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super: skip dying superblocks early

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Make all iterators uniform by performing an early check whether the
superblock is dying.

Link: https://lore.kernel.org/r/20250329-work-freeze-v2-3-a47af37ecc3d@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2025-03-29 09:42:16 +01:00
parent 484caf5e11
commit 6920e3388b
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GPG key ID: 91C61BC06578DCA2
1 changed files with 6 additions and 0 deletions
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6
fs/super.c
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@ -925,6 +925,9 @@ void iterate_supers(void (*f)(struct super_block *, void *), void *arg)
list_for_each_entry(sb, &super_blocks, s_list) {
bool locked;
if (super_flags(sb, SB_DYING))
continue;
sb->s_count++;
spin_unlock(&sb_lock);
@ -962,6 +965,9 @@ void iterate_supers_type(struct file_system_type *type,
hlist_for_each_entry(sb, &type->fs_supers, s_instances) {
bool locked;
if (super_flags(sb, SB_DYING))
continue;
sb->s_count++;
spin_unlock(&sb_lock);