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xfs: check resblks before calling xfs_dir_canenter

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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: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Eric Sandeen
2014-09-09 11:57:52 +10:00
committed by Dave Chinner
parent 970fd3f04d
commit 94f3cad555
4 changed files with 22 additions and 19 deletions
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7
fs/xfs/libxfs/xfs_dir2.c
View File

@@ -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);

2
fs/xfs/libxfs/xfs_dir2.h
View File

@@ -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.