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btrfs: initialize last_extent_end to fix -Wmaybe-uninitialized warning in extent_fiemap()

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There's a warning (probably on some older compiler version):

fs/btrfs/fiemap.c: warning: 'last_extent_end' may be used uninitialized in this function [-Wmaybe-uninitialized]:  => 822:19

Initialize the variable to 0 although it's not necessary as it's either
properly set or not used after an error. The called function is in the
same file so this is a false alert but we want to fix all
-Wmaybe-uninitialized reports.

Link: https://lore.kernel.org/all/20240819070639.2558629-1-geert@linux-m68k.org/
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2024-08-21 01:19:57 +02:00
parent 2d34472610
commit 33f58a0480
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/fiemap.c
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@ -637,7 +637,7 @@ static int extent_fiemap(struct btrfs_inode *inode,
struct btrfs_path *path;
struct fiemap_cache cache = { 0 };
struct btrfs_backref_share_check_ctx *backref_ctx;
u64 last_extent_end;
u64 last_extent_end = 0;
u64 prev_extent_end;
u64 range_start;
u64 range_end;