xfs: simplify inode to transaction joining
Currently we need to either call IHOLD or xfs_trans_ihold on an inode when
joining it to a transaction via xfs_trans_ijoin.
This patches instead makes xfs_trans_ijoin usable on it's own by doing
an implicity xfs_trans_ihold, which also allows us to drop the third
argument. For the case where we want to hold a reference on the inode
a xfs_trans_ijoin_ref wrapper is added which does the IHOLD and marks
the inode for needing an xfs_iput. In addition to the cleaner interface
to the caller this also simplifies the implementation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 161444e..130343a 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -268,8 +268,7 @@
commit_flags = XFS_TRANS_RELEASE_LOG_RES;
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, lock_flags);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
/*
* Only change the c/mtime if we are changing the size
@@ -319,8 +318,7 @@
xfs_iflags_set(ip, XFS_ITRUNCATED);
}
} else if (tp) {
- xfs_trans_ijoin(tp, ip, lock_flags);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
}
/*
@@ -653,10 +651,7 @@
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip,
- XFS_IOLOCK_EXCL |
- XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
error = xfs_itruncate_finish(&tp, ip,
ip->i_size,
@@ -728,8 +723,7 @@
xfs_ilock(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
size = (int)ip->i_d.di_size;
ip->i_d.di_size = 0;
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
/*
* Find the block(s) so we can inval and unmap them.
@@ -773,8 +767,7 @@
* Mark it dirty so it will be logged and moved forward in the log as
* part of every commit.
*/
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
/*
* Get a new, empty transaction to return to our caller.
@@ -907,8 +900,7 @@
goto error_cancel;
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
xfs_idestroy_fork(ip, XFS_ATTR_FORK);
ASSERT(ip->i_d.di_anextents == 0);
@@ -1095,8 +1087,7 @@
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
/*
* normally, we have to run xfs_itruncate_finish sync.
@@ -1129,8 +1120,7 @@
return VN_INACTIVE_CACHE;
}
- xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
} else {
error = xfs_trans_reserve(tp, 0,
XFS_IFREE_LOG_RES(mp),
@@ -1143,8 +1133,7 @@
}
xfs_ilock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
}
/*
@@ -1392,8 +1381,7 @@
* the transaction cancel unlocking dp so don't do it explicitly in the
* error path.
*/
- IHOLD(dp);
- xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin_ref(tp, dp, XFS_ILOCK_EXCL);
unlock_dp_on_error = B_FALSE;
error = xfs_dir_createname(tp, dp, name, ip->i_ino,
@@ -1730,15 +1718,8 @@
xfs_lock_two_inodes(dp, ip, XFS_ILOCK_EXCL);
- /*
- * At this point, we've gotten both the directory and the entry
- * inodes locked.
- */
- IHOLD(ip);
- xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
-
- IHOLD(dp);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin_ref(tp, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL);
/*
* If we're removing a directory perform some additional validation.
@@ -1884,15 +1865,8 @@
xfs_lock_two_inodes(sip, tdp, XFS_ILOCK_EXCL);
- /*
- * Increment vnode ref counts since xfs_trans_commit &
- * xfs_trans_cancel will both unlock the inodes and
- * decrement the associated ref counts.
- */
- IHOLD(sip);
- IHOLD(tdp);
- xfs_trans_ijoin(tp, sip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, tdp, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin_ref(tp, sip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin_ref(tp, tdp, XFS_ILOCK_EXCL);
/*
* If the source has too many links, we can't make any more to it.
@@ -2087,8 +2061,7 @@
* transaction cancel unlocking dp so don't do it explicitly in the
* error path.
*/
- IHOLD(dp);
- xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin_ref(tp, dp, XFS_ILOCK_EXCL);
unlock_dp_on_error = B_FALSE;
/*
@@ -2227,13 +2200,12 @@
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin_ref(tp, ip, XFS_ILOCK_EXCL);
ip->i_d.di_dmevmask = evmask;
ip->i_d.di_dmstate = state;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
- IHOLD(ip);
error = xfs_trans_commit(tp, 0);
return error;
@@ -2366,8 +2338,7 @@
if (error)
goto error1;
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
/*
* Issue the xfs_bmapi() call to allocate the blocks
@@ -2668,8 +2639,7 @@
if (error)
goto error1;
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
/*
* issue the bunmapi() call to free the blocks
@@ -2839,8 +2809,7 @@
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
if ((attr_flags & XFS_ATTR_DMI) == 0) {
ip->i_d.di_mode &= ~S_ISUID;