fscrypt: Remove fscrypt_dio_supported()

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On block-based filesystems, fscrypt file contents encryption is now
always implemented using blk-crypto.  This implementation supports
direct I/O.

Therefore, fscrypt_dio_supported() now always returns true, except in
the edge case where statx(STATX_DIOALIGN) is called on an encrypted
regular file that hasn't had its key set up.  But that was really a
workaround rather than the desired behavior, so we can disregard it.

Thus, fscrypt_dio_supported() is no longer needed.  Remove it.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260713023708.9245-14-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

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This commit is contained in:

Eric Biggers 2026-07-12 22:37:04 -04:00

parent 170c3aa85d

commit 35f440660f

4 changed files with 3 additions and 64 deletions

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43

fs/crypto/inline_crypt.c

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11

fs/ext4/inode.c

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6

fs/f2fs/file.c

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7

include/linux/fscrypt.h

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