From: Darrick J. Wong <darrick.wong@xxxxxxxxxx> Adapt _reflink_find_shared to take an optional transaction pointer. The inode scrubber code will need to decide (within transaction context) if a file has shared blocks. To avoid buffer deadlocks, we must pass the tp through to this function's utility calls. Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --- fs/xfs/xfs_bmap_util.c | 4 ++-- fs/xfs/xfs_reflink.c | 15 ++++++++------- fs/xfs/xfs_reflink.h | 6 +++--- 3 files changed, 13 insertions(+), 12 deletions(-) diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 308428d..fe83bbc 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -455,8 +455,8 @@ xfs_getbmap_adjust_shared( agno = XFS_FSB_TO_AGNO(mp, map->br_startblock); agbno = XFS_FSB_TO_AGBNO(mp, map->br_startblock); - error = xfs_reflink_find_shared(mp, agno, agbno, map->br_blockcount, - &ebno, &elen, true); + error = xfs_reflink_find_shared(mp, NULL, agno, agbno, + map->br_blockcount, &ebno, &elen, true); if (error) return error; diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index ffe6fe7..e25c995 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -155,6 +155,7 @@ int xfs_reflink_find_shared( struct xfs_mount *mp, + struct xfs_trans *tp, xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t aglen, @@ -166,18 +167,18 @@ xfs_reflink_find_shared( struct xfs_btree_cur *cur; int error; - error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp); + error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp); if (error) return error; - cur = xfs_refcountbt_init_cursor(mp, NULL, agbp, agno, NULL); + cur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno, NULL); error = xfs_refcount_find_shared(cur, agbno, aglen, fbno, flen, find_end_of_shared); xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); - xfs_buf_relse(agbp); + xfs_trans_brelse(tp, agbp); return error; } @@ -217,7 +218,7 @@ xfs_reflink_trim_around_shared( agbno = XFS_FSB_TO_AGBNO(ip->i_mount, irec->br_startblock); aglen = irec->br_blockcount; - error = xfs_reflink_find_shared(ip->i_mount, agno, agbno, + error = xfs_reflink_find_shared(ip->i_mount, NULL, agno, agbno, aglen, &fbno, &flen, true); if (error) return error; @@ -1373,8 +1374,8 @@ xfs_reflink_dirty_extents( agbno = XFS_FSB_TO_AGBNO(mp, map[1].br_startblock); aglen = map[1].br_blockcount; - error = xfs_reflink_find_shared(mp, agno, agbno, aglen, - &rbno, &rlen, true); + error = xfs_reflink_find_shared(mp, NULL, agno, agbno, + aglen, &rbno, &rlen, true); if (error) goto out; if (rbno == NULLAGBLOCK) @@ -1445,7 +1446,7 @@ xfs_reflink_clear_inode_flag( agbno = XFS_FSB_TO_AGBNO(mp, map.br_startblock); aglen = map.br_blockcount; - error = xfs_reflink_find_shared(mp, agno, agbno, aglen, + error = xfs_reflink_find_shared(mp, *tpp, agno, agbno, aglen, &rbno, &rlen, false); if (error) return error; diff --git a/fs/xfs/xfs_reflink.h b/fs/xfs/xfs_reflink.h index d29a796..b8cc5c3 100644 --- a/fs/xfs/xfs_reflink.h +++ b/fs/xfs/xfs_reflink.h @@ -20,9 +20,9 @@ #ifndef __XFS_REFLINK_H #define __XFS_REFLINK_H 1 -extern int xfs_reflink_find_shared(struct xfs_mount *mp, xfs_agnumber_t agno, - xfs_agblock_t agbno, xfs_extlen_t aglen, xfs_agblock_t *fbno, - xfs_extlen_t *flen, bool find_maximal); +extern int xfs_reflink_find_shared(struct xfs_mount *mp, struct xfs_trans *tp, + xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t aglen, + xfs_agblock_t *fbno, xfs_extlen_t *flen, bool find_maximal); extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip, struct xfs_bmbt_irec *irec, bool *shared, bool *trimmed); -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
