vfs: check file ranges before cloning files

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Move the file range checks from vfs_clone_file_prep into a separate
generic_remap_checks function so that all the checks are collected in a
central location.  This forms the basis for adding more checks from
generic_write_checks that will make cloning's input checking more
consistent with write input checking.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

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Darrick J. Wong 2018-10-30 10:40:31 +11:00 • committed by Dave Chinner

parent 5b49f64db2

commit 1383a7ed67

5 changed files with 90 additions and 47 deletions

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9

include/linux/fs.h

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