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xfs: factor out inode validation for sync

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Separate the validation of inodes found by the radix
tree walk from the radix tree lookup.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
This commit is contained in:
Dave Chinner 2009-06-08 15:35:07 +02:00 committed by Christoph Hellwig
parent 845b6d0cbb
commit 1da8eecab5
1 changed files with 37 additions and 22 deletions
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59
fs/xfs/linux-2.6/xfs_sync.c
View file

@ -49,6 +49,39 @@
#include <linux/freezer.h>
/* must be called with pag_ici_lock held and releases it */
STATIC int
xfs_sync_inode_valid(
struct xfs_inode *ip,
struct xfs_perag *pag)
{
struct inode *inode = VFS_I(ip);
/* nothing to sync during shutdown */
if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
read_unlock(&pag->pag_ici_lock);
return EFSCORRUPTED;
}
/*
* If we can't get a reference on the inode, it must be in reclaim.
* Leave it for the reclaim code to flush. Also avoid inodes that
* haven't been fully initialised.
*/
if (!igrab(inode)) {
read_unlock(&pag->pag_ici_lock);
return ENOENT;
}
read_unlock(&pag->pag_ici_lock);
if (is_bad_inode(inode) || xfs_iflags_test(ip, XFS_INEW)) {
IRELE(ip);
return ENOENT;
}
return 0;
}
STATIC int
xfs_sync_inode_data(
struct xfs_inode *ip,
@ -123,7 +156,6 @@ xfs_sync_inodes_ag(
int last_error = 0;
do {
struct inode *inode;
xfs_inode_t *ip = NULL;
/*
@ -152,27 +184,10 @@ xfs_sync_inodes_ag(
break;
}
/* nothing to sync during shutdown */
if (XFS_FORCED_SHUTDOWN(mp)) {
read_unlock(&pag->pag_ici_lock);
return 0;
}
/*
* If we can't get a reference on the inode, it must be
* in reclaim. Leave it for the reclaim code to flush.
*/
inode = VFS_I(ip);
if (!igrab(inode)) {
read_unlock(&pag->pag_ici_lock);
continue;
}
read_unlock(&pag->pag_ici_lock);
/* avoid new or bad inodes */
if (is_bad_inode(inode) ||
xfs_iflags_test(ip, XFS_INEW)) {
IRELE(ip);
error = xfs_sync_inode_valid(ip, pag);
if (error) {
if (error == EFSCORRUPTED)
return 0;
continue;
}