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GFS2: Be more aggressive in reclaiming unlinked inodes 

This patch increases the frequency with which gfs2 looks
for unlinked, but still allocated inodes. Its the equivalent
operation to ext3's orphan list, but done with bitmaps in
the resource groups.

This also fixes a bug where a field in the rgrp was too small.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2009-05-21 15:18:19 +01:00
parent 60a0b8f936
commit 1ce97e564b
2 changed files with 4 additions and 3 deletions
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2
fs/gfs2/incore.h
View File

@ -94,7 +94,7 @@ struct gfs2_rgrpd {
struct gfs2_sbd *rd_sbd;
unsigned int rd_bh_count;
u32 rd_last_alloc;
unsigned char rd_flags;
u32 rd_flags;
#define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
#define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
#define GFS2_RDF_ERROR 0x40000000 /* error in rg */

5
fs/gfs2/rgrp.c
View File

@ -581,7 +581,6 @@ static int read_rindex_entry(struct gfs2_inode *ip,
rgd->rd_gl->gl_object = rgd;
rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
rgd->rd_flags |= GFS2_RDF_CHECK;
return error;
}
@ -703,6 +702,8 @@ static void gfs2_rgrp_in(struct gfs2_rgrpd *rgd, const void *buf)
rg_flags = be32_to_cpu(str->rg_flags);
rg_flags &= ~GFS2_RDF_MASK;
rgd->rd_flags &= GFS2_RDF_MASK;
rgd->rd_flags |= rg_flags;
rgd->rd_free = be32_to_cpu(str->rg_free);
rgd->rd_dinodes = be32_to_cpu(str->rg_dinodes);
rgd->rd_igeneration = be64_to_cpu(str->rg_igeneration);
@ -773,7 +774,7 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
for (x = 0; x < length; x++)
clear_bit(GBF_FULL, &rgd->rd_bits[x].bi_flags);
gfs2_rgrp_in(rgd, (rgd->rd_bits[0].bi_bh)->b_data);
rgd->rd_flags |= GFS2_RDF_UPTODATE;
rgd->rd_flags |= (GFS2_RDF_UPTODATE | GFS2_RDF_CHECK);
}
spin_lock(&sdp->sd_rindex_spin);