Re: [PATCH] JBD slab cleanups

Mingming Cao
2007-09-19T22:03:56Z

On Wed, 2007-09-19 at 13:48 -0600, Andreas Dilger wrote:
> On Sep 19, 2007 12:15 -0700, Mingming Cao wrote:
> > @@ -96,8 +96,7 @@ static int start_this_handle(journal_t *
> >
> > alloc_transaction:
> > if (!journal->j_running_transaction) {
> > - new_transaction = kmalloc(sizeof(*new_transaction),
> > - GFP_NOFS|__GFP_NOFAIL);
> > + new_transaction = kmalloc(sizeof(*new_transaction), GFP_NOFS);
>
> This should probably be a __GFP_NOFAIL if we are trying to start a new
> handle in truncate, as there is no way to propagate an error to the caller.
>

Thanks, updated version.

Here is the patch to clean up __GFP_NOFAIL flag in jbd/jbd2, most cases
they are not needed.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
---
fs/jbd/journal.c | 2 +-
fs/jbd2/journal.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6.23-rc6/fs/jbd/journal.c
===================================================================
--- linux-2.6.23-rc6.orig/fs/jbd/journal.c 2007-09-19 11:47:58.000000000 -0700
+++ linux-2.6.23-rc6/fs/jbd/journal.c 2007-09-19 14:23:45.000000000 -0700
@@ -653,7 +653,7 @@ static journal_t * journal_init_common (
journal_t *journal;
int err;

- journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+ journal = kmalloc(sizeof(*journal), GFP_KERNEL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));
Index: linux-2.6.23-rc6/fs/jbd2/journal.c
===================================================================
--- linux-2.6.23-rc6.orig/fs/jbd2/journal.c 2007-09-19 11:48:14.000000000 -0700
+++ linux-2.6.23-rc6/fs/jbd2/journal.c 2007-09-19 14:23:45.000000000 -0700
@@ -654,7 +654,7 @@ static journal_t * journal_init_common (
journal_t *journal;
int err;

- journal = kmalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+ journal = kmalloc(sizeof(*journal), GFP_KERNEL);
if (!journal)
goto fail;
memset(journal, 0, sizeof(*journal));