diff options
Diffstat (limited to 'fs/xfs/scrub/reap.c')
-rw-r--r-- | fs/xfs/scrub/reap.c | 73 |
1 files changed, 51 insertions, 22 deletions
diff --git a/fs/xfs/scrub/reap.c b/fs/xfs/scrub/reap.c index 265866891830..34f1e166498b 100644 --- a/fs/xfs/scrub/reap.c +++ b/fs/xfs/scrub/reap.c @@ -209,6 +209,48 @@ static inline void xreap_defer_finish_reset(struct xreap_state *rs) rs->force_roll = false; } +/* + * Compute the maximum length of a buffer cache scan (in units of sectors), + * given a quantity of fs blocks. + */ +xfs_daddr_t +xrep_bufscan_max_sectors( + struct xfs_mount *mp, + xfs_extlen_t fsblocks) +{ + int max_fsbs; + + /* Remote xattr values are the largest buffers that we support. */ + max_fsbs = xfs_attr3_rmt_blocks(mp, XFS_XATTR_SIZE_MAX); + + return XFS_FSB_TO_BB(mp, min_t(xfs_extlen_t, fsblocks, max_fsbs)); +} + +/* + * Return an incore buffer from a sector scan, or NULL if there are no buffers + * left to return. + */ +struct xfs_buf * +xrep_bufscan_advance( + struct xfs_mount *mp, + struct xrep_bufscan *scan) +{ + scan->__sector_count += scan->daddr_step; + while (scan->__sector_count <= scan->max_sectors) { + struct xfs_buf *bp = NULL; + int error; + + error = xfs_buf_incore(mp->m_ddev_targp, scan->daddr, + scan->__sector_count, XBF_BCACHE_SCAN, &bp); + if (!error) + return bp; + + scan->__sector_count += scan->daddr_step; + } + + return NULL; +} + /* Try to invalidate the incore buffers for an extent that we're freeing. */ STATIC void xreap_agextent_binval( @@ -239,28 +281,15 @@ xreap_agextent_binval( * of any plausible size. */ while (bno < agbno_next) { - xfs_agblock_t fsbcount; - xfs_agblock_t max_fsbs; - - /* - * Max buffer size is the max remote xattr buffer size, which - * is one fs block larger than 64k. - */ - max_fsbs = min_t(xfs_agblock_t, agbno_next - bno, - xfs_attr3_rmt_blocks(mp, XFS_XATTR_SIZE_MAX)); - - for (fsbcount = 1; fsbcount < max_fsbs; fsbcount++) { - struct xfs_buf *bp = NULL; - xfs_daddr_t daddr; - int error; - - daddr = XFS_AGB_TO_DADDR(mp, agno, bno); - error = xfs_buf_incore(mp->m_ddev_targp, daddr, - XFS_FSB_TO_BB(mp, fsbcount), - XBF_BCACHE_SCAN, &bp); - if (error) - continue; - + struct xrep_bufscan scan = { + .daddr = XFS_AGB_TO_DADDR(mp, agno, bno), + .max_sectors = xrep_bufscan_max_sectors(mp, + agbno_next - bno), + .daddr_step = XFS_FSB_TO_BB(mp, 1), + }; + struct xfs_buf *bp; + + while ((bp = xrep_bufscan_advance(mp, &scan)) != NULL) { xfs_trans_bjoin(sc->tp, bp); xfs_trans_binval(sc->tp, bp); rs->invalidated++; |