diff options
| -rw-r--r-- | fs/cifs/connect.c | 6 | ||||
| -rw-r--r-- | fs/cifs/inode.c | 42 | ||||
| -rw-r--r-- | fs/cifs/misc.c | 12 |
3 files changed, 35 insertions, 25 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index bab4422f5815..d0de4fb8ee43 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -4220,6 +4220,12 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol) if (rc) goto error; + /* + * After reconnecting to a different server, unique ids won't + * match anymore, so we disable serverino. This prevents + * dentry revalidation to think the dentry are stale (ESTALE). + */ + cifs_autodisable_serverino(cifs_sb); out: free_xid(xid); return mount_setup_tlink(cifs_sb, ses, tcon); diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 1fe9f3b01703..13fb59aadebc 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -730,7 +730,6 @@ cifs_get_inode_info(struct inode **inode, const char *full_path, FILE_ALL_INFO *data, struct super_block *sb, int xid, const struct cifs_fid *fid) { - bool validinum = false; __u16 srchflgs; int rc = 0, tmprc = ENOSYS; struct cifs_tcon *tcon; @@ -821,7 +820,6 @@ cifs_get_inode_info(struct inode **inode, const char *full_path, (FILE_DIRECTORY_INFO *)data, cifs_sb); fattr.cf_uniqueid = le64_to_cpu( ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId); - validinum = true; cifs_buf_release(srchinf->ntwrk_buf_start); } @@ -840,31 +838,29 @@ cifs_get_inode_info(struct inode **inode, const char *full_path, */ if (*inode == NULL) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { - if (validinum == false) { - if (server->ops->get_srv_inum) - tmprc = server->ops->get_srv_inum(xid, - tcon, cifs_sb, full_path, - &fattr.cf_uniqueid, data); - if (tmprc) { - cifs_dbg(FYI, "GetSrvInodeNum rc %d\n", - tmprc); - fattr.cf_uniqueid = iunique(sb, ROOT_I); - cifs_autodisable_serverino(cifs_sb); - } else if ((fattr.cf_uniqueid == 0) && - strlen(full_path) == 0) { - /* some servers ret bad root ino ie 0 */ - cifs_dbg(FYI, "Invalid (0) inodenum\n"); - fattr.cf_flags |= - CIFS_FATTR_FAKE_ROOT_INO; - fattr.cf_uniqueid = - simple_hashstr(tcon->treeName); - } + if (server->ops->get_srv_inum) + tmprc = server->ops->get_srv_inum(xid, + tcon, cifs_sb, full_path, + &fattr.cf_uniqueid, data); + if (tmprc) { + cifs_dbg(FYI, "GetSrvInodeNum rc %d\n", + tmprc); + fattr.cf_uniqueid = iunique(sb, ROOT_I); + cifs_autodisable_serverino(cifs_sb); + } else if ((fattr.cf_uniqueid == 0) && + strlen(full_path) == 0) { + /* some servers ret bad root ino ie 0 */ + cifs_dbg(FYI, "Invalid (0) inodenum\n"); + fattr.cf_flags |= + CIFS_FATTR_FAKE_ROOT_INO; + fattr.cf_uniqueid = + simple_hashstr(tcon->treeName); } } else fattr.cf_uniqueid = iunique(sb, ROOT_I); } else { - if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && - validinum == false && server->ops->get_srv_inum) { + if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) + && server->ops->get_srv_inum) { /* * Pass a NULL tcon to ensure we don't make a round * trip to the server. This only works for SMB2+. diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 8a41f4eba726..f7c0c6fde552 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -525,9 +525,17 @@ void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { + struct cifs_tcon *tcon = NULL; + + if (cifs_sb->master_tlink) + tcon = cifs_sb_master_tcon(cifs_sb); + cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM; - cifs_dbg(VFS, "Autodisabling the use of server inode numbers on %s. This server doesn't seem to support them properly. Hardlinks will not be recognized on this mount. Consider mounting with the \"noserverino\" option to silence this message.\n", - cifs_sb_master_tcon(cifs_sb)->treeName); + cifs_dbg(VFS, "Autodisabling the use of server inode numbers on %s.\n", + tcon ? tcon->treeName : "new server"); + cifs_dbg(VFS, "The server doesn't seem to support them properly or the files might be on different servers (DFS).\n"); + cifs_dbg(VFS, "Hardlinks will not be recognized on this mount. Consider mounting with the \"noserverino\" option to silence this message.\n"); + } } |