From 27b52867925e3aaed090063c1c58a7537e6373f3 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Tue, 6 Nov 2012 09:50:38 -0500 Subject: xfs: add EOFBLOCKS inode tagging/untagging Add the XFS_ICI_EOFBLOCKS_TAG inode tag to identify inodes with speculatively preallocated blocks beyond EOF. An inode is tagged when speculative preallocation occurs and untagged either via truncate down or when post-EOF blocks are freed via release or reclaim. The tag management is intentionally not aggressive to prefer simplicity over the complexity of handling all the corner cases under which post-EOF blocks could be freed (i.e., forward truncation, fallocate, write error conditions, etc.). This means that a tagged inode may or may not have post-EOF blocks after a period of time. The tag is eventually cleared when the inode is released or reclaimed. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/xfs_vnodeops.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/xfs/xfs_vnodeops.c') diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 2ee1f49da0aa..e6e1d11dfdf2 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -238,6 +238,8 @@ xfs_free_eofblocks( } else { error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + if (!error) + xfs_inode_clear_eofblocks_tag(ip); } xfs_iunlock(ip, XFS_ILOCK_EXCL); -- cgit v1.2.3