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ext4: use ext4_reserve_inode_write in ext4_xattr_set_handle
ext4_mark_iloc_dirty() says:
* The caller must have previously called ext4_reserve_inode_write().
* Give this, we know that the caller already has write access to iloc->bh.
ext4_xattr_set_handle, however, just open-codes it. May as well use
the helper function for consistency.
No bug here, just tidiness.
(Note: on cleanup path, ext4_reserve_inode_write sets
the bh to NULL if it returns an error, and brelse() of
a null bh is handled gracefully).
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>