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Message-ID: <20211130185916.GG8467@magnolia>
Date: Tue, 30 Nov 2021 10:59:16 -0800
From: "Darrick J. Wong" <djwong@...nel.org>
To: Christoph Hellwig <hch@....de>
Cc: Dan Williams <dan.j.williams@...el.com>,
Mike Snitzer <snitzer@...hat.com>,
Ira Weiny <ira.weiny@...el.com>, dm-devel@...hat.com,
linux-xfs@...r.kernel.org, nvdimm@...ts.linux.dev,
linux-s390@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-erofs@...ts.ozlabs.org, linux-ext4@...r.kernel.org,
virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH 23/29] xfs: pass the mapping flags to xfs_bmbt_to_iomap
On Mon, Nov 29, 2021 at 11:21:57AM +0100, Christoph Hellwig wrote:
> To prepare for looking at the IOMAP_DAX flag in xfs_bmbt_to_iomap pass in
> the input mapping flags to xfs_bmbt_to_iomap.
>
> Signed-off-by: Christoph Hellwig <hch@....de>
Thanks for changing the argument names to be less confusing,
Reviewed-by: Darrick J. Wong <djwong@...nel.org>
--D
> ---
> fs/xfs/libxfs/xfs_bmap.c | 4 ++--
> fs/xfs/xfs_aops.c | 2 +-
> fs/xfs/xfs_iomap.c | 35 ++++++++++++++++++++---------------
> fs/xfs/xfs_iomap.h | 5 +++--
> fs/xfs/xfs_pnfs.c | 2 +-
> 5 files changed, 27 insertions(+), 21 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
> index 4dccd4d90622d..74198dd82b035 100644
> --- a/fs/xfs/libxfs/xfs_bmap.c
> +++ b/fs/xfs/libxfs/xfs_bmap.c
> @@ -4551,7 +4551,7 @@ xfs_bmapi_convert_delalloc(
> * the extent. Just return the real extent at this offset.
> */
> if (!isnullstartblock(bma.got.br_startblock)) {
> - xfs_bmbt_to_iomap(ip, iomap, &bma.got, flags);
> + xfs_bmbt_to_iomap(ip, iomap, &bma.got, 0, flags);
> *seq = READ_ONCE(ifp->if_seq);
> goto out_trans_cancel;
> }
> @@ -4598,7 +4598,7 @@ xfs_bmapi_convert_delalloc(
> XFS_STATS_INC(mp, xs_xstrat_quick);
>
> ASSERT(!isnullstartblock(bma.got.br_startblock));
> - xfs_bmbt_to_iomap(ip, iomap, &bma.got, flags);
> + xfs_bmbt_to_iomap(ip, iomap, &bma.got, 0, flags);
> *seq = READ_ONCE(ifp->if_seq);
>
> if (whichfork == XFS_COW_FORK)
> diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
> index c8c15c3c31471..6ac3449a68ba0 100644
> --- a/fs/xfs/xfs_aops.c
> +++ b/fs/xfs/xfs_aops.c
> @@ -359,7 +359,7 @@ xfs_map_blocks(
> isnullstartblock(imap.br_startblock))
> goto allocate_blocks;
>
> - xfs_bmbt_to_iomap(ip, &wpc->iomap, &imap, 0);
> + xfs_bmbt_to_iomap(ip, &wpc->iomap, &imap, 0, 0);
> trace_xfs_map_blocks_found(ip, offset, count, whichfork, &imap);
> return 0;
> allocate_blocks:
> diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
> index 9b7f92c6aef33..d6beb1502f8bc 100644
> --- a/fs/xfs/xfs_iomap.c
> +++ b/fs/xfs/xfs_iomap.c
> @@ -53,7 +53,8 @@ xfs_bmbt_to_iomap(
> struct xfs_inode *ip,
> struct iomap *iomap,
> struct xfs_bmbt_irec *imap,
> - u16 flags)
> + unsigned int mapping_flags,
> + u16 iomap_flags)
> {
> struct xfs_mount *mp = ip->i_mount;
> struct xfs_buftarg *target = xfs_inode_buftarg(ip);
> @@ -79,7 +80,7 @@ xfs_bmbt_to_iomap(
> iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount);
> iomap->bdev = target->bt_bdev;
> iomap->dax_dev = target->bt_daxdev;
> - iomap->flags = flags;
> + iomap->flags = iomap_flags;
>
> if (xfs_ipincount(ip) &&
> (ip->i_itemp->ili_fsync_fields & ~XFS_ILOG_TIMESTAMP))
> @@ -799,7 +800,7 @@ xfs_direct_write_iomap_begin(
>
> xfs_iunlock(ip, lockmode);
> trace_xfs_iomap_found(ip, offset, length, XFS_DATA_FORK, &imap);
> - return xfs_bmbt_to_iomap(ip, iomap, &imap, iomap_flags);
> + return xfs_bmbt_to_iomap(ip, iomap, &imap, flags, iomap_flags);
>
> allocate_blocks:
> error = -EAGAIN;
> @@ -830,18 +831,19 @@ xfs_direct_write_iomap_begin(
> return error;
>
> trace_xfs_iomap_alloc(ip, offset, length, XFS_DATA_FORK, &imap);
> - return xfs_bmbt_to_iomap(ip, iomap, &imap, iomap_flags | IOMAP_F_NEW);
> + return xfs_bmbt_to_iomap(ip, iomap, &imap, flags,
> + iomap_flags | IOMAP_F_NEW);
>
> out_found_cow:
> xfs_iunlock(ip, lockmode);
> length = XFS_FSB_TO_B(mp, cmap.br_startoff + cmap.br_blockcount);
> trace_xfs_iomap_found(ip, offset, length - offset, XFS_COW_FORK, &cmap);
> if (imap.br_startblock != HOLESTARTBLOCK) {
> - error = xfs_bmbt_to_iomap(ip, srcmap, &imap, 0);
> + error = xfs_bmbt_to_iomap(ip, srcmap, &imap, flags, 0);
> if (error)
> return error;
> }
> - return xfs_bmbt_to_iomap(ip, iomap, &cmap, IOMAP_F_SHARED);
> + return xfs_bmbt_to_iomap(ip, iomap, &cmap, flags, IOMAP_F_SHARED);
>
> out_unlock:
> if (lockmode)
> @@ -1051,23 +1053,24 @@ xfs_buffered_write_iomap_begin(
> */
> xfs_iunlock(ip, XFS_ILOCK_EXCL);
> trace_xfs_iomap_alloc(ip, offset, count, allocfork, &imap);
> - return xfs_bmbt_to_iomap(ip, iomap, &imap, IOMAP_F_NEW);
> + return xfs_bmbt_to_iomap(ip, iomap, &imap, flags, IOMAP_F_NEW);
>
> found_imap:
> xfs_iunlock(ip, XFS_ILOCK_EXCL);
> - return xfs_bmbt_to_iomap(ip, iomap, &imap, 0);
> + return xfs_bmbt_to_iomap(ip, iomap, &imap, flags, 0);
>
> found_cow:
> xfs_iunlock(ip, XFS_ILOCK_EXCL);
> if (imap.br_startoff <= offset_fsb) {
> - error = xfs_bmbt_to_iomap(ip, srcmap, &imap, 0);
> + error = xfs_bmbt_to_iomap(ip, srcmap, &imap, flags, 0);
> if (error)
> return error;
> - return xfs_bmbt_to_iomap(ip, iomap, &cmap, IOMAP_F_SHARED);
> + return xfs_bmbt_to_iomap(ip, iomap, &cmap, flags,
> + IOMAP_F_SHARED);
> }
>
> xfs_trim_extent(&cmap, offset_fsb, imap.br_startoff - offset_fsb);
> - return xfs_bmbt_to_iomap(ip, iomap, &cmap, 0);
> + return xfs_bmbt_to_iomap(ip, iomap, &cmap, flags, 0);
>
> out_unlock:
> xfs_iunlock(ip, XFS_ILOCK_EXCL);
> @@ -1176,7 +1179,8 @@ xfs_read_iomap_begin(
> if (error)
> return error;
> trace_xfs_iomap_found(ip, offset, length, XFS_DATA_FORK, &imap);
> - return xfs_bmbt_to_iomap(ip, iomap, &imap, shared ? IOMAP_F_SHARED : 0);
> + return xfs_bmbt_to_iomap(ip, iomap, &imap, flags,
> + shared ? IOMAP_F_SHARED : 0);
> }
>
> const struct iomap_ops xfs_read_iomap_ops = {
> @@ -1235,7 +1239,8 @@ xfs_seek_iomap_begin(
> if (data_fsb < cow_fsb + cmap.br_blockcount)
> end_fsb = min(end_fsb, data_fsb);
> xfs_trim_extent(&cmap, offset_fsb, end_fsb);
> - error = xfs_bmbt_to_iomap(ip, iomap, &cmap, IOMAP_F_SHARED);
> + error = xfs_bmbt_to_iomap(ip, iomap, &cmap, flags,
> + IOMAP_F_SHARED);
> /*
> * This is a COW extent, so we must probe the page cache
> * because there could be dirty page cache being backed
> @@ -1257,7 +1262,7 @@ xfs_seek_iomap_begin(
> imap.br_state = XFS_EXT_NORM;
> done:
> xfs_trim_extent(&imap, offset_fsb, end_fsb);
> - error = xfs_bmbt_to_iomap(ip, iomap, &imap, 0);
> + error = xfs_bmbt_to_iomap(ip, iomap, &imap, flags, 0);
> out_unlock:
> xfs_iunlock(ip, lockmode);
> return error;
> @@ -1304,7 +1309,7 @@ xfs_xattr_iomap_begin(
> if (error)
> return error;
> ASSERT(nimaps);
> - return xfs_bmbt_to_iomap(ip, iomap, &imap, 0);
> + return xfs_bmbt_to_iomap(ip, iomap, &imap, flags, 0);
> }
>
> const struct iomap_ops xfs_xattr_iomap_ops = {
> diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h
> index f1a281ab9328c..657cc02290f22 100644
> --- a/fs/xfs/xfs_iomap.h
> +++ b/fs/xfs/xfs_iomap.h
> @@ -17,8 +17,9 @@ int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
> xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip,
> xfs_fileoff_t end_fsb);
>
> -int xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
> - struct xfs_bmbt_irec *, u16);
> +int xfs_bmbt_to_iomap(struct xfs_inode *ip, struct iomap *iomap,
> + struct xfs_bmbt_irec *imap, unsigned int mapping_flags,
> + u16 iomap_flags);
>
> int xfs_zero_range(struct xfs_inode *ip, loff_t pos, loff_t len,
> bool *did_zero);
> diff --git a/fs/xfs/xfs_pnfs.c b/fs/xfs/xfs_pnfs.c
> index 5e1d29d8b2e73..7ce1ea11fc3f3 100644
> --- a/fs/xfs/xfs_pnfs.c
> +++ b/fs/xfs/xfs_pnfs.c
> @@ -173,7 +173,7 @@ xfs_fs_map_blocks(
> }
> xfs_iunlock(ip, XFS_IOLOCK_EXCL);
>
> - error = xfs_bmbt_to_iomap(ip, iomap, &imap, 0);
> + error = xfs_bmbt_to_iomap(ip, iomap, &imap, 0, 0);
> *device_generation = mp->m_generation;
> return error;
> out_unlock:
> --
> 2.30.2
>
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