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-rw-r--r--fs/btrfs/free-space-cache.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 7a15fcfb3e1f..181760f9d2ab 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -537,6 +537,13 @@ static int io_ctl_read_entry(struct io_ctl *io_ctl,
struct btrfs_free_space *entry, u8 *type)
{
struct btrfs_free_space_entry *e;
+ int ret;
+
+ if (!io_ctl->cur) {
+ ret = io_ctl_check_crc(io_ctl, io_ctl->index);
+ if (ret)
+ return ret;
+ }
e = io_ctl->cur;
entry->offset = le64_to_cpu(e->offset);
@@ -550,10 +557,7 @@ static int io_ctl_read_entry(struct io_ctl *io_ctl,
io_ctl_unmap_page(io_ctl);
- if (io_ctl->index >= io_ctl->num_pages)
- return 0;
-
- return io_ctl_check_crc(io_ctl, io_ctl->index);
+ return 0;
}
static int io_ctl_read_bitmap(struct io_ctl *io_ctl,
@@ -561,9 +565,6 @@ static int io_ctl_read_bitmap(struct io_ctl *io_ctl,
{
int ret;
- if (io_ctl->cur && io_ctl->cur != io_ctl->orig)
- io_ctl_unmap_page(io_ctl);
-
ret = io_ctl_check_crc(io_ctl, io_ctl->index);
if (ret)
return ret;
@@ -699,6 +700,8 @@ int __load_free_space_cache(struct btrfs_root *root, struct inode *inode,
num_entries--;
}
+ io_ctl_unmap_page(&io_ctl);
+
/*
* We add the bitmaps at the end of the entries in order that
* the bitmap entries are added to the cache.