binfmt_misc: factor out the entry removal

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Both write handlers open-code the same removal dance - grab the root
inode lock, unlink, unlock - each carrying a verbatim copy of the
same eleven-line locking comment, and bm_entry_write() reuses its
inode variable for the root inode halfway through to pull it off.
Move the dance into bm_remove_entry() and bm_remove_all_entries()
and the locking rules into the kernel-doc of remove_binfmt_handler()
which both helpers wrap.

No functional change.

Link: https://patch.msgid.link/20260710-work-binfmt_misc-locking-v3-17-a162f7cb58d6@kernel.org
Reviewed-by: Jori Koolstra <jkoolstra@xs4all.nl>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

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Christian Brauner 2026-07-10 11:33:18 +02:00

parent 9eeca53dac

commit b0e42f0dbe

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1 changed files with 40 additions and 44 deletions

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fs/binfmt_misc.c

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