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authorDavid Howells <dhowells@redhat.com>2014-09-18 02:28:38 +0400
committerDavid Howells <dhowells@redhat.com>2014-09-18 02:29:53 +0400
commite2cf1f1cc7636bd860e47cd0ad6194da8975f8b5 (patch)
treebbd2b0e992ad9fcdc71c929808e1222b082cbe53
parent696382f938d22597f4945865ed8e3f25e240cd41 (diff)
downloadlinux-e2cf1f1cc7636bd860e47cd0ad6194da8975f8b5.tar.xz
CacheFiles: Handle rename2
Not all filesystems now provide the rename i_op - ext4 for one - but rather provide the rename2 i_op. CacheFiles checks that the filesystem has rename and so will reject ext4 now with EPERM: CacheFiles: Failed to register: -1 Fix this by checking for rename2 as an alternative. The call to vfs_rename() actually handles selection of the appropriate function, so we needn't worry about that. Turning on debugging shows: [cachef] ==> cachefiles_get_directory(,,cache) [cachef] subdir -> ffff88000b22b778 positive [cachef] <== cachefiles_get_directory() = -1 [check] where -1 is EPERM. Signed-off-by: David Howells <dhowells@redhat.com>
-rw-r--r--fs/cachefiles/namei.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 5bf2b41e66d3..83e9c94ca2cf 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -779,7 +779,8 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
!subdir->d_inode->i_op->lookup ||
!subdir->d_inode->i_op->mkdir ||
!subdir->d_inode->i_op->create ||
- !subdir->d_inode->i_op->rename ||
+ (!subdir->d_inode->i_op->rename &&
+ !subdir->d_inode->i_op->rename2) ||
!subdir->d_inode->i_op->rmdir ||
!subdir->d_inode->i_op->unlink)
goto check_error;