From: Bob Peterson <rpeterso@redhat.com>
Date: Tue, 29 Jan 2008 00:38:07 +0000 (-0600)
Subject: [GFS2] Combine rg_flags and rd_flags
X-Git-Tag: v2.6.26-rc1~1144^2~38
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=42d52e3818751633656fb90df1bd5cb5362fa8cc;p=linux-2.6-omap-h63xx.git
[GFS2] Combine rg_flags and rd_flags
This patch reduces the memory required by GFS2 by combining
the rd_flags and rg_flags (in core only).
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 7ae12d2b626..39bab7b213e 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -69,7 +69,6 @@ struct gfs2_bitmap {
};
struct gfs2_rgrp_host {
- u32 rg_flags;
u32 rg_free;
u32 rg_dinodes;
u64 rg_igeneration;
@@ -95,8 +94,9 @@ struct gfs2_rgrpd {
u32 rd_last_alloc_data;
u32 rd_last_alloc_meta;
struct gfs2_sbd *rd_sbd;
- unsigned long rd_flags;
-#define GFS2_RDF_CHECK 0x0001 /* Need to check for unlinked inodes */
+ unsigned char rd_flags;
+#define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */
+#define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */
};
enum gfs2_state_bits {
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index dc7e83eed32..da60ce8c5d7 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -655,21 +655,31 @@ int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh)
return error;
}
-static void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf)
+static void gfs2_rgrp_in(struct gfs2_rgrpd *rgd, const void *buf)
{
const struct gfs2_rgrp *str = buf;
+ struct gfs2_rgrp_host *rg = &rgd->rd_rg;
+ u32 rg_flags;
- rg->rg_flags = be32_to_cpu(str->rg_flags);
+ rg_flags = be32_to_cpu(str->rg_flags);
+ if (rg_flags & GFS2_RGF_NOALLOC)
+ rgd->rd_flags |= GFS2_RDF_NOALLOC;
+ else
+ rgd->rd_flags &= ~GFS2_RDF_NOALLOC;
rg->rg_free = be32_to_cpu(str->rg_free);
rg->rg_dinodes = be32_to_cpu(str->rg_dinodes);
rg->rg_igeneration = be64_to_cpu(str->rg_igeneration);
}
-static void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf)
+static void gfs2_rgrp_out(struct gfs2_rgrpd *rgd, void *buf)
{
struct gfs2_rgrp *str = buf;
+ struct gfs2_rgrp_host *rg = &rgd->rd_rg;
+ u32 rg_flags = 0;
- str->rg_flags = cpu_to_be32(rg->rg_flags);
+ if (rgd->rd_flags & GFS2_RDF_NOALLOC)
+ rg_flags |= GFS2_RGF_NOALLOC;
+ str->rg_flags = cpu_to_be32(rg_flags);
str->rg_free = cpu_to_be32(rg->rg_free);
str->rg_dinodes = cpu_to_be32(rg->rg_dinodes);
str->__pad = cpu_to_be32(0);
@@ -727,7 +737,7 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
}
if (rgd->rd_rg_vn != gl->gl_vn) {
- gfs2_rgrp_in(&rgd->rd_rg, (rgd->rd_bits[0].bi_bh)->b_data);
+ gfs2_rgrp_in(rgd, (rgd->rd_bits[0].bi_bh)->b_data);
rgd->rd_rg_vn = gl->gl_vn;
}
@@ -840,7 +850,7 @@ static int try_rgrp_fit(struct gfs2_rgrpd *rgd, struct gfs2_alloc *al)
struct gfs2_sbd *sdp = rgd->rd_sbd;
int ret = 0;
- if (rgd->rd_rg.rg_flags & GFS2_RGF_NOALLOC)
+ if (rgd->rd_flags & GFS2_RDF_NOALLOC)
return 0;
spin_lock(&sdp->sd_rindex_spin);
@@ -1431,7 +1441,7 @@ u64 gfs2_alloc_data(struct gfs2_inode *ip)
rgd->rd_rg.rg_free--;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
- gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+ gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
al->al_alloced++;
@@ -1476,7 +1486,7 @@ u64 gfs2_alloc_meta(struct gfs2_inode *ip)
rgd->rd_rg.rg_free--;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
- gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+ gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
al->al_alloced++;
@@ -1519,7 +1529,7 @@ u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
rgd->rd_rg.rg_dinodes++;
*generation = rgd->rd_rg.rg_igeneration++;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
- gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+ gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
al->al_alloced++;
@@ -1553,7 +1563,7 @@ void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen)
rgd->rd_rg.rg_free += blen;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
- gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+ gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
gfs2_trans_add_rg(rgd);
@@ -1581,7 +1591,7 @@ void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen)
rgd->rd_rg.rg_free += blen;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
- gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+ gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
gfs2_trans_add_rg(rgd);
@@ -1601,7 +1611,7 @@ void gfs2_unlink_di(struct inode *inode)
if (!rgd)
return;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
- gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+ gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
gfs2_trans_add_rg(rgd);
}
@@ -1621,7 +1631,7 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
rgd->rd_rg.rg_free++;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
- gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+ gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
gfs2_statfs_change(sdp, 0, +1, -1);
gfs2_trans_add_rg(rgd);