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Commit 035cfc61 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes 

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  [GFS2] fix gfs2 block allocation (cleaned up)
  [GFS2] BUG: unable to handle kernel paging request at ffff81002690e000
parents 919c0d14 5af4e7a0

fs/gfs2/bmap.c

+9 −14
Original line number Diff line number Diff line
@@ -246,15 +246,11 @@ static void find_metapath(const struct gfs2_sbd *sdp, u64 block, 


}



static inline unsigned int zero_metapath_length(const struct metapath *mp,

						unsigned height)

static inline unsigned int metapath_branch_start(const struct metapath *mp)

{

	unsigned int i;

	for (i = 0; i < height - 1; i++) {

		if (mp->mp_list[i] != 0)

			return i;

	}

	return height;

	if (mp->mp_list[0] == 0)

		return 2;

	return 1;

}



/**
@@ -436,7 +432,7 @@ static int gfs2_bmap_alloc(struct inode *inode, const sector_t lblock, 
	struct gfs2_sbd *sdp = GFS2_SB(inode);

	struct buffer_head *dibh = mp->mp_bh[0];

	u64 bn, dblock = 0;

	unsigned n, i, blks, alloced = 0, iblks = 0, zmpl = 0;

	unsigned n, i, blks, alloced = 0, iblks = 0, branch_start = 0;

	unsigned dblks = 0;

	unsigned ptrs_per_blk;

	const unsigned end_of_metadata = height - 1;
@@ -471,9 +467,8 @@ static int gfs2_bmap_alloc(struct inode *inode, const sector_t lblock, 
			/* Building up tree height */

			state = ALLOC_GROW_HEIGHT;

			iblks = height - ip->i_height;

			zmpl = zero_metapath_length(mp, height);

			iblks -= zmpl;

			iblks += height;

			branch_start = metapath_branch_start(mp);

			iblks += (height - branch_start);

		}

	}
@@ -509,13 +504,13 @@ static int gfs2_bmap_alloc(struct inode *inode, const sector_t lblock, 
					sizeof(struct gfs2_meta_header));

				*ptr = zero_bn;

				state = ALLOC_GROW_DEPTH;

				for(i = zmpl; i < height; i++) {

				for(i = branch_start; i < height; i++) {

					if (mp->mp_bh[i] == NULL)

						break;

					brelse(mp->mp_bh[i]);

					mp->mp_bh[i] = NULL;

				}

				i = zmpl;

				i = branch_start;

			}

			if (n == 0)

				break;

fs/gfs2/rgrp.c

+1 −1
Original line number Diff line number Diff line
@@ -195,7 +195,7 @@ ulong_aligned: 
	   depending on architecture.  I've experimented with several ways

	   of writing this section such as using an else before the goto

	   but this one seems to be the fastest. */

	while ((unsigned char *)plong < end - 1) {

	while ((unsigned char *)plong < end - sizeof(unsigned long)) {

		prefetch(plong + 1);

		if (((*plong) & LBITMASK) != lskipval)

			break;