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xfs: create a helper to compute leftovers of realtime extents

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Create a helper to compute the misalignment between a file extent
(xfs_extlen_t) and a realtime extent.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong
2023-10-16 09:34:39 -07:00
parent fa5a387230
commit 68db60bf01
6 changed files with 19 additions and 7 deletions
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4
fs/xfs/libxfs/xfs_bmap.c
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@@ -2989,7 +2989,7 @@ xfs_bmap_extsize_align(
* If realtime, and the result isn't a multiple of the realtime
* extent size we need to remove blocks until it is.
*/
if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) {
if (rt && (temp = xfs_extlen_to_rtxmod(mp, align_alen))) {
/*
* We're not covering the original request, or
* we won't be able to once we fix the length.
@@ -3016,7 +3016,7 @@ xfs_bmap_extsize_align(
else {
align_alen -= orig_off - align_off;
align_off = orig_off;
align_alen -= align_alen % mp->m_sb.sb_rextsize;
align_alen -= xfs_extlen_to_rtxmod(mp, align_alen);
}
/*
* Result doesn't cover the request, fail it.