Messages in this thread | | | Date | Mon, 18 Dec 2017 04:32:02 -0800 | From | Christoph Hellwig <> | Subject | Re: [PATCH] ext4: delayed inode update for the consistency of file size after a crash |
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> that update of the timestamp and i_size needs to be moved to an I/O > completion handler. We do this already to convert unwritten requests > to be written in fs/ext4/page_io.c. See ext4_put_io_end_defer() in > fs/ext4/page_io.c; if we need to convert unwritten extents the > EXT4_IO_END_UNWRITTEN flag is set, and ext4_add_complete_io() tacks > the io_end queue onto a workqueue. This infrastructure could be made > more general so that it can do other work after the I/O has been > completed, including the i_size update.
That's what we do for the i_size update in XFS.
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