On Tue, Jun 24, 2025 at 12:12:09PM +0000, 陈涛涛 Taotao Chen wrote: > From: Taotao Chen <chentaotao@xxxxxxxxxxxxxx> > > Add support for the IOCB_DONTCACHE flag in ext4_write_begin() and > ext4_da_write_begin(). When set in the kiocb, the FGP_DONTCACHE bit > is passed to the page cache lookup, preventing written pages from > being retained in the cache. > > Only the handling logic is implemented here; the behavior remains > inactive until ext4 advertises support via FOP_DONTCACHE. > > This change relies on prior patches that refactor the write_begin > interface to use struct kiocb and introduce DONTCACHE handling in ext4. > > Part of a series refactoring address_space_operations write_begin and > write_end callbacks to use struct kiocb for passing write context and > flags. > > Signed-off-by: Taotao Chen <chentaotao@xxxxxxxxxxxxxx> Acked-by: Theodore Ts'o <tytso@xxxxxxx>
