We already has per-dquot sanity checks, but with per-inode checks
quota leakage investigation becomes much easier.
Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx>
---
fs/quota/dquot.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index e0b870f..4db57b7 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1428,6 +1428,8 @@ EXPORT_SYMBOL(inode_add_rsv_space);
void inode_claim_rsv_space(struct inode *inode, qsize_t number)
{
spin_lock(&inode->i_lock);
+ if (*inode_reserved_space(inode) < number)
+ WARN_ON_ONCE(1);
*inode_reserved_space(inode) -= number;
__inode_add_bytes(inode, number);
spin_unlock(&inode->i_lock);
@@ -1437,6 +1439,8 @@ EXPORT_SYMBOL(inode_claim_rsv_space);
void inode_sub_rsv_space(struct inode *inode, qsize_t number)
{
spin_lock(&inode->i_lock);
+ if (*inode_reserved_space(inode) < number)
+ WARN_ON_ONCE(1);
*inode_reserved_space(inode) -= number;
spin_unlock(&inode->i_lock);
}
--
1.6.6.1
--
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