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author | Steven Whitehouse <swhiteho@redhat.com> | 2008-01-10 10:18:55 -0500 |
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committer | Steven Whitehouse <swhiteho@redhat.com> | 2008-01-25 03:18:25 -0500 |
commit | 6dbd822487d0a9f14432cb4680415b80656b63a2 (patch) | |
tree | f0391d598c27cd7c39c67cfa13799a784f4c389a /include/asm-m68knommu/siginfo.h | |
parent | ac39aadd0440ae696e6dacaa8006ce1737b17008 (diff) |
[GFS2] Reduce inode size by moving i_alloc out of line
It is possible to reduce the size of GFS2 inodes by taking the i_alloc
structure out of the gfs2_inode. This patch allocates the i_alloc
structure whenever its needed, and frees it afterward. This decreases
the amount of low memory we use at the expense of requiring a memory
allocation for each page or partial page that we write. A quick test
with postmark shows that the overhead is not measurable and I also note
that OCFS2 use the same approach.
In the future I'd like to solve the problem by shrinking down the size
of the members of the i_alloc structure, but for now, this reduces the
immediate problem of using too much low-memory on x86 and doesn't add
too much overhead.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'include/asm-m68knommu/siginfo.h')
0 files changed, 0 insertions, 0 deletions