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authorChristoph Hellwig <hch@infradead.org>2011-12-18 20:00:04 +0000
committerBen Myers <bpm@sgi.com>2012-01-13 12:11:45 -0600
commit673e8e597c06eb81954bf21a10f5cce74a1de8f1 (patch)
treea6d47b0c44dfe24119de8d4c944f7c5c6e2c30dc /fs/xfs/xfs_vnodeops.c
parent099469502f62fbe0d7e4f0b83a2f22538367f734 (diff)
downloadop-kernel-dev-673e8e597c06eb81954bf21a10f5cce74a1de8f1.zip
op-kernel-dev-673e8e597c06eb81954bf21a10f5cce74a1de8f1.tar.gz
xfs: remove xfs_itruncate_data
This wrapper isn't overly useful, not to say rather confusing. Around the call to xfs_itruncate_extents it does: - add tracing - add a few asserts in debug builds - conditionally update the inode size in two places - log the inode Both the tracing and the inode logging can be moved to xfs_itruncate_extents as they are useful for the attribute fork as well - in fact the attr code already does an equivalent xfs_trans_log_inode call just after calling xfs_itruncate_extents. The conditional size updates are a mess, and there was no reason to do them in two places anyway, as the first one was conditional on the inode having extents - but without extents we xfs_itruncate_extents would be a no-op and the placement wouldn't matter anyway. Instead move the size assignments and the asserts that make sense to the callers that want it. As a side effect of this clean up xfs_setattr_size by introducing variables for the old and new inode size, and moving the size updates into a common place. Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_vnodeops.c')
-rw-r--r--fs/xfs/xfs_vnodeops.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index f2fea86..96ff034 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -226,7 +226,14 @@ xfs_free_eofblocks(
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, 0);
- error = xfs_itruncate_data(&tp, ip, ip->i_size);
+ /*
+ * Do not update the on-disk file size. If we update the
+ * on-disk file size and then the system crashes before the
+ * contents of the file are flushed to disk then the files
+ * may be full of holes (ie NULL files bug).
+ */
+ error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK,
+ ip->i_size);
if (error) {
/*
* If we get an error at this point we simply don't
@@ -670,13 +677,19 @@ xfs_inactive(
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, 0);
- error = xfs_itruncate_data(&tp, ip, 0);
+ ip->i_d.di_size = 0;
+ ip->i_size = 0;
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+ error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
if (error) {
xfs_trans_cancel(tp,
XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT);
xfs_iunlock(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL);
return VN_INACTIVE_CACHE;
}
+
+ ASSERT(ip->i_d.di_nextents == 0);
} else if (S_ISLNK(ip->i_d.di_mode)) {
/*
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