* [PATCH] kill xfs_get_dir_entry
@ 2008-01-03 12:52 Christoph Hellwig
0 siblings, 0 replies; only message in thread
From: Christoph Hellwig @ 2008-01-03 12:52 UTC (permalink / raw)
To: xfs
Instead of of xfs_get_dir_entry use a macro to get the xfs_inode from
the dentry in the callers and grab the reference manually.
Only grab the reference once as it's fine to keep it over the dmapi
calls. (And even that reference is actually superflous in Linux but
I'll leave that for another patch)
Signed-off-by: Christoph Hellwig <hch@lst.de>
Index: linux-2.6-xfs/fs/xfs/xfs_rename.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_rename.c 2007-11-30 10:15:48.000000000 +0100
+++ linux-2.6-xfs/fs/xfs/xfs_rename.c 2007-12-26 16:35:10.000000000 +0100
@@ -94,7 +94,8 @@ xfs_lock_for_rename(
xfs_inode_t **i_tab,/* array of inode returned, sorted */
int *num_inodes) /* number of inodes in array */
{
- xfs_inode_t *ip1, *ip2, *temp;
+ xfs_inode_t *ip1 = VNAME_TO_INODE(vname1);
+ xfs_inode_t *ip2, *temp;
xfs_ino_t inum1, inum2;
int error;
int i, j;
@@ -110,16 +111,11 @@ xfs_lock_for_rename(
* to see if we still have the right inodes, directories, etc.
*/
lock_mode = xfs_ilock_map_shared(dp1);
- error = xfs_get_dir_entry(vname1, &ip1);
- if (error) {
- xfs_iunlock_map_shared(dp1, lock_mode);
- return error;
- }
+ IHOLD(ip1);
+ xfs_itrace_ref(ip1);
inum1 = ip1->i_ino;
- ASSERT(ip1);
- xfs_itrace_ref(ip1);
/*
* Unlock dp1 and lock dp2 if they are different.
Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_vnode.h
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_vnode.h 2007-12-17 14:49:28.000000000 +0100
+++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_vnode.h 2007-12-26 16:35:10.000000000 +0100
@@ -230,7 +230,7 @@ static inline bhv_vnode_t *vn_grab(bhv_v
*/
#define VNAME(dentry) ((char *) (dentry)->d_name.name)
#define VNAMELEN(dentry) ((dentry)->d_name.len)
-#define VNAME_TO_VNODE(dentry) (vn_from_inode((dentry)->d_inode))
+#define VNAME_TO_INODE(dentry) (XFS_I((dentry)->d_inode))
/*
* Dealing with bad inodes
Index: linux-2.6-xfs/fs/xfs/xfs_utils.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_utils.c 2007-12-21 07:22:56.000000000 +0100
+++ linux-2.6-xfs/fs/xfs/xfs_utils.c 2007-12-26 16:35:10.000000000 +0100
@@ -40,28 +40,6 @@
#include "xfs_itable.h"
#include "xfs_utils.h"
-/*
- * xfs_get_dir_entry is used to get a reference to an inode given
- * its parent directory inode and the name of the file. It does
- * not lock the child inode, and it unlocks the directory before
- * returning. The directory's generation number is returned for
- * use by a later call to xfs_lock_dir_and_entry.
- */
-int
-xfs_get_dir_entry(
- bhv_vname_t *dentry,
- xfs_inode_t **ipp)
-{
- bhv_vnode_t *vp;
-
- vp = VNAME_TO_VNODE(dentry);
-
- *ipp = xfs_vtoi(vp);
- if (!*ipp)
- return XFS_ERROR(ENOENT);
- VN_HOLD(vp);
- return 0;
-}
int
xfs_dir_lookup_int(
Index: linux-2.6-xfs/fs/xfs/xfs_utils.h
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_utils.h 2007-12-17 14:49:28.000000000 +0100
+++ linux-2.6-xfs/fs/xfs/xfs_utils.h 2007-12-26 16:35:10.000000000 +0100
@@ -21,7 +21,6 @@
#define IRELE(ip) VN_RELE(XFS_ITOV(ip))
#define IHOLD(ip) VN_HOLD(XFS_ITOV(ip))
-extern int xfs_get_dir_entry (bhv_vname_t *, xfs_inode_t **);
extern int xfs_dir_lookup_int (xfs_inode_t *, uint, bhv_vname_t *, xfs_ino_t *,
xfs_inode_t **);
extern int xfs_truncate_file (xfs_mount_t *, xfs_inode_t *);
Index: linux-2.6-xfs/fs/xfs/xfs_vnodeops.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_vnodeops.c 2007-12-21 07:45:40.000000000 +0100
+++ linux-2.6-xfs/fs/xfs/xfs_vnodeops.c 2007-12-26 16:35:10.000000000 +0100
@@ -2277,41 +2277,30 @@ xfs_remove(
bhv_vnode_t *dir_vp = XFS_ITOV(dp);
char *name = VNAME(dentry);
xfs_mount_t *mp = dp->i_mount;
- xfs_inode_t *ip;
+ xfs_inode_t *ip = VNAME_TO_INODE(dentry);
+ int namelen = VNAMELEN(dentry);
xfs_trans_t *tp = NULL;
int error = 0;
xfs_bmap_free_t free_list;
xfs_fsblock_t first_block;
int cancel_flags;
int committed;
- int dm_di_mode = 0;
int link_zero;
uint resblks;
- int namelen;
xfs_itrace_entry(dp);
if (XFS_FORCED_SHUTDOWN(mp))
return XFS_ERROR(EIO);
- namelen = VNAMELEN(dentry);
-
- if (!xfs_get_dir_entry(dentry, &ip)) {
- dm_di_mode = ip->i_d.di_mode;
- IRELE(ip);
- }
-
if (DM_EVENT_ENABLED(dp, DM_EVENT_REMOVE)) {
error = XFS_SEND_NAMESP(mp, DM_EVENT_REMOVE, dir_vp,
DM_RIGHT_NULL, NULL, DM_RIGHT_NULL,
- name, NULL, dm_di_mode, 0, 0);
+ name, NULL, ip->i_d.di_mode, 0, 0);
if (error)
return error;
}
- /* From this point on, return through std_return */
- ip = NULL;
-
/*
* We need to get a reference to ip before we get our log
* reservation. The reason for this is that we cannot call
@@ -2324,13 +2313,7 @@ xfs_remove(
* when we call xfs_iget. Instead we get an unlocked reference
* to the inode before getting our log reservation.
*/
- error = xfs_get_dir_entry(dentry, &ip);
- if (error) {
- REMOVE_DEBUG_TRACE(__LINE__);
- goto std_return;
- }
-
- dm_di_mode = ip->i_d.di_mode;
+ IHOLD(ip);
xfs_itrace_entry(ip);
xfs_itrace_ref(ip);
@@ -2474,7 +2457,7 @@ xfs_remove(
(void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTREMOVE,
dir_vp, DM_RIGHT_NULL,
NULL, DM_RIGHT_NULL,
- name, NULL, dm_di_mode, error, 0);
+ name, NULL, ip->i_d.di_mode, error, 0);
}
return error;
@@ -2891,14 +2874,13 @@ xfs_rmdir(
char *name = VNAME(dentry);
int namelen = VNAMELEN(dentry);
xfs_mount_t *mp = dp->i_mount;
- xfs_inode_t *cdp; /* child directory */
+ xfs_inode_t *cdp = VNAME_TO_INODE(dentry);
xfs_trans_t *tp;
int error;
xfs_bmap_free_t free_list;
xfs_fsblock_t first_block;
int cancel_flags;
int committed;
- int dm_di_mode = S_IFDIR;
int last_cdp_link;
uint resblks;
@@ -2907,24 +2889,15 @@ xfs_rmdir(
if (XFS_FORCED_SHUTDOWN(mp))
return XFS_ERROR(EIO);
- if (!xfs_get_dir_entry(dentry, &cdp)) {
- dm_di_mode = cdp->i_d.di_mode;
- IRELE(cdp);
- }
-
if (DM_EVENT_ENABLED(dp, DM_EVENT_REMOVE)) {
error = XFS_SEND_NAMESP(mp, DM_EVENT_REMOVE,
dir_vp, DM_RIGHT_NULL,
NULL, DM_RIGHT_NULL,
- name, NULL, dm_di_mode, 0, 0);
+ name, NULL, cdp->i_d.di_mode, 0, 0);
if (error)
return XFS_ERROR(error);
}
- /* Return through std_return after this point. */
-
- cdp = NULL;
-
/*
* We need to get a reference to cdp before we get our log
* reservation. The reason for this is that we cannot call
@@ -2937,13 +2910,7 @@ xfs_rmdir(
* when we call xfs_iget. Instead we get an unlocked reference
* to the inode before getting our log reservation.
*/
- error = xfs_get_dir_entry(dentry, &cdp);
- if (error) {
- REMOVE_DEBUG_TRACE(__LINE__);
- goto std_return;
- }
- mp = dp->i_mount;
- dm_di_mode = cdp->i_d.di_mode;
+ IHOLD(cdp);
/*
* Get the dquots for the inodes.
@@ -3100,7 +3067,7 @@ xfs_rmdir(
(void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTREMOVE,
dir_vp, DM_RIGHT_NULL,
NULL, DM_RIGHT_NULL,
- name, NULL, dm_di_mode,
+ name, NULL, cdp->i_d.di_mode,
error, 0);
}
return error;
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