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authorJeff Mahoney <jeffm@jeffreymahoney.com>2009-06-18 01:26:29 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-18 22:03:46 +0200
commit1d965fe0eb435b3f9a10538815f6a68de0aef03c (patch)
tree67859aad430ba6e83be86ad227b704d31e0a818e /fs/reiserfs
parentufs: sector_t cannot be negative (diff)
downloadlinux-1d965fe0eb435b3f9a10538815f6a68de0aef03c.tar.xz
linux-1d965fe0eb435b3f9a10538815f6a68de0aef03c.zip
reiserfs: fix warnings with gcc 4.4
Several code paths in reiserfs have a construct like: if (is_direntry_le_ih(ih = B_N_PITEM_HEAD(src, item_num))) ... which, in addition to being ugly, end up causing compiler warnings with gcc 4.4.0. Previous compilers didn't issue a warning. fs/reiserfs/do_balan.c:1273: warning: operation on `aux_ih' may be undefined fs/reiserfs/lbalance.c:393: warning: operation on `ih' may be undefined fs/reiserfs/lbalance.c:421: warning: operation on `ih' may be undefined fs/reiserfs/lbalance.c:777: warning: operation on `ih' may be undefined I believe this is due to the ih being passed to macros which evaluate the argument more than once. This is old code and we haven't seen any problems with it, but this patch eliminates the warnings. It converts the multiple evaluation macros to static inlines and does a preassignment for the cases that were causing the warnings because that code is just ugly. Reported-by: Chris Mason <mason@oracle.com> Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/reiserfs')
-rw-r--r--fs/reiserfs/do_balan.c5
-rw-r--r--fs/reiserfs/lbalance.c10
2 files changed, 8 insertions, 7 deletions
diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c
index 4beb964a2a3e..128d3f7c8aa5 100644
--- a/fs/reiserfs/do_balan.c
+++ b/fs/reiserfs/do_balan.c
@@ -1270,9 +1270,8 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h
RFALSE(ih, "PAP-12210: ih must be 0");
- if (is_direntry_le_ih
- (aux_ih =
- B_N_PITEM_HEAD(tbS0, item_pos))) {
+ aux_ih = B_N_PITEM_HEAD(tbS0, item_pos);
+ if (is_direntry_le_ih(aux_ih)) {
/* we append to directory item */
int entry_count;
diff --git a/fs/reiserfs/lbalance.c b/fs/reiserfs/lbalance.c
index 381750a155f6..03d85cbf90bf 100644
--- a/fs/reiserfs/lbalance.c
+++ b/fs/reiserfs/lbalance.c
@@ -390,7 +390,8 @@ static void leaf_item_bottle(struct buffer_info *dest_bi,
if (last_first == FIRST_TO_LAST) {
/* if ( if item in position item_num in buffer SOURCE is directory item ) */
- if (is_direntry_le_ih(ih = B_N_PITEM_HEAD(src, item_num)))
+ ih = B_N_PITEM_HEAD(src, item_num);
+ if (is_direntry_le_ih(ih))
leaf_copy_dir_entries(dest_bi, src, FIRST_TO_LAST,
item_num, 0, cpy_bytes);
else {
@@ -418,7 +419,8 @@ static void leaf_item_bottle(struct buffer_info *dest_bi,
}
} else {
/* if ( if item in position item_num in buffer SOURCE is directory item ) */
- if (is_direntry_le_ih(ih = B_N_PITEM_HEAD(src, item_num)))
+ ih = B_N_PITEM_HEAD(src, item_num);
+ if (is_direntry_le_ih(ih))
leaf_copy_dir_entries(dest_bi, src, LAST_TO_FIRST,
item_num,
I_ENTRY_COUNT(ih) - cpy_bytes,
@@ -774,8 +776,8 @@ void leaf_delete_items(struct buffer_info *cur_bi, int last_first,
leaf_delete_items_entirely(cur_bi, first + 1,
del_num - 1);
- if (is_direntry_le_ih
- (ih = B_N_PITEM_HEAD(bh, B_NR_ITEMS(bh) - 1)))
+ ih = B_N_PITEM_HEAD(bh, B_NR_ITEMS(bh) - 1);
+ if (is_direntry_le_ih(ih))
/* the last item is directory */
/* len = numbers of directory entries in this item */
len = ih_entry_count(ih);