shmem: Comment fixups

Remove the last mentions of radix tree from various comments.

Signed-off-by: Matthew Wilcox <willy@infradead.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/mm/shmem.c b/mm/shmem.c
index 5588205f4259..56bf122e0bb4 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -763,7 +763,7 @@ void shmem_unlock_mapping(struct address_space *mapping)
 }
 
 /*
- * Remove range of pages and swap entries from radix tree, and free them.
+ * Remove range of pages and swap entries from page cache, and free them.
  * If !unfalloc, truncate or punch hole; if unfalloc, undo failed fallocate.
  */
 static void shmem_undo_range(struct inode *inode, loff_t lstart, loff_t lend,
@@ -1143,10 +1143,10 @@ static int shmem_unuse_inode(struct shmem_inode_info *info,
                  * We needed to drop mutex to make that restrictive page
                  * allocation, but the inode might have been freed while we
                  * dropped it: although a racing shmem_evict_inode() cannot
-                 * complete without emptying the radix_tree, our page lock
+                 * complete without emptying the page cache, our page lock
                  * on this swapcache page is not enough to prevent that -
                  * free_swap_and_cache() of our swap entry will only
-                 * trylock_page(), removing swap from radix_tree whatever.
+                 * trylock_page(), removing swap from page cache whatever.
                  *
                  * We must not proceed to shmem_add_to_page_cache() if the
                  * inode has been freed, but of course we cannot rely on
@@ -1212,7 +1212,7 @@ int shmem_unuse(swp_entry_t swap, struct page *page)
                                             &memcg, false);
         if (error)
                 goto out;
-        /* No radix_tree_preload: swap entry keeps a place for page in tree */
+        /* No memory allocation: swap entry occupies the slot for the page */
         error = -EAGAIN;
 
         mutex_lock(&shmem_swaplist_mutex);
@@ -1887,7 +1887,7 @@ unlock:
                 spin_unlock_irq(&info->lock);
                 goto repeat;
         }
-        if (error == -EEXIST)   /* from above or from radix_tree_insert */
+        if (error == -EEXIST)
                 goto repeat;
         return error;
 }
@@ -2501,7 +2501,7 @@ static ssize_t shmem_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
 }
 
 /*
- * llseek SEEK_DATA or SEEK_HOLE through the radix_tree.
+ * llseek SEEK_DATA or SEEK_HOLE through the page cache.
  */
 static pgoff_t shmem_seek_hole_data(struct address_space *mapping,
                                     pgoff_t index, pgoff_t end, int whence)