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xfs: flush inode inactivation work when compiling usage statistics

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Users have come to expect that the space accounting information in
statfs and getquota reports are fairly accurate.  Now that we inactivate
inodes from a background queue, these numbers can be thrown off by
whatever resources are singly-owned by the inodes in the queue.  Flush
the pending inactivations when userspace asks for a space usage report.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2021-08-06 11:05:42 -07:00
parent 2eb665027b
commit 01e8f379a4
2 changed files with 11 additions and 0 deletions
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8
fs/xfs/xfs_qm_syscalls.c
View file

@ -481,6 +481,10 @@ xfs_qm_scall_getquota(
struct xfs_dquot *dqp;
int error;
/* Flush inodegc work at the start of a quota reporting scan. */
if (id == 0)
xfs_inodegc_flush(mp);
/*
* Try to get the dquot. We don't want it allocated on disk, so don't
* set doalloc. If it doesn't exist, we'll get ENOENT back.
@ -519,6 +523,10 @@ xfs_qm_scall_getquota_next(
struct xfs_dquot *dqp;
int error;
/* Flush inodegc work at the start of a quota reporting scan. */
if (*id == 0)
xfs_inodegc_flush(mp);
error = xfs_qm_dqget_next(mp, *id, type, &dqp);
if (error)
return error;

3
fs/xfs/xfs_super.c
View file

@ -785,6 +785,9 @@ xfs_fs_statfs(
xfs_extlen_t lsize;
int64_t ffree;
/* Wait for whatever inactivations are in progress. */
xfs_inodegc_flush(mp);
statp->f_type = XFS_SUPER_MAGIC;
statp->f_namelen = MAXNAMELEN - 1;