fcntl: refuse F_SET_RW_HINT on an immutable inode

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An immutable inode is never written to so write hints are pointless.
Refuse the hint on an immutable inode the way setattr(), fallocate() and
etxattr() refuse their changes.

Fixes: c75b1d9421 ("fs: add fcntl() interface for setting/getting write life time hints")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20261002-work-mount-fixes-4-v1-3-dd44b89d44ce@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

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Christian Brauner 2026-10-02 15:52:34 +02:00

parent 8189ab688f

commit b0d1022b9b

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fs/fcntl.c

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