ext3: fix wrong gfp type under transaction

There are several places where we make allocations with GFP_KERNEL while under
a transaction, which could lead to an assertion panic or lockup if under
memory pressure.  This patch switches these problem areas to use GFP_NOFS to
keep these problems from happening.

Signed-off-by: Josef Bacik <jbacik@redhat.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c
index d34e9967430a..a754d1848173 100644
--- a/fs/ext3/acl.c
+++ b/fs/ext3/acl.c
@@ -37,7 +37,7 @@ ext3_acl_from_disk(const void *value, size_t size)
                 return ERR_PTR(-EINVAL);
         if (count == 0)
                 return NULL;
-        acl = posix_acl_alloc(count, GFP_KERNEL);
+        acl = posix_acl_alloc(count, GFP_NOFS);
         if (!acl)
                 return ERR_PTR(-ENOMEM);
         for (n=0; n < count; n++) {
@@ -91,7 +91,7 @@ ext3_acl_to_disk(const struct posix_acl *acl, size_t *size)
 
         *size = ext3_acl_size(acl->a_count);
         ext_acl = kmalloc(sizeof(ext3_acl_header) + acl->a_count *
-                        sizeof(ext3_acl_entry), GFP_KERNEL);
+                        sizeof(ext3_acl_entry), GFP_NOFS);
         if (!ext_acl)
                 return ERR_PTR(-ENOMEM);
         ext_acl->a_version = cpu_to_le32(EXT3_ACL_VERSION);
@@ -187,7 +187,7 @@ ext3_get_acl(struct inode *inode, int type)
         }
         retval = ext3_xattr_get(inode, name_index, "", NULL, 0);
         if (retval > 0) {
-                value = kmalloc(retval, GFP_KERNEL);
+                value = kmalloc(retval, GFP_NOFS);
                 if (!value)
                         return ERR_PTR(-ENOMEM);
                 retval = ext3_xattr_get(inode, name_index, "", value, retval);
@@ -335,7 +335,7 @@ ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
                         if (error)
                                 goto cleanup;
                 }
-                clone = posix_acl_clone(acl, GFP_KERNEL);
+                clone = posix_acl_clone(acl, GFP_NOFS);
                 error = -ENOMEM;
                 if (!clone)
                         goto cleanup;