From: Trond Myklebust Date: Tue, 11 Sep 2012 20:19:38 +0000 (-0400) Subject: NFS: Write the entire file if a server reboot occurs during fsync() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dcfc4f25461813e8a2dd43b052aa1e0be155742f;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git NFS: Write the entire file if a server reboot occurs during fsync() This is to ensure that we don't clear the NFS_CONTEXT_RESEND_WRITES flag while there are still writes that haven't been resent. Signed-off-by: Trond Myklebust --- diff --git a/fs/nfs/file.c b/fs/nfs/file.c index cc9b56691bef..c814666bbe7f 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -301,6 +301,13 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) mutex_lock(&inode->i_mutex); ret = nfs_file_fsync_commit(file, start, end, datasync); mutex_unlock(&inode->i_mutex); + /* + * If nfs_file_fsync_commit detected a server reboot, then + * resend all dirty pages that might have been covered by + * the NFS_CONTEXT_RESEND_WRITES flag + */ + start = 0; + end = LLONG_MAX; } while (ret == -EAGAIN); return ret; diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index eef1b38a1b08..afddd6639afb 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -105,6 +105,13 @@ nfs4_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) /* application has asked for meta-data sync */ ret = pnfs_layoutcommit_inode(inode, true); mutex_unlock(&inode->i_mutex); + /* + * If nfs_file_fsync_commit detected a server reboot, then + * resend all dirty pages that might have been covered by + * the NFS_CONTEXT_RESEND_WRITES flag + */ + start = 0; + end = LLONG_MAX; } while (ret == -EAGAIN); return ret;