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| author | Christoph Hellwig <hch@lst.de> | 2019-09-19 15:32:45 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-09-19 15:32:45 -0700 |
| commit | 838c4f3d7515efe9d0e32c846fb5d102b6d8a29d (patch) | |
| tree | cd50fb73997130df5bd87700861aae7663702ed4 /fs/xfs | |
| parent | 6fe7b9901400152238e1b76198747f6716c78aad (diff) | |
| download | linux-838c4f3d7515efe9d0e32c846fb5d102b6d8a29d.tar.gz linux-838c4f3d7515efe9d0e32c846fb5d102b6d8a29d.tar.bz2 linux-838c4f3d7515efe9d0e32c846fb5d102b6d8a29d.zip | |
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>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_file.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 74411296f6b5..21bd3d575aaa 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -442,6 +442,10 @@ out: return error; } +static const struct iomap_dio_ops xfs_dio_write_ops = { + .end_io = xfs_dio_write_end_io, +}; + /* * xfs_file_dio_aio_write - handle direct IO writes * @@ -542,7 +546,7 @@ xfs_file_dio_aio_write( } trace_xfs_file_direct_write(ip, count, iocb->ki_pos); - ret = iomap_dio_rw(iocb, from, &xfs_iomap_ops, xfs_dio_write_end_io); + ret = iomap_dio_rw(iocb, from, &xfs_iomap_ops, &xfs_dio_write_ops); /* * If unaligned, this is the only IO in-flight. If it has not yet |