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(parent: 6fe7b99) | patch
iomap: move the iomap_dio_rw ->end_io callback into a structure
authorChristoph Hellwig <hch@lst.de>
Thu, 19 Sep 2019 22:32:45 +0000 (15:32 -0700)
committerDarrick J. Wong <darrick.wong@oracle.com>
Thu, 19 Sep 2019 22:32:45 +0000 (15:32 -0700)
commit838c4f3d7515efe9d0e32c846fb5d102b6d8a29d
treecd50fb73997130df5bd87700861aae7663702ed4tree | snapshot
parent6fe7b9901400152238e1b76198747f6716c78aadcommit | diff
iomap: move the iomap_dio_rw ->end_io callback into a structure

Add a new iomap_dio_ops structure that for now just contains the end_io
handler.  This avoid storing the function pointer in a mutable structure,
which is a possible exploit vector for kernel code execution, and prepares
for adding a submit_io handler that btrfs needs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
fs/iomap/direct-io.c diff | blob | history
fs/xfs/xfs_file.c diff | blob | history
include/linux/iomap.h diff | blob | history
Domain: System / Kernel;