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author | Julia Lawall <julia@diku.dk> | 2009-02-12 10:16:03 -0500 |
---|---|---|
committer | Chris Mason <chris.mason@oracle.com> | 2009-02-12 10:16:03 -0500 |
commit | 3f3420df505e47751ef76a652b5cb660e5360d6f (patch) | |
tree | de413daa777dba47be638c29825c779635a45764 /Documentation | |
parent | a48ddf08ba9bab91efd95e458737afa9d7699623 (diff) |
Btrfs: fs/btrfs/volumes.c: remove useless kzalloc
The call to kzalloc is followed by a kmalloc whose result is stored in the
same variable.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,l;
position p1,p2;
expression *ptr != NULL;
@@
(
if ((x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...)) == NULL) S
|
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
)
<... when != x
when != if (...) { <+...x...+> }
x->f = E
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions