Add a comment explaining why we keep the BUG also use the already read
and cached value of extent ram bytes stored in 'ram_bytes'.
Signed-off-by: Nikolay Borisov <nborisov@xxxxxxxx>
---
fs/btrfs/inode.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6cb22d82e6aa..161439122a29 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1503,16 +1503,15 @@ static noinline int run_delalloc_nocow(struct inode *inode,
goto out_check;
nocow = true;
} else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
- extent_end = found_key.offset +
- btrfs_file_extent_ram_bytes(leaf, fi);
- extent_end = ALIGN(extent_end,
- fs_info->sectorsize);
+ extent_end = found_key.offset + ram_bytes;
+ extent_end = ALIGN(extent_end, fs_info->sectorsize);
/* Skip extents outside of our requested range */
if (extent_end <= start) {
path->slots[0]++;
goto next_slot;
}
} else {
+ /* If this triggers then we have a memory corruption */
BUG();
}
out_check:
--
2.17.1
