udf: Remove BKL from udf_update_inode

udf_update_inode() does not need BKL since on-disk inode modifications are
protected by the buffer lock and reading of values of in-memory inode is
safe without any lock. In some cases we can write inconsistent inode state
to disk but in that case inode will be marked dirty and overwritten later.

Also make unnecessarily global udf_sync_inode() static.

Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index fc48f37aa2dd02dd4d10c281c77dee0f58fee98a..9656907f4b81caf555ad086b11a213fadd419f75 100644 (file)
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -51,6 +51,7 @@ MODULE_LICENSE("GPL");
 static mode_t udf_convert_permissions(struct fileEntry *);
 static int udf_update_inode(struct inode *, int);
 static void udf_fill_inode(struct inode *, struct buffer_head *);
+static int udf_sync_inode(struct inode *inode);
 static int udf_alloc_i_data(struct inode *inode, size_t size);
 static struct buffer_head *inode_getblk(struct inode *, sector_t, int *,
                                        sector_t *, int *);
@@ -79,9 +80,7 @@ void udf_evict_inode(struct inode *inode)
                want_delete = 1;
                inode->i_size = 0;
                udf_truncate(inode);
-               lock_kernel();
                udf_update_inode(inode, IS_SYNC(inode));
-               unlock_kernel();
        }
        invalidate_inode_buffers(inode);
        end_writeback(inode);
@@ -1373,16 +1372,10 @@ static mode_t udf_convert_permissions(struct fileEntry *fe)
 
 int udf_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
-       int ret;
-
-       lock_kernel();
-       ret = udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
-       unlock_kernel();
-
-       return ret;
+       return udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
 }
 
-int udf_sync_inode(struct inode *inode)
+static int udf_sync_inode(struct inode *inode)
 {
        return udf_update_inode(inode, 1);
 }

diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 74d58c08ebac5562922da86595fc1a253130234f..f25e57e8a777e446aa2e8d0549a4b63c54deaccb 100644 (file)
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -135,7 +135,6 @@ extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
 /* inode.c */
 extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
-extern int udf_sync_inode(struct inode *);
 extern void udf_expand_file_adinicb(struct inode *, int, int *);
 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
 extern struct buffer_head *udf_bread(struct inode *, int, int, int *);