On strict cache mode when we close the last file handle of the inode we should invalidate itt o prevent data coherency problem when we open it again but it has been modified by other clients.
Signed-off-by: Pavel Shilovsky <[email protected]> --- fs/cifs/cifs_fs_sb.h | 1 + fs/cifs/file.c | 6 ++++++ 2 files changed, 7 insertions(+), 0 deletions(-) diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h index e9a393c..be7b159 100644 --- a/fs/cifs/cifs_fs_sb.h +++ b/fs/cifs/cifs_fs_sb.h @@ -40,6 +40,7 @@ #define CIFS_MOUNT_FSCACHE 0x8000 /* local caching enabled */ #define CIFS_MOUNT_MF_SYMLINKS 0x10000 /* Minshall+French Symlinks enabled */ #define CIFS_MOUNT_MULTIUSER 0x20000 /* multiuser mount */ +#define CIFS_MOUNT_STRICT_IO 0x40000 /* strict cache mode */ struct cifs_sb_info { struct rb_root tlink_tree; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 71185d1..81ec50e 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -264,7 +264,9 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) struct inode *inode = cifs_file->dentry->d_inode; struct cifsTconInfo *tcon = tlink_tcon(cifs_file->tlink); struct cifsInodeInfo *cifsi = CIFS_I(inode); + struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct cifsLockInfo *li, *tmp; + bool last_open_file = false; spin_lock(&cifs_file_list_lock); if (--cifs_file->count > 0) { @@ -279,10 +281,14 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) if (list_empty(&cifsi->openFileList)) { cFYI(1, "closing last open instance for inode %p", cifs_file->dentry->d_inode); + last_open_file = true; cifs_set_oplock_level(inode, 0); } spin_unlock(&cifs_file_list_lock); + if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) && last_open_file) + invalidate_remote_inode(inode); + if (!tcon->need_reconnect && !cifs_file->invalidHandle) { int xid, rc; -- 1.7.2.3 -- 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
