dd1e235158f
parentd147b3d630edef1d34de6ea819787a1ac1b8603b
ocfs2: Local alloc window size changeable via mount option

Local alloc is a performance optimization in ocfs2 in which a node
takes a window of bits from the global bitmap and then uses that for
all small local allocations. This window size is fixed to 8MB currently.
This patch allows users to specify the window size in MB including
disabling it by passing in 0. If the number specified is too large,
the fs will use the default value of 8MB.

mount -o localalloc=X /dev/sdX /mntpoint

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Documentation/filesystems/ocfs2.txt
fs/ocfs2/localalloc.c
fs/ocfs2/ocfs2.h
fs/ocfs2/ocfs2_fs.h
fs/ocfs2/suballoc.c
fs/ocfs2/super.c