Date: Thu, 27 Apr 2017 23:14:01 +0000 (UTC) From: "Pedro F. Giffuni" <pfg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r317532 - in stable/10/sys: fs/ext2fs modules/ext2fs Message-ID: <201704272314.v3RNE1Cf020938@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: pfg Date: Thu Apr 27 23:14:01 2017 New Revision: 317532 URL: https://svnweb.freebsd.org/changeset/base/317532 Log: Revert r314937 as anonymous unions in GCC don't seem to work. This has been breaking the powerpc(LINT64 at least) for quite a while now. Reported by: emaste Modified: stable/10/sys/fs/ext2fs/ext2_bmap.c stable/10/sys/fs/ext2fs/ext2_extents.c stable/10/sys/fs/ext2fs/ext2_extents.h stable/10/sys/fs/ext2fs/ext2_vnops.c stable/10/sys/modules/ext2fs/Makefile Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/fs/ext2fs/ext2_bmap.c ============================================================================== --- stable/10/sys/fs/ext2fs/ext2_bmap.c Thu Apr 27 22:53:38 2017 (r317531) +++ stable/10/sys/fs/ext2fs/ext2_bmap.c Thu Apr 27 23:14:01 2017 (r317532) @@ -102,6 +102,9 @@ ext4_bmapext(struct vnode *vp, int32_t b fs = ip->i_e2fs; lbn = bn; + /* + * TODO: need to implement read ahead to improve the performance. + */ if (runp != NULL) *runp = 0; @@ -109,25 +112,15 @@ ext4_bmapext(struct vnode *vp, int32_t b *runb = 0; ext4_ext_find_extent(fs, ip, lbn, &path); - if (path.ep_is_sparse) { - *bnp = -1; - if (runp != NULL) - *runp = path.ep_sparse_ext.e_len - - (lbn - path.ep_sparse_ext.e_blk) - 1; - } else { - ep = path.ep_ext; - if (ep == NULL) - ret = EIO; - else { - *bnp = fsbtodb(fs, lbn - ep->e_blk + - (ep->e_start_lo | (daddr_t)ep->e_start_hi << 32)); + ep = path.ep_ext; + if (ep == NULL) + ret = EIO; + else { + *bnp = fsbtodb(fs, lbn - ep->e_blk + + (ep->e_start_lo | (daddr_t)ep->e_start_hi << 32)); - if (*bnp == 0) - *bnp = -1; - - if (runp != NULL) - *runp = ep->e_len - (lbn - ep->e_blk) - 1; - } + if (*bnp == 0) + *bnp = -1; } if (path.ep_bp != NULL) { Modified: stable/10/sys/fs/ext2fs/ext2_extents.c ============================================================================== --- stable/10/sys/fs/ext2fs/ext2_extents.c Thu Apr 27 22:53:38 2017 (r317531) +++ stable/10/sys/fs/ext2fs/ext2_extents.c Thu Apr 27 23:14:01 2017 (r317532) @@ -66,14 +66,13 @@ static void ext4_ext_binsearch(struct inode *ip, struct ext4_extent_path *path, daddr_t lbn) { struct ext4_extent_header *ehp = path->ep_header; - struct ext4_extent *first, *l, *r, *m; + struct ext4_extent *l, *r, *m; if (ehp->eh_ecount == 0) return; - first = (struct ext4_extent *)(char *)(ehp + 1); - l = first; - r = first + ehp->eh_ecount - 1; + l = (struct ext4_extent *)(char *)(ehp + 1); + r = (struct ext4_extent *)(char *)(ehp + 1) + ehp->eh_ecount - 1; while (l <= r) { m = l + (r - l) / 2; if (lbn < m->e_blk) @@ -82,25 +81,7 @@ ext4_ext_binsearch(struct inode *ip, str l = m + 1; } - if (l == first) { - path->ep_sparse_ext.e_blk = lbn; - path->ep_sparse_ext.e_len = first->e_blk - lbn; - path->ep_sparse_ext.e_start_hi = 0; - path->ep_sparse_ext.e_start_lo = 0; - path->ep_is_sparse = 1; - return; - } path->ep_ext = l - 1; - if (path->ep_ext->e_blk + path->ep_ext->e_len <= lbn) { - path->ep_sparse_ext.e_blk = lbn; - if (l <= (first + ehp->eh_ecount - 1)) - path->ep_sparse_ext.e_len = l->e_blk - lbn; - else // XXX: where does it end? - path->ep_sparse_ext.e_len = 1; - path->ep_sparse_ext.e_start_hi = 0; - path->ep_sparse_ext.e_start_lo = 0; - path->ep_is_sparse = 1; - } } /* @@ -188,7 +169,6 @@ ext4_ext_find_extent(struct m_ext2fs *fs path->ep_depth = i; path->ep_ext = NULL; path->ep_index = NULL; - path->ep_is_sparse = 0; ext4_ext_binsearch(ip, path, lbn); return (path); Modified: stable/10/sys/fs/ext2fs/ext2_extents.h ============================================================================== --- stable/10/sys/fs/ext2fs/ext2_extents.h Thu Apr 27 22:53:38 2017 (r317531) +++ stable/10/sys/fs/ext2fs/ext2_extents.h Thu Apr 27 23:14:01 2017 (r317532) @@ -84,11 +84,7 @@ struct ext4_extent_cache { struct ext4_extent_path { uint16_t ep_depth; struct buf *ep_bp; - int ep_is_sparse; - union { - struct ext4_extent ep_sparse_ext; - struct ext4_extent *ep_ext; - }; + struct ext4_extent *ep_ext; struct ext4_extent_index *ep_index; struct ext4_extent_header *ep_header; }; Modified: stable/10/sys/fs/ext2fs/ext2_vnops.c ============================================================================== --- stable/10/sys/fs/ext2fs/ext2_vnops.c Thu Apr 27 22:53:38 2017 (r317531) +++ stable/10/sys/fs/ext2fs/ext2_vnops.c Thu Apr 27 23:14:01 2017 (r317532) @@ -1790,7 +1790,6 @@ ext2_ioctl(struct vop_ioctl_args *ap) static int ext4_ext_read(struct vop_read_args *ap) { - static unsigned char zeroes[EXT2_MAX_BLOCK_SIZE]; struct vnode *vp; struct inode *ip; struct uio *uio; @@ -1835,15 +1834,11 @@ ext4_ext_read(struct vop_read_args *ap) switch (cache_type) { case EXT4_EXT_CACHE_NO: ext4_ext_find_extent(fs, ip, lbn, &path); - if (path.ep_is_sparse) - ep = &path.ep_sparse_ext; - else - ep = path.ep_ext; + ep = path.ep_ext; if (ep == NULL) return (EIO); - ext4_ext_put_cache(ip, ep, - path.ep_is_sparse ? EXT4_EXT_CACHE_GAP : EXT4_EXT_CACHE_IN); + ext4_ext_put_cache(ip, ep, EXT4_EXT_CACHE_IN); newblk = lbn - ep->e_blk + (ep->e_start_lo | (daddr_t)ep->e_start_hi << 32); @@ -1856,7 +1851,7 @@ ext4_ext_read(struct vop_read_args *ap) case EXT4_EXT_CACHE_GAP: /* block has not been allocated yet */ - break; + return (0); case EXT4_EXT_CACHE_IN: newblk = lbn - nex.e_blk + (nex.e_start_lo | @@ -1867,34 +1862,24 @@ ext4_ext_read(struct vop_read_args *ap) panic("%s: invalid cache type", __func__); } - if (cache_type == EXT4_EXT_CACHE_GAP || - (cache_type == EXT4_EXT_CACHE_NO && path.ep_is_sparse)) { - if (xfersize > sizeof(zeroes)) - xfersize = sizeof(zeroes); - error = uiomove(zeroes, xfersize, uio); - if (error) - return (error); - } else { - error = bread(ip->i_devvp, fsbtodb(fs, newblk), size, - NOCRED, &bp); - if (error) { - brelse(bp); - return (error); - } + error = bread(ip->i_devvp, fsbtodb(fs, newblk), size, NOCRED, &bp); + if (error) { + brelse(bp); + return (error); + } - size -= bp->b_resid; - if (size < xfersize) { - if (size == 0) { - bqrelse(bp); - break; - } - xfersize = size; + size -= bp->b_resid; + if (size < xfersize) { + if (size == 0) { + bqrelse(bp); + break; } - error = uiomove(bp->b_data + blkoffset, xfersize, uio); - bqrelse(bp); - if (error) - return (error); + xfersize = size; } + error = uiomove(bp->b_data + blkoffset, (int)xfersize, uio); + bqrelse(bp); + if (error) + return (error); } return (0); Modified: stable/10/sys/modules/ext2fs/Makefile ============================================================================== --- stable/10/sys/modules/ext2fs/Makefile Thu Apr 27 22:53:38 2017 (r317531) +++ stable/10/sys/modules/ext2fs/Makefile Thu Apr 27 23:14:01 2017 (r317532) @@ -7,7 +7,4 @@ SRCS= opt_ddb.h opt_directio.h opt_quota ext2_htree.c ext2_inode.c ext2_inode_cnv.c ext2_lookup.c ext2_subr.c \ ext2_vfsops.c ext2_vnops.c -# Uses unamed union fields -CFLAGS+= ${GCC_MS_EXTENSIONS} - .include <bsd.kmod.mk>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201704272314.v3RNE1Cf020938>