From 00fb4c9f8421c9aac3947d36ffe8e049b95f7ab1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 26 Feb 2015 17:57:14 -0500 Subject: [PATCH] NFS: Remove size hack in nfs_inode_attrs_need_update() Prior to this patch, we used to always OK attribute updates that extended the file size on the assumption that we might be performing writeback. Now that we have attribute barriers to protect the writeback related updates, we should remove this hack, as it can cause truncate() operations to apparently be reverted if/when a readahead or getattr RPC call races with our on-the-wire SETATTR. Signed-off-by: Trond Myklebust Tested-by: Chuck Lever --- fs/nfs/inode.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index cd094d652199..fef65d1e024e 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1238,13 +1238,6 @@ static int nfs_ctime_need_update(const struct inode *inode, const struct nfs_fat return timespec_compare(&fattr->ctime, &inode->i_ctime) > 0; } -static int nfs_size_need_update(const struct inode *inode, const struct nfs_fattr *fattr) -{ - if (!(fattr->valid & NFS_ATTR_FATTR_SIZE)) - return 0; - return nfs_size_to_loff_t(fattr->size) > i_size_read(inode); -} - static atomic_long_t nfs_attr_generation_counter; static unsigned long nfs_read_attr_generation_counter(void) @@ -1393,7 +1386,6 @@ static int nfs_inode_attrs_need_update(const struct inode *inode, const struct n return ((long)fattr->gencount - (long)nfsi->attr_gencount) > 0 || nfs_ctime_need_update(inode, fattr) || - nfs_size_need_update(inode, fattr) || ((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0); } -- 2.39.2