btrfs: properly set the termination value of ctx->pos in readdir

[linux-2.6-block.git] / fs / btrfs / inode-map.c

diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
index 767a6056ac45afce29844e469f582baec8ef28cd..e50316c4af157183d3862fac8e318abe7eb66ecd 100644 (file)
--- a/fs/btrfs/inode-map.c
+++ b/fs/btrfs/inode-map.c
@@ -48,7 +48,7 @@ static int caching_kthread(void *data)
        /* Since the commit root is read-only, we can safely skip locking. */
        path->skip_locking = 1;
        path->search_commit_root = 1;
-       path->reada = 2;
+       path->reada = READA_FORWARD;
 
        key.objectid = BTRFS_FIRST_FREE_OBJECTID;
        key.offset = 0;
@@ -282,7 +282,7 @@ void btrfs_unpin_free_ino(struct btrfs_root *root)
        }
 }
 
-#define INIT_THRESHOLD (((1024 * 32) / 2) / sizeof(struct btrfs_free_space))
+#define INIT_THRESHOLD ((SZ_32K / 2) / sizeof(struct btrfs_free_space))
 #define INODES_PER_BITMAP (PAGE_CACHE_SIZE * 8)
 
 /*
@@ -334,7 +334,7 @@ static bool use_bitmap(struct btrfs_free_space_ctl *ctl,
        return true;
 }
 
-static struct btrfs_free_space_op free_ino_op = {
+static const struct btrfs_free_space_op free_ino_op = {
        .recalc_thresholds      = recalculate_thresholds,
        .use_bitmap             = use_bitmap,
 };
@@ -356,7 +356,7 @@ static bool pinned_use_bitmap(struct btrfs_free_space_ctl *ctl,
        return false;
 }
 
-static struct btrfs_free_space_op pinned_free_ino_op = {
+static const struct btrfs_free_space_op pinned_free_ino_op = {
        .recalc_thresholds      = pinned_recalc_thresholds,
        .use_bitmap             = pinned_use_bitmap,
 };
@@ -515,7 +515,7 @@ out:
        return ret;
 }
 
-static int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid)
+int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid)
 {
        struct btrfs_path *path;
        int ret;
@@ -555,13 +555,6 @@ int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid)
        int ret;
        mutex_lock(&root->objectid_mutex);
 
-       if (unlikely(root->highest_objectid < BTRFS_FIRST_FREE_OBJECTID)) {
-               ret = btrfs_find_highest_objectid(root,
-                                                 &root->highest_objectid);
-               if (ret)
-                       goto out;
-       }
-
        if (unlikely(root->highest_objectid >= BTRFS_LAST_FREE_OBJECTID)) {
                ret = -ENOSPC;
                goto out;