@@ -2914,22 +2914,22 @@ static int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info)
{
u64 root_objectid = 0;
struct btrfs_root *gang[8];
- int i = 0;
- int err = 0;
- unsigned int ret = 0;
+ int ret = 0;
while (1) {
+ unsigned int found;
+
spin_lock(&fs_info->fs_roots_radix_lock);
- ret = radix_tree_gang_lookup(&fs_info->fs_roots_radix,
+ found = radix_tree_gang_lookup(&fs_info->fs_roots_radix,
(void **)gang, root_objectid,
ARRAY_SIZE(gang));
- if (!ret) {
+ if (!found) {
spin_unlock(&fs_info->fs_roots_radix_lock);
break;
}
- root_objectid = btrfs_root_id(gang[ret - 1]) + 1;
+ root_objectid = btrfs_root_id(gang[found - 1]) + 1;
- for (i = 0; i < ret; i++) {
+ for (int i = 0; i < found; i++) {
/* Avoid to grab roots in dead_roots. */
if (btrfs_root_refs(&gang[i]->root_item) == 0) {
gang[i] = NULL;
@@ -2940,24 +2940,25 @@ static int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info)
}
spin_unlock(&fs_info->fs_roots_radix_lock);
- for (i = 0; i < ret; i++) {
+ for (int i = 0; i < found; i++) {
if (!gang[i])
continue;
root_objectid = btrfs_root_id(gang[i]);
- err = btrfs_orphan_cleanup(gang[i]);
- if (err)
- goto out;
+ /*
+ * Continue to release the remaining roots after the first
+ * error without cleanup and preserve the first error
+ * for the return.
+ */
+ if (!ret)
+ ret = btrfs_orphan_cleanup(gang[i]);
btrfs_put_root(gang[i]);
}
+ if (ret)
+ break;
+
root_objectid++;
}
-out:
- /* Release the uncleaned roots due to error. */
- for (; i < ret; i++) {
- if (gang[i])
- btrfs_put_root(gang[i]);
- }
- return err;
+ return ret;
}
/*
Since err represents the function return value, rename it as ret, and rename the original ret, which serves as a helper return value, to found. Also, optimize the code to continue call btrfs_put_root() for the rest of the root if even after btrfs_orphan_cleanup() returns error. Signed-off-by: Anand Jain <anand.jain@oracle.com> --- v4: localize variable i in the for() v3: Add a code comment. v2: Rename to 'found' instead of 'ret2' (Josef). Call btrfs_put_root() in the while-loop, avoids use of the variable 'found' outside of the while loop (Qu). Use 'unsigned int i' instead of 'int' (Goffredo). fs/btrfs/disk-io.c | 37 +++++++++++++++++++------------------ 1 file changed, 19 insertions(+), 18 deletions(-)