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Date: Tue, 21 Jul 2020 20:31:55 +0200 From: Christoph Hellwig <hch@....de> To: Dave Chinner <david@...morbit.com>, Goldwyn Rodrigues <rgoldwyn@...e.de> Cc: Damien Le Moal <damien.lemoal@....com>, Naohiro Aota <naohiro.aota@....com>, Johannes Thumshirn <jth@...nel.org>, Matthew Wilcox <willy@...radead.org>, linux-btrfs@...r.kernel.org, linux-fsdevel@...r.kernel.org, cluster-devel@...hat.com, linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org Subject: [PATCH 1/3] xfs: use ENOTBLK for direct I/O to buffered I/O fallback This is what the classic fs/direct-io.c implementation and thuse other file systems use. Signed-off-by: Christoph Hellwig <hch@....de> --- fs/xfs/xfs_file.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 00db81eac80d6c..a6ef90457abf97 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -505,7 +505,7 @@ xfs_file_dio_aio_write( */ if (xfs_is_cow_inode(ip)) { trace_xfs_reflink_bounce_dio_write(ip, iocb->ki_pos, count); - return -EREMCHG; + return -ENOTBLK; } iolock = XFS_IOLOCK_EXCL; } else { @@ -714,7 +714,7 @@ xfs_file_write_iter( * allow an operation to fall back to buffered mode. */ ret = xfs_file_dio_aio_write(iocb, from); - if (ret != -EREMCHG) + if (ret != -ENOTBLK) return ret; } -- 2.27.0
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