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| author | Steven Whitehouse <swhiteho@redhat.com> | 2012-10-31 10:37:10 +0000 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2012-11-07 13:33:17 +0000 |
| commit | 9dbe9610b9df4efe0946299804ed46bb8f91dec2 (patch) | |
| tree | 8d54797420ed9d0aef1c6bdd8f3b8dd5e9938d0a /fs/gfs2/rgrp.h | |
| parent | c9aecf73717f55e41ac11682a50bef8594547025 (diff) | |
| download | linux-9dbe9610b9df4efe0946299804ed46bb8f91dec2.tar.bz2 | |
GFS2: Add Orlov allocator
Just like ext3, this works on the root directory and any directory
with the +T flag set. Also, just like ext3, any subdirectory created
in one of the just mentioned cases will be allocated to a random
resource group (GFS2 equivalent of a block group).
If you are creating a set of directories, each of which will contain a
job running on a different node, then by setting +T on the parent
directory before creating the subdirectories, each will land up in a
different resource group, and thus resource group contention between
nodes will be kept to a minimum.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/rgrp.h')
| -rw-r--r-- | fs/gfs2/rgrp.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h index 24077958dcf6..842185853f6b 100644 --- a/fs/gfs2/rgrp.h +++ b/fs/gfs2/rgrp.h @@ -39,7 +39,8 @@ extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh); extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip); -extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested); +#define GFS2_AF_ORLOV 1 +extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested, u32 flags); extern void gfs2_inplace_release(struct gfs2_inode *ip); extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n, |