Use invalidate_inode_pages2 that don't leave pages even if shrink_page_list() has a temp ref on them. It prevents a data coherency problem when cifs_invalidate_mapping didn't invalidate pages but the client thinks that a data from the cache is uptodate according to an oplock level (exclusive or II).
Signed-off-by: Pavel Shilovsky <[email protected]> --- fs/cifs/inode.c | 10 ++++++++-- 1 files changed, 8 insertions(+), 2 deletions(-) diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 41e5651..adb6324 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1691,12 +1691,18 @@ cifs_invalidate_mapping(struct inode *inode) cifs_i->invalid_mapping = false; - /* write back any cached data */ if (inode->i_mapping && inode->i_mapping->nrpages != 0) { + /* write back any cached data */ rc = filemap_write_and_wait(inode->i_mapping); mapping_set_error(inode->i_mapping, rc); + rc = invalidate_inode_pages2(inode->i_mapping); + if (rc) { + cERROR(1, "%s: could not invalidate inode %p", __func__, + inode); + cifs_i->invalid_mapping = true; + } } - invalidate_remote_inode(inode); + cifs_fscache_reset_inode_cookie(inode); } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
