Commit 4e317ce7 authored by Al Viro's avatar Al Viro
Browse files

ufs_inode_get{frag,block}(): get rid of 'phys' argument 



Just pass NULL as locked_page in case of first block in the indirect
chain.  Old calling conventions aside, a reason for having 'phys'
was that ufs_inode_getfrag() used to be able to do _two_ allocations
- indirect block and extending/reallocating a tail.  We needed
locked_page for the latter (it's a data), but we also needed to
figure out that indirect block is metadata.  So we used to pass
non-NULL locked_page in all cases *and* used NULL phys as
indication of being asked to allocate an indirect.

With tail unpacking taken into a separate function we don't need
those convolutions anymore.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 0385f1f9

fs/ufs/inode.c

+8 −15
Original line number Diff line number Diff line
@@ -245,15 +245,13 @@ ufs_extend_tail(struct inode *inode, u64 writes_to, 
 * @index: number of block pointer within the inode's array.

 * @new_fragment: number of new allocated fragment(s)

 * @err: we set it if something wrong

 * @phys: pointer to where we save physical number of new allocated fragments,

 *   NULL if we allocate not data(indirect blocks for example).

 * @new: we set it if we allocate new block

 * @locked_page: for ufs_new_fragments()

 */

static u64

ufs_inode_getfrag(struct inode *inode, unsigned index,

		  sector_t new_fragment, int *err,

		  long *phys, int *new, struct page *locked_page)

		  int *new, struct page *locked_page)

{

	struct ufs_inode_info *ufsi = UFS_I(inode);

	struct super_block *sb = inode->i_sb;
@@ -286,18 +284,15 @@ ufs_inode_getfrag(struct inode *inode, unsigned index, 
			goal += uspi->s_fpb;

	}

	tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment),

				goal, uspi->s_fpb, err,

				phys != NULL ? locked_page : NULL);

				goal, uspi->s_fpb, err, locked_page);



	if (!tmp) {

		*err = -ENOSPC;

		return 0;

	}



	if (phys) {

		*err = 0;

	if (new)

		*new = 1;

	}

	inode->i_ctime = CURRENT_TIME_SEC;

	if (IS_SYNC(inode))

		ufs_sync_inode (inode);
@@ -329,14 +324,13 @@ repeat2: 
 * @new_fragment: number of new allocated fragment

 *  (block will hold this fragment and also uspi->s_fpb-1)

 * @err: see ufs_inode_getfrag()

 * @phys: see ufs_inode_getfrag()

 * @new: see ufs_inode_getfrag()

 * @locked_page: see ufs_inode_getfrag()

 */

static u64

ufs_inode_getblock(struct inode *inode, u64 ind_block,

		  unsigned index, sector_t new_fragment, int *err,

		  long *phys, int *new, struct page *locked_page)

		  int *new, struct page *locked_page)

{

	struct super_block *sb = inode->i_sb;

	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
@@ -404,7 +398,6 @@ static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buff 
	unsigned offsets[4];

	int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets);

	u64 phys64 = 0;

	unsigned long phys;

	unsigned frag = fragment & uspi->s_fpbmask;



	if (!create) {
@@ -435,16 +428,16 @@ static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buff 


	if (depth == 1) {

		phys64 = ufs_inode_getfrag(inode, offsets[0], fragment,

					   &err, &phys, &new, bh_result->b_page);

					   &err, &new, bh_result->b_page);

	} else {

		int i;

		phys64 = ufs_inode_getfrag(inode, offsets[0], fragment,

					   &err, NULL, NULL, bh_result->b_page);

					   &err, NULL, NULL);

		for (i = 1; i < depth - 1; i++)

			phys64 = ufs_inode_getblock(inode, phys64, offsets[i],

						fragment, &err, NULL, NULL, NULL);

						fragment, &err, NULL, NULL);

		phys64 = ufs_inode_getblock(inode, phys64, offsets[depth - 1],

					fragment, &err, &phys, &new, bh_result->b_page);

					fragment, &err, &new, bh_result->b_page);

	}

out:

	if (phys64) {

CRA Git | Maintained and supported by SUSTech CRA and CCSE