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authorDavid Howells <dhowells@redhat.com>2024-01-02 21:33:17 +0100
committerDavid Howells <dhowells@redhat.com>2024-01-03 15:53:01 +0100
commit9546ac78b232bac56ff975072b1965e0e755ebd4 (patch)
treef589f4a4f1eed75e88957e5556b3dfe56d3db379 /fs
parentcachefiles: Fix __cachefiles_prepare_write() (diff)
downloadlinux-9546ac78b232bac56ff975072b1965e0e755ebd4.tar.xz
linux-9546ac78b232bac56ff975072b1965e0e755ebd4.zip
9p: Fix initialisation of netfs_inode for 9p
The 9p filesystem is calling netfs_inode_init() in v9fs_init_inode() - before the struct inode fields have been initialised from the obtained file stats (ie. after v9fs_stat2inode*() has been called), but netfslib wants to set a couple of its fields from i_size. Reported-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Marc Dionne <marc.dionne@auristor.com> Tested-by: Dominique Martinet <asmadeus@codewreck.org> Acked-by: Dominique Martinet <asmadeus@codewreck.org> cc: Eric Van Hensbergen <ericvh@kernel.org> cc: Latchesar Ionkov <lucho@ionkov.net> cc: Dominique Martinet <asmadeus@codewreck.org> cc: Christian Schoenebeck <linux_oss@crudebyte.com> cc: v9fs@lists.linux.dev cc: linux-cachefs@redhat.com cc: linux-fsdevel@vger.kernel.org
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/v9fs_vfs.h1
-rw-r--r--fs/9p/vfs_inode.c6
-rw-r--r--fs/9p/vfs_inode_dotl.c1
3 files changed, 5 insertions, 3 deletions
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index 731e3d14b67d..0e8418066a48 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -42,6 +42,7 @@ struct inode *v9fs_alloc_inode(struct super_block *sb);
void v9fs_free_inode(struct inode *inode);
struct inode *v9fs_get_inode(struct super_block *sb, umode_t mode,
dev_t rdev);
+void v9fs_set_netfs_context(struct inode *inode);
int v9fs_init_inode(struct v9fs_session_info *v9ses,
struct inode *inode, umode_t mode, dev_t rdev);
void v9fs_evict_inode(struct inode *inode);
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index b66466e97459..32572982f72e 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -246,7 +246,7 @@ void v9fs_free_inode(struct inode *inode)
/*
* Set parameters for the netfs library
*/
-static void v9fs_set_netfs_context(struct inode *inode)
+void v9fs_set_netfs_context(struct inode *inode)
{
struct v9fs_inode *v9inode = V9FS_I(inode);
netfs_inode_init(&v9inode->netfs, &v9fs_req_ops, true);
@@ -326,8 +326,6 @@ int v9fs_init_inode(struct v9fs_session_info *v9ses,
err = -EINVAL;
goto error;
}
-
- v9fs_set_netfs_context(inode);
error:
return err;
@@ -359,6 +357,7 @@ struct inode *v9fs_get_inode(struct super_block *sb, umode_t mode, dev_t rdev)
iput(inode);
return ERR_PTR(err);
}
+ v9fs_set_netfs_context(inode);
return inode;
}
@@ -461,6 +460,7 @@ static struct inode *v9fs_qid_iget(struct super_block *sb,
goto error;
v9fs_stat2inode(st, inode, sb, 0);
+ v9fs_set_netfs_context(inode);
v9fs_cache_inode_get_cookie(inode);
unlock_new_inode(inode);
return inode;
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index e25fbc988f09..3505227e1704 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -128,6 +128,7 @@ static struct inode *v9fs_qid_iget_dotl(struct super_block *sb,
goto error;
v9fs_stat2inode_dotl(st, inode, 0);
+ v9fs_set_netfs_context(inode);
v9fs_cache_inode_get_cookie(inode);
retval = v9fs_get_acl(inode, fid);
if (retval)