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Commit 94f3cad5 authored by Eric Sandeen's avatar Eric Sandeen Committed by Dave Chinner
Browse files

xfs: check resblks before calling xfs_dir_canenter 



Move the resblks test out of the xfs_dir_canenter,
and into the caller.

This makes a little more sense on the face of it;
xfs_dir_canenter immediately returns if resblks !=0;
and given some of the comments preceding the calls:

 * Check for ability to enter directory entry, if no space reserved.

even more so.

It also facilitates the next patch.

Signed-off-by: default avatarEric Sandeen <sandeen@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
Signed-off-by: default avatarDave Chinner <david@fromorbit.com>
parent 970fd3f0

fs/xfs/libxfs/xfs_dir2.c

+1 −6
Original line number Diff line number Diff line
@@ -535,22 +535,17 @@ out_free: 


/*

 * See if this entry can be added to the directory without allocating space.

 * First checks that the caller couldn't reserve enough space (resblks = 0).

 */

int

xfs_dir_canenter(

	xfs_trans_t	*tp,

	xfs_inode_t	*dp,

	struct xfs_name	*name,		/* name of entry to add */

	uint		resblks)

	struct xfs_name	*name)		/* name of entry to add */

{

	struct xfs_da_args *args;

	int		rval;

	int		v;		/* type-checking value */



	if (resblks)

		return 0;



	ASSERT(S_ISDIR(dp->i_d.di_mode));



	args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);

fs/xfs/libxfs/xfs_dir2.h

+1 −1
Original line number Diff line number Diff line
@@ -136,7 +136,7 @@ extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp, 
				xfs_fsblock_t *first,

				struct xfs_bmap_free *flist, xfs_extlen_t tot);

extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp,

				struct xfs_name *name, uint resblks);

				struct xfs_name *name);



/*

 * Direct call from the bmap code, bypassing the generic directory layer.

fs/xfs/xfs_inode.c

+15 −9
Original line number Diff line number Diff line
@@ -1153,9 +1153,11 @@ xfs_create( 
	if (error)

		goto out_trans_cancel;



	error = xfs_dir_canenter(tp, dp, name, resblks);

	if (!resblks) {

		error = xfs_dir_canenter(tp, dp, name);

		if (error)

			goto out_trans_cancel;

	}



	/*

	 * A newly created regular or special file just has one directory
@@ -1421,9 +1423,11 @@ xfs_link( 
		goto error_return;

	}



	error = xfs_dir_canenter(tp, tdp, target_name, resblks);

	if (!resblks) {

		error = xfs_dir_canenter(tp, tdp, target_name);

		if (error)

			goto error_return;

	}



	xfs_bmap_init(&free_list, &first_block);
@@ -2759,9 +2763,11 @@ xfs_rename( 
		 * If there's no space reservation, check the entry will

		 * fit before actually inserting it.

		 */

		error = xfs_dir_canenter(tp, target_dp, target_name, spaceres);

		if (!spaceres) {

			error = xfs_dir_canenter(tp, target_dp, target_name);

			if (error)

				goto error_return;

		}

		/*

		 * If target does not exist and the rename crosses

		 * directories, adjust the target directory link count

fs/xfs/xfs_symlink.c

+5 −3
Original line number Diff line number Diff line
@@ -269,9 +269,11 @@ xfs_symlink( 
	/*

	 * Check for ability to enter directory entry, if no space reserved.

	 */

	error = xfs_dir_canenter(tp, dp, link_name, resblks);

	if (!resblks) {

		error = xfs_dir_canenter(tp, dp, link_name);

		if (error)

			goto error_return;

	}

	/*

	 * Initialize the bmap freelist prior to calling either

	 * bmapi or the directory create code.