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xfs: hide reserved RT blocks from statfs

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File systems with a zoned RT device have a large number of reserved
blocks that are required for garbage collection, and which can't be
filled with user data.  Exclude them from the available blocks reported
through stat(v)fs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
This commit is contained in:
Christoph Hellwig 2024-12-16 08:14:42 +01:00
parent 859b692711
commit 55ef6e7a40
1 changed files with 2 additions and 1 deletions
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3
fs/xfs/xfs_super.c
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@ -869,7 +869,8 @@ xfs_statfs_rt(
{
st->f_bfree = xfs_rtbxlen_to_blen(mp,
xfs_sum_freecounter(mp, XC_FREE_RTEXTENTS));
st->f_blocks = mp->m_sb.sb_rblocks;
st->f_blocks = mp->m_sb.sb_rblocks - xfs_rtbxlen_to_blen(mp,
mp->m_free[XC_FREE_RTEXTENTS].res_total);
}
static void