iomap: provide more useful errors for invalid swap files

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Currently, for an invalid swap file, we print the same error message
regardless of the reason. This isn't very useful for an admin, who will
likely want to know why exactly they can't use their swap file. So,
let's add specific error messages for each reason, and also move the
bdev check after the flags checks, since the latter are more
fundamental.

Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

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Omar Sandoval 2018-05-16 11:13:34 -07:00 • committed by Darrick J. Wong

parent f7664b3197

commit ec601924df

1 changed files with 24 additions and 16 deletions

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fs/iomap.c

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