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authorMark Fasheh <mark.fasheh@oracle.com>2006-05-03 04:54:45 +0400
committerMark Fasheh <mark.fasheh@oracle.com>2006-08-07 22:04:07 +0400
commit101ebf256de54e78e6d3277adacf656e125a2c5a (patch)
tree73f19064663888bb5379c746459090a3807a2a47 /fs/ocfs2
parent9acd72f4240429dfd762c9a2c7eb5c18b5d32529 (diff)
downloadlinux-101ebf256de54e78e6d3277adacf656e125a2c5a.tar.xz
ocfs2: limit cluster bitmap information saved at mount
We were storing cluster count on the ocfs2_super structure, but never actually using it so remove that. Also, we don't want to populate the uptodate cache with the unlocked block read - it is technically safe as is, but we should change it for correctness. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2')
-rw-r--r--fs/ocfs2/ocfs2.h1
-rw-r--r--fs/ocfs2/super.c8
2 files changed, 6 insertions, 3 deletions
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index cd4a6f253d13..d52100d49b6c 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -197,7 +197,6 @@ struct ocfs2_super
struct ocfs2_node_map recovery_map;
struct ocfs2_node_map umount_map;
- u32 num_clusters;
u64 root_blkno;
u64 system_dir_blkno;
u64 bitmap_blkno;
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 382706a67ffd..d17e33e66a1e 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1442,8 +1442,13 @@ static int ocfs2_initialize_super(struct super_block *sb,
osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
+ /* We don't have a cluster lock on the bitmap here because
+ * we're only interested in static information and the extra
+ * complexity at mount time isn't worht it. Don't pass the
+ * inode in to the read function though as we don't want it to
+ * be put in the cache. */
status = ocfs2_read_block(osb, osb->bitmap_blkno, &bitmap_bh, 0,
- inode);
+ NULL);
iput(inode);
if (status < 0) {
mlog_errno(status);
@@ -1452,7 +1457,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
di = (struct ocfs2_dinode *) bitmap_bh->b_data;
osb->bitmap_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg);
- osb->num_clusters = le32_to_cpu(di->id1.bitmap1.i_total);
brelse(bitmap_bh);
mlog(0, "cluster bitmap inode: %llu, clusters per group: %u\n",
(unsigned long long)osb->bitmap_blkno, osb->bitmap_cpg);