Date: Sun, 11 Jul 2010 09:10:59 GMT From: Zheng Liu <lz@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 180752 for review Message-ID: <201007110910.o6B9Ax5j012203@repoman.freebsd.org>
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http://p4web.freebsd.org/@@180752?ac=10 Change 180752 by lz@gnehzuil-freebsd on 2010/07/11 09:10:55 Now ext2fs can read a small file. Affected files ... .. //depot/projects/soc2010/ext4fs/src/sys/fs/ext2fs/ext2_extents.c#4 edit .. //depot/projects/soc2010/ext4fs/src/sys/fs/ext2fs/ext2_inode_cnv.c#6 edit .. //depot/projects/soc2010/ext4fs/src/sys/fs/ext2fs/ext2_readwrite.c#5 edit .. //depot/projects/soc2010/ext4fs/src/sys/fs/ext2fs/ext2_vfsops.c#7 edit Differences ... ==== //depot/projects/soc2010/ext4fs/src/sys/fs/ext2fs/ext2_extents.c#4 (text+ko) ==== @@ -76,8 +76,9 @@ return; l = (struct ext4_extent *)(((char *)(ehp) + - sizeof(struct ext4_extent_header))); - r = l + ehp->eh_ecount - 1; + sizeof(struct ext4_extent_header))) + 1; + r = (struct ext4_extent *)(((char *)(ehp) + + sizeof(struct ext4_extent_header))) + ehp->eh_ecount - 1; while (l <= r) { m = l + (r - l) / 2; if (lbn < m->e_blk) ==== //depot/projects/soc2010/ext4fs/src/sys/fs/ext2fs/ext2_inode_cnv.c#6 (text+ko) ==== @@ -96,6 +96,7 @@ ip->i_mtime = ei->e2di_mtime; ip->i_ctime = ei->e2di_ctime; ip->i_flags = ei->e2di_flags; /* we need to entire flags to check new features */ + ip->i_gen = ei->e2di_gen; #if 0 ip->i_flags = 0; ip->i_flags |= (ei->e2di_flags & EXT2_APPEND) ? SF_APPEND : 0; ==== //depot/projects/soc2010/ext4fs/src/sys/fs/ext2fs/ext2_readwrite.c#5 (text+ko) ==== @@ -62,7 +62,6 @@ struct uio *uio; struct m_ext2fs *fs; struct buf *bp; - struct ext2mount *ump; struct ext4_extent nex, *ep; struct ext4_extent_header *ehp; /*struct ext4_extent_path *path = NULL;*/ @@ -80,8 +79,8 @@ ip = VTOI(vp); mode = ip->i_mode; uio = ap->a_uio; - ump = ip->i_ump; +printf("====\n"); orig_resid = uio->uio_resid; KASSERT(orig_resid >= 0, ("ext2_read: uio->uio_resid < 0")); if (orig_resid == 0) @@ -139,7 +138,7 @@ (ep->e_start_lo | ((daddr_t)(ep->e_start_hi) << 31) << 1); } - error = bread(ump->um_devvp, fsbtodb(fs, newblk), size, NOCRED, &bp); + error = bread(ip->i_devvp, fsbtodb(fs, newblk), size, NOCRED, &bp); if (error) { brelse(bp); bp = NULL; ==== //depot/projects/soc2010/ext4fs/src/sys/fs/ext2fs/ext2_vfsops.c#7 (text+ko) ==== @@ -864,8 +864,8 @@ struct vnode *vp; struct cdev *dev; struct thread *td; - int i, error; - int used_blocks; + int error; + /*int i, used_blocks;*/ td = curthread; error = vfs_hash_get(mp, ino, flags, td, vpp, NULL, NULL); @@ -949,11 +949,18 @@ * blocks are zeroed out - ext2_balloc depends on this * although for regular files and directories only */ + + /* + * NOTE: When ext4 file system use extents, we don't zero + * block pointers. + */ +#if 0 if(S_ISDIR(ip->i_mode) || S_ISREG(ip->i_mode)) { used_blocks = (ip->i_size+fs->e2fs_bsize-1) / fs->e2fs_bsize; for(i = used_blocks; i < EXT2_NDIR_BLOCKS; i++) ip->i_db[i] = 0; } +#endif ext2_print_inode(ip);
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