Commit df3ab170 authored by Tao Ma's avatar Tao Ma Committed by Theodore Ts'o
Browse files

ext4: fix the comment describing ext4_ext_search_right() 



The comment describing what ext4_ext_search_right() does is incorrect.
We return 0 in *phys when *logical is the 'largest' allocated block,
not smallest.  

Fix a few other typos while we're at it.

Cc: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: default avatarTao Ma <boyu.mt@taobao.com>
parent 4113c4ca

fs/ext4/extents.c

+2 −2
Original line number Diff line number Diff line
@@ -1263,7 +1263,7 @@ static int ext4_ext_search_left(struct inode *inode, 
/*

 * search the closest allocated block to the right for *logical

 * and returns it at @logical + it's physical address at @phys

 * if *logical is the smallest allocated block, the function

 * if *logical is the largest allocated block, the function

 * returns 0 at @phys

 * return value contains 0 (success) or error code

 */
@@ -2168,7 +2168,7 @@ int ext4_ext_calc_credits_for_single_extent(struct inode *inode, int nrblocks, 
			 *  need to account for leaf block credit

			 *

			 *  bitmaps and block group descriptor blocks

			 *  and other metadat blocks still need to be

			 *  and other metadata blocks still need to be

			 *  accounted.

			 */

			/* 1 bitmap, 1 block group descriptor */

fs/ext4/inode.c

+2 −2
Original line number Diff line number Diff line
@@ -458,7 +458,7 @@ static void set_buffers_da_mapped(struct inode *inode, 
 * the buffer head is mapped.

 *

 * It returns 0 if plain look up failed (blocks have not been allocated), in

 * that casem, buffer head is unmapped

 * that case, buffer head is unmapped

 *

 * It returns the error in case of allocation failure.

 */
@@ -497,7 +497,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, 
	 * Returns if the blocks have already allocated

	 *

	 * Note that if blocks have been preallocated

	 * ext4_ext_get_block() returns th create = 0

	 * ext4_ext_get_block() returns the create = 0

	 * with buffer head unmapped.

	 */

	if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED)

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