From: "Darrick J. Wong" djwong@kernel.org
mainline-inclusion from mainline-v5.11-rc4 commit 9a537de3b009d95cfb048b7cbfe9bdb0f655596e category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4KIAO CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Buffered writers who have run out of quota reservation call xfs_inode_free_quota_blocks to try to free any space reservations that might reduce the quota usage. Unfortunately, the buffered write path treats "out of project quota" the same as "out of overall space" so this function has never supported scanning for space that might ease an "out of project quota" condition.
We're about to start using this function for cases where we actually /can/ tell if we're out of project quota, so add in this functionality.
Signed-off-by: Darrick J. Wong djwong@kernel.org Reviewed-by: Christoph Hellwig hch@lst.de Reviewed-by: Brian Foster bfoster@redhat.com Signed-off-by: Lihong Kou koulihong@huawei.com Reviewed-by: Zhang Yi yi.zhang@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- fs/xfs/xfs_icache.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 7427cf62d96b..9496985e2f09 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -1434,6 +1434,15 @@ xfs_inode_free_quota_blocks( } }
+ if (XFS_IS_PQUOTA_ENFORCED(ip->i_mount)) { + dq = xfs_inode_dquot(ip, XFS_DQTYPE_PROJ); + if (dq && xfs_dquot_lowsp(dq)) { + eofb.eof_prid = ip->i_d.di_projid; + eofb.eof_flags |= XFS_EOF_FLAGS_PRID; + do_work = true; + } + } + if (!do_work) return false;