commit: 0f66b5984df2fe1617c05900a39a7ef493ca9de9 From: Peng Tao <[email protected]> Date: Sat, 16 Oct 2010 22:07:46 -0700 Subject: [PATCH] NFS41: do not update isize if inode needs layoutcommit
nfs_update_inode will update isize if there is no queued pages. For pNFS, layoutcommit is supposed to change file size on server, the same effect as queued pages. nfs_update_inode may be called when dirty pages are written back (nfsi->npages==0) but layoutcommit is not sent, and it will change client file size according to server file size. Then client ends up losing what it just writes back in pNFS path. So we should skip updating client file size if file needs layoutcommit. Signed-off-by: Peng Tao <[email protected]> Cc: [email protected] [2.6.39] Signed-off-by: Trond Myklebust <[email protected]> --- fs/nfs/inode.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 144f2a3..3f1eb81 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1294,7 +1294,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) if (new_isize != cur_isize) { /* Do we perhaps have any outstanding writes, or has * the file grown beyond our last write? */ - if (nfsi->npages == 0 || new_isize > cur_isize) { + if ((nfsi->npages == 0 && !test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) || + new_isize > cur_isize) { i_size_write(inode, new_isize); invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; } _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
