From 81f148a910045cd0a139f589a0b42764b172f8f5 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Thu, 25 Jul 2019 20:16:46 +0800 Subject: [PATCH] ceph: invalidate all write mode filp after reconnect Signed-off-by: "Yan, Zheng" Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov --- fs/ceph/caps.c | 13 +++++++++++++ fs/ceph/file.c | 1 + fs/ceph/super.c | 2 ++ fs/ceph/super.h | 3 +++ 4 files changed, 19 insertions(+) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 102192c90edd..d17bde5d4f9a 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2780,12 +2780,17 @@ int ceph_get_caps(struct file *filp, int need, int want, struct ceph_file_info *fi = filp->private_data; struct inode *inode = file_inode(filp); struct ceph_inode_info *ci = ceph_inode(inode); + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); int ret, _got, flags; ret = ceph_pool_perm_check(inode, need); if (ret < 0) return ret; + if ((fi->fmode & CEPH_FILE_MODE_WR) && + fi->filp_gen != READ_ONCE(fsc->filp_gen)) + return -EBADF; + while (true) { if (endoff > 0) check_max_size(inode, endoff); @@ -2814,6 +2819,14 @@ int ceph_get_caps(struct file *filp, int need, int want, if (ret == -EAGAIN) continue; } + + if ((fi->fmode & CEPH_FILE_MODE_WR) && + fi->filp_gen != READ_ONCE(fsc->filp_gen)) { + if (ret >= 0 && _got) + ceph_put_cap_refs(ci, _got); + return -EBADF; + } + if (ret < 0) { if (ret == -ESTALE) { /* session was killed, try renew caps */ diff --git a/fs/ceph/file.c b/fs/ceph/file.c index fb007b75fb17..779bf68afd60 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -234,6 +234,7 @@ static int ceph_init_file_info(struct inode *inode, struct file *file, spin_lock_init(&fi->rw_contexts_lock); INIT_LIST_HEAD(&fi->rw_contexts); fi->meta_err = errseq_sample(&ci->i_meta_err); + fi->filp_gen = READ_ONCE(ceph_inode_to_client(inode)->filp_gen); return 0; } diff --git a/fs/ceph/super.c b/fs/ceph/super.c index a95dd13bb628..630549ac4f48 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -664,6 +664,7 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt, fsc->sb = NULL; fsc->mount_state = CEPH_MOUNT_MOUNTING; + fsc->filp_gen = 1; atomic_long_set(&fsc->writeback_count, 0); @@ -829,6 +830,7 @@ static void ceph_umount_begin(struct super_block *sb) fsc->mount_state = CEPH_MOUNT_SHUTDOWN; ceph_osdc_abort_requests(&fsc->client->osdc, -EIO); ceph_mdsc_force_umount(fsc->mdsc); + fsc->filp_gen++; // invalidate open files } static int ceph_remount(struct super_block *sb, int *flags, char *data) diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 736318210bc9..f5e5f6a6bfb8 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -101,6 +101,8 @@ struct ceph_fs_client { struct ceph_client *client; unsigned long mount_state; + + u32 filp_gen; loff_t max_file_size; struct ceph_mds_client *mdsc; @@ -707,6 +709,7 @@ struct ceph_file_info { struct list_head rw_contexts; errseq_t meta_err; + u32 filp_gen; atomic_t num_locks; }; -- 2.30.2