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-rw-r--r--fs/reiserfs/stree.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index 6ddcecb4e8ab..960c9114f6d3 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -529,6 +529,14 @@ static void search_by_key_reada(struct super_block *s,
for (i = 0; i < num; i++) {
bh[i] = sb_getblk(s, b[i]);
}
+ /*
+ * We are going to read some blocks on which we
+ * have a reference. It's safe, though we might be
+ * reading blocks concurrently changed if we release
+ * the lock. But it's still fine because we check later
+ * if the tree changed
+ */
+ reiserfs_write_unlock(s);
for (j = 0; j < i; j++) {
/*
* note, this needs attention if we are getting rid of the BKL
@@ -626,10 +634,12 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s
if ((bh = last_element->pe_buffer =
sb_getblk(sb, block_number))) {
if (!buffer_uptodate(bh) && reada_count > 1)
+ /* will unlock the write lock */
search_by_key_reada(sb, reada_bh,
reada_blocks, reada_count);
+ else
+ reiserfs_write_unlock(sb);
ll_rw_block(READ, 1, &bh);
- reiserfs_write_unlock(sb);
wait_on_buffer(bh);
reiserfs_write_lock(sb);
if (!buffer_uptodate(bh))