From 4e700ac62ac12ffe8579680e6987b27066339d71 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Thu, 25 Sep 2025 19:23:22 +0930 Subject: [PATCH] btrfs: remove unnecessary NULL fs_info check from find_lock_delalloc_range() [STATIC CHECK REPORT] Smatch is reporting that find_lock_delalloc_range() used to do a null pointer check before accessing fs_info, but now we're accessing it for sectorsize unconditionally. [FALSE ALERT] This is a false alert, the existing null pointer check is introduced in commit f7b12a62f008 ("btrfs: replace BTRFS_MAX_EXTENT_SIZE with fs_info->max_extent_size"), but way before that, commit 7c0260ee098d ("btrfs: tests, require fs_info for root") is already forcing every btrfs_root to have a correct fs_info pointer. So there is no way that btrfs_root::fs_info is NULL. [FIX] Just remove the unnecessary NULL pointer checker. Reported-by: kernel test robot Reported-by: Dan Carpenter Fixes: f7b12a62f008 ("btrfs: replace BTRFS_MAX_EXTENT_SIZE with fs_info->max_extent_size") Closes: https://lore.kernel.org/r/202509250925.4L4JQTtn-lkp@intel.com/ Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 23273d0e6f224..3804029978ea4 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -374,8 +374,7 @@ noinline_for_stack bool find_lock_delalloc_range(struct inode *inode, struct extent_io_tree *tree = &BTRFS_I(inode)->io_tree; const u64 orig_start = *start; const u64 orig_end = *end; - /* The sanity tests may not set a valid fs_info. */ - u64 max_bytes = fs_info ? fs_info->max_extent_size : BTRFS_MAX_EXTENT_SIZE; + u64 max_bytes = fs_info->max_extent_size; u64 delalloc_start; u64 delalloc_end; bool found; -- 2.47.3