6.12-stable review patch. If anyone has any objections, please let me know.
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From: Darrick J. Wong djwong@kernel.org
commit ca378189fdfa890a4f0622f85ee41b710bbac271 upstream
Now that we've converted the dquot logging machinery to attach the dquot buffer to the li_buf pointer so that the AIL dqflush doesn't have to allocate or read buffers in a reclaim path, do the same for the quotacheck code so that the reclaim shrinker dqflush call doesn't have to do that either.
Cc: stable@vger.kernel.org # v6.12 Fixes: 903edea6c53f09 ("mm: warn about illegal __GFP_NOFAIL usage in a more appropriate location and manner") Signed-off-by: "Darrick J. Wong" djwong@kernel.org Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/xfs/xfs_dquot.c | 9 +++------ fs/xfs/xfs_dquot.h | 2 -- fs/xfs/xfs_qm.c | 18 +++++++++++++----- 3 files changed, 16 insertions(+), 13 deletions(-)
--- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -1278,11 +1278,10 @@ xfs_qm_dqflush_check( * Requires dquot flush lock, will clear the dirty flag, delete the quota log * item from the AIL, and shut down the system if something goes wrong. */ -int +static int xfs_dquot_read_buf( struct xfs_trans *tp, struct xfs_dquot *dqp, - xfs_buf_flags_t xbf_flags, struct xfs_buf **bpp) { struct xfs_mount *mp = dqp->q_mount; @@ -1290,10 +1289,8 @@ xfs_dquot_read_buf( int error;
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, xbf_flags, + mp->m_quotainfo->qi_dqchunklen, 0, &bp, &xfs_dquot_buf_ops); - if (error == -EAGAIN) - return error; if (xfs_metadata_is_sick(error)) xfs_dquot_mark_sick(dqp); if (error) @@ -1327,7 +1324,7 @@ xfs_dquot_attach_buf( struct xfs_buf *bp = NULL;
spin_unlock(&qlip->qli_lock); - error = xfs_dquot_read_buf(tp, dqp, 0, &bp); + error = xfs_dquot_read_buf(tp, dqp, &bp); if (error) return error;
--- a/fs/xfs/xfs_dquot.h +++ b/fs/xfs/xfs_dquot.h @@ -204,8 +204,6 @@ void xfs_dquot_to_disk(struct xfs_disk_d #define XFS_DQ_IS_DIRTY(dqp) ((dqp)->q_flags & XFS_DQFLAG_DIRTY)
void xfs_qm_dqdestroy(struct xfs_dquot *dqp); -int xfs_dquot_read_buf(struct xfs_trans *tp, struct xfs_dquot *dqp, - xfs_buf_flags_t flags, struct xfs_buf **bpp); int xfs_qm_dqflush(struct xfs_dquot *dqp, struct xfs_buf *bp); void xfs_qm_dqunpin_wait(struct xfs_dquot *dqp); void xfs_qm_adjust_dqtimers(struct xfs_dquot *d); --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -146,13 +146,13 @@ xfs_qm_dqpurge( * We don't care about getting disk errors here. We need * to purge this dquot anyway, so we go ahead regardless. */ - error = xfs_dquot_read_buf(NULL, dqp, XBF_TRYLOCK, &bp); + error = xfs_dquot_use_attached_buf(dqp, &bp); if (error == -EAGAIN) { xfs_dqfunlock(dqp); dqp->q_flags &= ~XFS_DQFLAG_FREEING; goto out_unlock; } - if (error) + if (!bp) goto out_funlock;
/* @@ -474,8 +474,8 @@ xfs_qm_dquot_isolate( /* we have to drop the LRU lock to flush the dquot */ spin_unlock(lru_lock);
- error = xfs_dquot_read_buf(NULL, dqp, XBF_TRYLOCK, &bp); - if (error) { + error = xfs_dquot_use_attached_buf(dqp, &bp); + if (!bp || error == -EAGAIN) { xfs_dqfunlock(dqp); goto out_unlock_dirty; } @@ -1132,6 +1132,10 @@ xfs_qm_quotacheck_dqadjust( return error; }
+ error = xfs_dquot_attach_buf(NULL, dqp); + if (error) + return error; + trace_xfs_dqadjust(dqp);
/* @@ -1311,9 +1315,13 @@ xfs_qm_flush_one( goto out_unlock; }
- error = xfs_dquot_read_buf(NULL, dqp, XBF_TRYLOCK, &bp); + error = xfs_dquot_use_attached_buf(dqp, &bp); if (error) goto out_unlock; + if (!bp) { + error = -EFSCORRUPTED; + goto out_unlock; + }
error = xfs_qm_dqflush(dqp, bp); if (!error)