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Date: Fri, 22 Jul 2022 13:31:37 -0400 From: "Martin K. Petersen" <martin.petersen@...cle.com> To: Eric Biggers <ebiggers@...nel.org> Cc: linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net, linux-xfs@...r.kernel.org, linux-api@...r.kernel.org, linux-fscrypt@...r.kernel.org, linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, Keith Busch <kbusch@...nel.org>, Christoph Hellwig <hch@....de> Subject: Re: [PATCH v4 1/9] statx: add direct I/O alignment information Eric, > Therefore, let's expose this information via statx(). Add the > STATX_DIOALIGN flag and two new statx fields associated with it: > > * stx_dio_mem_align: the alignment (in bytes) required for user memory > buffers for DIO, or 0 if DIO is not supported on the file. > > * stx_dio_offset_align: the alignment (in bytes) required for file > offsets and I/O segment lengths for DIO, or 0 if DIO is not supported > on the file. This will only be nonzero if stx_dio_mem_align is > nonzero, and vice versa. Nice to finally have a generic interface for this! Reviewed-by: Martin K. Petersen <martin.petersen@...cle.com> -- Martin K. Petersen Oracle Linux Engineering
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