xfs: report iomap_bn in block base
Report the iomap_bn field of struct xfs_iomap in terms of filesystem
blocks instead of in terms of bytes. Shift the byte conversions
into the caller, and replace the IOMAP_DELAY and IOMAP_HOLE flag
checks with checks for HOLESTARTBLOCK and DELAYSTARTBLOCK.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 303a779..2b09cc3 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -568,10 +568,12 @@
sector_t bn;
struct xfs_mount *m = XFS_I(inode)->i_mount;
xfs_off_t iomap_offset = XFS_FSB_TO_B(m, mp->iomap_offset);
+ xfs_daddr_t iomap_bn = xfs_fsb_to_db(XFS_I(inode), mp->iomap_bn);
- ASSERT(mp->iomap_bn != IOMAP_DADDR_NULL);
+ ASSERT(mp->iomap_bn != HOLESTARTBLOCK);
+ ASSERT(mp->iomap_bn != DELAYSTARTBLOCK);
- bn = (mp->iomap_bn >> (inode->i_blkbits - BBSHIFT)) +
+ bn = (iomap_bn >> (inode->i_blkbits - BBSHIFT)) +
((offset - iomap_offset) >> inode->i_blkbits);
ASSERT(bn || XFS_IS_REALTIME_INODE(XFS_I(inode)));
@@ -587,8 +589,8 @@
xfs_iomap_t *iomapp,
xfs_off_t offset)
{
- ASSERT(!(iomapp->iomap_flags & IOMAP_HOLE));
- ASSERT(!(iomapp->iomap_flags & IOMAP_DELAY));
+ ASSERT(iomapp->iomap_bn != HOLESTARTBLOCK);
+ ASSERT(iomapp->iomap_bn != DELAYSTARTBLOCK);
lock_buffer(bh);
xfs_map_buffer(inode, bh, iomapp, offset);
@@ -818,8 +820,8 @@
continue;
}
- ASSERT(!(mp->iomap_flags & IOMAP_HOLE));
- ASSERT(!(mp->iomap_flags & IOMAP_DELAY));
+ ASSERT(mp->iomap_bn != HOLESTARTBLOCK);
+ ASSERT(mp->iomap_bn != DELAYSTARTBLOCK);
xfs_map_at_offset(inode, bh, mp, offset);
if (startio) {
@@ -1478,7 +1480,8 @@
if (niomap == 0)
return 0;
- if (iomap.iomap_bn != IOMAP_DADDR_NULL) {
+ if (iomap.iomap_bn != HOLESTARTBLOCK &&
+ iomap.iomap_bn != DELAYSTARTBLOCK) {
/*
* For unwritten extents do not report a disk address on
* the read case (treat as if we're reading into a hole).
@@ -1513,7 +1516,7 @@
(iomap.iomap_flags & (IOMAP_NEW|IOMAP_UNWRITTEN))))
set_buffer_new(bh_result);
- if (iomap.iomap_flags & IOMAP_DELAY) {
+ if (iomap.iomap_bn == DELAYSTARTBLOCK) {
BUG_ON(direct);
if (create) {
set_buffer_uptodate(bh_result);