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| author | Darrick J. Wong <djwong@kernel.org> | 2024-02-15 09:25:48 +0100 |
|---|---|---|
| committer | Carlos Maiolino <cem@kernel.org> | 2024-02-15 12:56:43 +0100 |
| commit | 75805b294696872cee6ac1b4af6cf3ffa50b8e6d (patch) | |
| tree | 091e007835b5dad0e01e4833c9dccd1d2e44d5e6 | |
| parent | f4a0432b7e3730f9380afff6873ddcec82547de9 (diff) | |
| download | xfsprogs-dev-75805b294696872cee6ac1b4af6cf3ffa50b8e6d.tar.gz | |
xfs: create helpers for rtsummary block/wordcount computations
Source kernel commit: bd85af280de66a946022775a876edf0c553e3f35
Create helper functions that compute the number of blocks or words
necessary to store the rt summary file.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
| -rw-r--r-- | libxfs/xfs_rtbitmap.c | 29 | ||||
| -rw-r--r-- | libxfs/xfs_rtbitmap.h | 7 |
2 files changed, 36 insertions, 0 deletions
diff --git a/libxfs/xfs_rtbitmap.c b/libxfs/xfs_rtbitmap.c index f7be9ea5fe..44064b6b3e 100644 --- a/libxfs/xfs_rtbitmap.c +++ b/libxfs/xfs_rtbitmap.c @@ -1148,3 +1148,32 @@ xfs_rtbitmap_wordcount( blocks = xfs_rtbitmap_blockcount(mp, rtextents); return XFS_FSB_TO_B(mp, blocks) >> XFS_WORDLOG; } + +/* Compute the number of rtsummary blocks needed to track the given rt space. */ +xfs_filblks_t +xfs_rtsummary_blockcount( + struct xfs_mount *mp, + unsigned int rsumlevels, + xfs_extlen_t rbmblocks) +{ + unsigned long long rsumwords; + + rsumwords = (unsigned long long)rsumlevels * rbmblocks; + return XFS_B_TO_FSB(mp, rsumwords << XFS_WORDLOG); +} + +/* + * Compute the number of rtsummary info words needed to populate every block of + * a summary file that is large enough to track the given rt space. + */ +unsigned long long +xfs_rtsummary_wordcount( + struct xfs_mount *mp, + unsigned int rsumlevels, + xfs_extlen_t rbmblocks) +{ + xfs_filblks_t blocks; + + blocks = xfs_rtsummary_blockcount(mp, rsumlevels, rbmblocks); + return XFS_FSB_TO_B(mp, blocks) >> XFS_WORDLOG; +} diff --git a/libxfs/xfs_rtbitmap.h b/libxfs/xfs_rtbitmap.h index 02ee57f87d..62138df6d1 100644 --- a/libxfs/xfs_rtbitmap.h +++ b/libxfs/xfs_rtbitmap.h @@ -311,6 +311,11 @@ xfs_filblks_t xfs_rtbitmap_blockcount(struct xfs_mount *mp, xfs_rtbxlen_t rtextents); unsigned long long xfs_rtbitmap_wordcount(struct xfs_mount *mp, xfs_rtbxlen_t rtextents); + +xfs_filblks_t xfs_rtsummary_blockcount(struct xfs_mount *mp, + unsigned int rsumlevels, xfs_extlen_t rbmblocks); +unsigned long long xfs_rtsummary_wordcount(struct xfs_mount *mp, + unsigned int rsumlevels, xfs_extlen_t rbmblocks); #else /* CONFIG_XFS_RT */ # define xfs_rtfree_extent(t,b,l) (-ENOSYS) # define xfs_rtfree_blocks(t,rb,rl) (-ENOSYS) @@ -325,6 +330,8 @@ xfs_rtbitmap_blockcount(struct xfs_mount *mp, xfs_rtbxlen_t rtextents) return 0; } # define xfs_rtbitmap_wordcount(mp, r) (0) +# define xfs_rtsummary_blockcount(mp, l, b) (0) +# define xfs_rtsummary_wordcount(mp, l, b) (0) #endif /* CONFIG_XFS_RT */ #endif /* __XFS_RTBITMAP_H__ */ |