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authorSteven Whitehouse <swhiteho@redhat.com>2006-10-02 11:49:41 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2006-10-02 11:49:41 -0400
commit3cf1e7bed4681bdb1c14b6e146ae9c0afb6c1552 (patch)
treeef994734707067f4d254219048e5fbc923fb61e3
parent2e565bb69ce2184eabf4f43e64afc79c46f46204 (diff)
downloadop-kernel-dev-3cf1e7bed4681bdb1c14b6e146ae9c0afb6c1552.zip
op-kernel-dev-3cf1e7bed4681bdb1c14b6e146ae9c0afb6c1552.tar.gz
[GFS2] Remove duplicate sb reading code
For some reason we had two different sets of code for reading in the superblock. This removes one of them in favour of the other. Also we don't need the temporary buffer for the sb since we already have one in the gfs2 sb itself. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
-rw-r--r--fs/gfs2/ops_fstype.c41
-rw-r--r--fs/gfs2/super.c4
-rw-r--r--fs/gfs2/super.h1
3 files changed, 16 insertions, 30 deletions
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index a9aa2ed..178b339 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -116,7 +116,7 @@ static void init_vfs(struct super_block *sb, unsigned noatime)
static int init_names(struct gfs2_sbd *sdp, int silent)
{
- struct gfs2_sb *sb = NULL;
+ struct page *page;
char *proto, *table;
int error = 0;
@@ -126,37 +126,23 @@ static int init_names(struct gfs2_sbd *sdp, int silent)
/* Try to autodetect */
if (!proto[0] || !table[0]) {
- struct buffer_head *bh;
- bh = sb_getblk(sdp->sd_vfs,
- GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift);
- lock_buffer(bh);
- clear_buffer_uptodate(bh);
- clear_buffer_dirty(bh);
- unlock_buffer(bh);
- ll_rw_block(READ, 1, &bh);
- wait_on_buffer(bh);
-
- if (!buffer_uptodate(bh)) {
- brelse(bh);
- return -EIO;
- }
-
- sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL);
- if (!sb) {
- brelse(bh);
- return -ENOMEM;
- }
- gfs2_sb_in(sb, bh->b_data);
- brelse(bh);
-
- error = gfs2_check_sb(sdp, sb, silent);
+ struct gfs2_sb *sb;
+ page = gfs2_read_super(sdp->sd_vfs, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift);
+ if (!page)
+ return -ENOBUFS;
+ sb = kmap(page);
+ gfs2_sb_in(&sdp->sd_sb, sb);
+ kunmap(page);
+ __free_page(page);
+
+ error = gfs2_check_sb(sdp, &sdp->sd_sb, silent);
if (error)
goto out;
if (!proto[0])
- proto = sb->sb_lockproto;
+ proto = sdp->sd_sb.sb_lockproto;
if (!table[0])
- table = sb->sb_locktable;
+ table = sdp->sd_sb.sb_locktable;
}
if (!table[0])
@@ -166,7 +152,6 @@ static int init_names(struct gfs2_sbd *sdp, int silent)
snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table);
out:
- kfree(sb);
return error;
}
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index f6ce5e4..6a78b1b 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -180,7 +180,7 @@ static int end_bio_io_page(struct bio *bio, unsigned int bytes_done, int error)
return 0;
}
-static struct page *gfs2_read_super(struct super_block *sb, sector_t sector)
+struct page *gfs2_read_super(struct super_block *sb, sector_t sector)
{
struct page *page;
struct bio *bio;
@@ -205,7 +205,7 @@ static struct page *gfs2_read_super(struct super_block *sb, sector_t sector)
bio->bi_end_io = end_bio_io_page;
bio->bi_private = page;
- submit_bio(READ_SYNC, bio);
+ submit_bio(READ_SYNC | (1 << BIO_RW_META), bio);
wait_on_page_locked(page);
bio_put(bio);
if (!PageUptodate(page)) {
diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h
index 5fa5119..5bb443a 100644
--- a/fs/gfs2/super.h
+++ b/fs/gfs2/super.h
@@ -16,6 +16,7 @@ void gfs2_tune_init(struct gfs2_tune *gt);
int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb *sb, int silent);
int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent);
+struct page *gfs2_read_super(struct super_block *sb, sector_t sector);
static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
{
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