diff options
| author | Bob Peterson <rpeterso@redhat.com> | 2011-03-22 13:55:23 -0400 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2011-04-20 08:54:26 +0100 |
| commit | ec038c826b5c3c163ad1673390f10e869020c28c (patch) | |
| tree | 11d97ed7a40033e1bf113e3ca7fa28e4f22bfe0d /fs/gfs2 | |
| parent | d24a7a439a329b60f8e168c03e80566519e09be2 (diff) | |
GFS2: pass leaf_bh into leaf_dealloc
Function foreach_leaf used to look up the leaf block address and get
a buffer_head. Then it would call leaf_dealloc which did the same
lookup. This patch combines the two operations by making foreach_leaf
pass the leaf bh to leaf_dealloc.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/dir.c | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index bd575871f0f2..1f5a7ac97f7d 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -86,7 +86,8 @@ typedef int (*gfs2_dscan_t)(const struct gfs2_dirent *dent, const struct qstr *name, void *opaque); static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, - u64 leaf_no, int last_dealloc); + u64 leaf_no, struct buffer_head *leaf_bh, + int last_dealloc); int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block, struct buffer_head **bhp) @@ -1821,8 +1822,9 @@ static int foreach_leaf(struct gfs2_inode *dip) len = 1 << (dip->i_depth - be16_to_cpu(leaf->lf_depth)); next_index = (index & ~(len - 1)) + len; last = ((next_index >= hsize) ? 1 : 0); + error = leaf_dealloc(dip, index, len, leaf_no, bh, + last); brelse(bh); - error = leaf_dealloc(dip, index, len, leaf_no, last); if (error) goto out; index = next_index; @@ -1847,13 +1849,15 @@ out: * @index: the hash table offset in the directory * @len: the number of pointers to this leaf * @leaf_no: the leaf number + * @leaf_bh: buffer_head for the starting leaf * last_dealloc: 1 if this is the final dealloc for the leaf, else 0 * * Returns: errno */ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, - u64 leaf_no, int last_dealloc) + u64 leaf_no, struct buffer_head *leaf_bh, + int last_dealloc) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); struct gfs2_leaf *tmp_leaf; @@ -1885,14 +1889,18 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, goto out_qs; /* Count the number of leaves */ + bh = leaf_bh; for (blk = leaf_no; blk; blk = nblk) { - error = get_leaf(dip, blk, &bh); - if (error) - goto out_rlist; + if (blk != leaf_no) { + error = get_leaf(dip, blk, &bh); + if (error) + goto out_rlist; + } tmp_leaf = (struct gfs2_leaf *)bh->b_data; nblk = be64_to_cpu(tmp_leaf->lf_next); - brelse(bh); + if (blk != leaf_no) + brelse(bh); gfs2_rlist_add(sdp, &rlist, blk); l_blocks++; @@ -1916,13 +1924,18 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, if (error) goto out_rg_gunlock; + bh = leaf_bh; + for (blk = leaf_no; blk; blk = nblk) { - error = get_leaf(dip, blk, &bh); - if (error) - goto out_end_trans; + if (blk != leaf_no) { + error = get_leaf(dip, blk, &bh); + if (error) + goto out_end_trans; + } tmp_leaf = (struct gfs2_leaf *)bh->b_data; nblk = be64_to_cpu(tmp_leaf->lf_next); - brelse(bh); + if (blk != leaf_no) + brelse(bh); gfs2_free_meta(dip, blk, 1); gfs2_add_inode_blocks(&dip->i_inode, -1); |