Date: Fri, 4 Dec 2015 03:38:35 +0000 (UTC) From: "Kenneth D. Merry" <ken@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r291741 - head/sys/geom Message-ID: <201512040338.tB43cZY1053263@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: ken Date: Fri Dec 4 03:38:35 2015 New Revision: 291741 URL: https://svnweb.freebsd.org/changeset/base/291741 Log: Fix g_disk_vlist_limit() to work properly with deletes. Add a new bp argument to g_disk_maxsegs(), and add a new function, g_disk_maxsize() tha will properly determine the maximum I/O size for a delete or non-delete bio. Submitted by: will MFC after: 1 week Sponsored by: Spectra Logic Modified: head/sys/geom/geom_disk.c Modified: head/sys/geom/geom_disk.c ============================================================================== --- head/sys/geom/geom_disk.c Fri Dec 4 03:18:02 2015 (r291740) +++ head/sys/geom/geom_disk.c Fri Dec 4 03:38:35 2015 (r291741) @@ -253,10 +253,18 @@ g_disk_ioctl(struct g_provider *pp, u_lo return (error); } +static off_t +g_disk_maxsize(struct disk *dp, struct bio *bp) +{ + if (bp->bio_cmd == BIO_DELETE) + return (dp->d_delmaxsize); + return (dp->d_maxsize); +} + static int -g_disk_maxsegs(struct disk *dp) +g_disk_maxsegs(struct disk *dp, struct bio *bp) { - return ((dp->d_maxsize / PAGE_SIZE) + 1); + return ((g_disk_maxsize(dp, bp) / PAGE_SIZE) + 1); } static void @@ -334,7 +342,7 @@ g_disk_vlist_limit(struct disk *dp, stru end = (bus_dma_segment_t *)bp->bio_data + bp->bio_ma_n; residual = bp->bio_length; offset = bp->bio_ma_offset; - pages = g_disk_maxsegs(dp); + pages = g_disk_maxsegs(dp, bp); while (residual != 0 && pages != 0) { KASSERT((seg != end), ("vlist limit runs off the end")); @@ -350,10 +358,7 @@ static bool g_disk_limit(struct disk *dp, struct bio *bp) { bool limited = false; - off_t d_maxsize; - - d_maxsize = (bp->bio_cmd == BIO_DELETE) ? - dp->d_delmaxsize : dp->d_maxsize; + off_t maxsz = g_disk_maxsize(dp, bp); /* * XXX: If we have a stripesize we should really use it here. @@ -361,8 +366,8 @@ g_disk_limit(struct disk *dp, struct bio * as deletes can be very sensitive to size given how they * are processed. */ - if (bp->bio_length > d_maxsize) { - bp->bio_length = d_maxsize; + if (bp->bio_length > maxsz) { + bp->bio_length = maxsz; limited = true; }
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201512040338.tB43cZY1053263>