[PATCH v4 50/73] shmem: Comment fixups

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>

Remove the last mentions of radix tree from various comments.

Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
---
 mm/shmem.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index 01102e2e0ef3..090937922c1d 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -743,7 +743,7 @@ 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,
@@ -1118,10 +1118,10 @@ 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
@@ -1187,7 +1187,7 @@ int shmem_unuse(swp_entry_t swap, struct page *page)
 			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);
@@ -1862,7 +1862,7 @@ alloc_nohuge:		page = shmem_alloc_and_acct_page(gfp, inode,
 		spin_unlock_irq(&info->lock);
 		goto repeat;
 	}
-	if (error == -EEXIST)	/* from above or from radix_tree_insert */
+	if (error == -EEXIST)
 		goto repeat;
 	return error;
 }
@@ -2474,7 +2474,7 @@ 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)
@@ -2562,7 +2562,7 @@ static loff_t shmem_file_llseek(struct file *file, loff_t offset, int whence)
 }
 
 /*
- * We need a tag: a new tag would expand every radix_tree_node by 8 bytes,
+ * We need a tag: a new tag would expand every xa_node by 8 bytes,
  * so reuse a tag which we firmly believe is never set or cleared on shmem.
  */
 #define SHMEM_TAG_PINNED        PAGECACHE_TAG_TOWRITE
-- 
2.15.0

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]
  Powered by Linux