VFS: add start_creating_killable() and start_removing_killable()

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These are similar to start_creating() and start_removing(), but allow a
fatal signal to abort waiting for the lock.

They are used in btrfs for subvol creation and removal.

btrfs_may_create() no longer needs IS_DEADDIR() and
start_creating_killable() includes that check.

Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: NeilBrown <neil@brown.name>
Link: https://patch.msgid.link/20251113002050.676694-10-neilb@ownmail.net
Tested-by: syzbot@syzkaller.appspotmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>

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NeilBrown 2025-11-13 11:18:32 +11:00 • committed by Christian Brauner

parent 7bb1eb45e4

commit ff7c4ea11a

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41

fs/btrfs/ioctl.c

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80

fs/namei.c

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6

include/linux/namei.h

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