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authorDmitry Monakhov <dmonakhov@sw.ru>2007-07-18 09:09:15 -0400
committerTheodore Ts'o <tytso@mit.edu>2007-07-18 09:09:15 -0400
commite9f410b1c035b6e63f0b4c3d6cfe4298d6a04492 (patch)
tree8c7cb3c756102e201025086205bd148a5bcc6904 /fs/ext4
parent26d535ed24f74ce949d7b49e40574c45cd845cdd (diff)
ext4: extent macros cleanup
Use the EXT_LAST_INDEX macro; that's what it's there for. Clean up ext4_ext_ext_grow_indepth() so the correct EXT_FIRST_INDEX or EXT_FIRST_MACRO is used as necessary. The two macros are equivalent, so the C will collapse the if statement out, but it makes the code much more readable. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Acked-by: Alex Tomas <alex@clusterfs.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Singed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/extents.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 11ce15d91acc..750c46f7d893 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -376,7 +376,7 @@ ext4_ext_binsearch_idx(struct inode *inode, struct ext4_ext_path *path, int bloc
ext_debug("binsearch for %d(idx): ", block);
l = EXT_FIRST_INDEX(eh) + 1;
- r = EXT_FIRST_INDEX(eh) + le16_to_cpu(eh->eh_entries) - 1;
+ r = EXT_LAST_INDEX(eh);
while (l <= r) {
m = l + (r - l) / 2;
if (block < le32_to_cpu(m->ei_block))
@@ -441,7 +441,7 @@ ext4_ext_binsearch(struct inode *inode, struct ext4_ext_path *path, int block)
ext_debug("binsearch for %d: ", block);
l = EXT_FIRST_EXTENT(eh) + 1;
- r = EXT_FIRST_EXTENT(eh) + le16_to_cpu(eh->eh_entries) - 1;
+ r = EXT_LAST_EXTENT(eh);
while (l <= r) {
m = l + (r - l) / 2;
@@ -924,8 +924,13 @@ static int ext4_ext_grow_indepth(handle_t *handle, struct inode *inode,
curp->p_hdr->eh_max = cpu_to_le16(ext4_ext_space_root_idx(inode));
curp->p_hdr->eh_entries = cpu_to_le16(1);
curp->p_idx = EXT_FIRST_INDEX(curp->p_hdr);
- /* FIXME: it works, but actually path[0] can be index */
- curp->p_idx->ei_block = EXT_FIRST_EXTENT(path[0].p_hdr)->ee_block;
+
+ if (path[0].p_hdr->eh_depth)
+ curp->p_idx->ei_block =
+ EXT_FIRST_INDEX(path[0].p_hdr)->ei_block;
+ else
+ curp->p_idx->ei_block =
+ EXT_FIRST_EXTENT(path[0].p_hdr)->ee_block;
ext4_idx_store_pblock(curp->p_idx, newblock);
neh = ext_inode_hdr(inode);