From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Dan Carpenter <error27@gmail.com>
Subject: fs/btrfs/send.c:8344 btrfs_ioctl_send() warn: Function too hairy. No more merges.
Date: Sun, 19 Mar 2023 21:55:20 +0800 [thread overview]
Message-ID: <202303192151.4STwHGD6-lkp@intel.com> (raw)
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Filipe Manana <fdmanana@suse.com>
CC: David Sterba <dsterba@suse.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a3671bd86a9770e34969522d29bb30a1b66fd88a
commit: 66d04209e5a8d3fc47900de6bd0c319790a52b3e btrfs: send: cache leaf to roots mapping during backref walking
date: 3 months ago
:::::: branch date: 15 hours ago
:::::: commit date: 3 months ago
config: riscv-randconfig-m031-20230319 (https://download.01.org/0day-ci/archive/20230319/202303192151.4STwHGD6-lkp@intel.com/config)
compiler: riscv32-linux-gcc (GCC) 12.1.0
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Link: https://lore.kernel.org/r/202303192151.4STwHGD6-lkp@intel.com/
smatch warnings:
fs/btrfs/send.c:8344 btrfs_ioctl_send() warn: Function too hairy. No more merges.
vim +8344 fs/btrfs/send.c
62d54f3a7fa27e Filipe Manana 2019-04-22 8008
9ad1230533efb6 Sahil Kang 2022-01-15 8009 long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg)
31db9f7c23fbf7 Alexander Block 2012-07-25 8010 {
31db9f7c23fbf7 Alexander Block 2012-07-25 8011 int ret = 0;
9ad1230533efb6 Sahil Kang 2022-01-15 8012 struct btrfs_root *send_root = BTRFS_I(inode)->root;
0b246afa62b0cf Jeff Mahoney 2016-06-22 8013 struct btrfs_fs_info *fs_info = send_root->fs_info;
31db9f7c23fbf7 Alexander Block 2012-07-25 8014 struct btrfs_root *clone_root;
31db9f7c23fbf7 Alexander Block 2012-07-25 8015 struct send_ctx *sctx = NULL;
31db9f7c23fbf7 Alexander Block 2012-07-25 8016 u32 i;
31db9f7c23fbf7 Alexander Block 2012-07-25 8017 u64 *clone_sources_tmp = NULL;
2c68653787f91c David Sterba 2013-12-16 8018 int clone_sources_to_rollback = 0;
bae12df966f0e1 Denis Efremov 2020-09-21 8019 size_t alloc_size;
896c14f97f700a Wang Shilong 2014-01-07 8020 int sort_clone_roots = 0;
31db9f7c23fbf7 Alexander Block 2012-07-25 8021
31db9f7c23fbf7 Alexander Block 2012-07-25 8022 if (!capable(CAP_SYS_ADMIN))
31db9f7c23fbf7 Alexander Block 2012-07-25 8023 return -EPERM;
31db9f7c23fbf7 Alexander Block 2012-07-25 8024
2c68653787f91c David Sterba 2013-12-16 8025 /*
2c68653787f91c David Sterba 2013-12-16 8026 * The subvolume must remain read-only during send, protect against
521e0546c970c3 David Sterba 2014-04-15 8027 * making it RW. This also protects against deletion.
2c68653787f91c David Sterba 2013-12-16 8028 */
2c68653787f91c David Sterba 2013-12-16 8029 spin_lock(&send_root->root_item_lock);
62d54f3a7fa27e Filipe Manana 2019-04-22 8030 if (btrfs_root_readonly(send_root) && send_root->dedupe_in_progress) {
62d54f3a7fa27e Filipe Manana 2019-04-22 8031 dedupe_in_progress_warn(send_root);
62d54f3a7fa27e Filipe Manana 2019-04-22 8032 spin_unlock(&send_root->root_item_lock);
62d54f3a7fa27e Filipe Manana 2019-04-22 8033 return -EAGAIN;
62d54f3a7fa27e Filipe Manana 2019-04-22 8034 }
2c68653787f91c David Sterba 2013-12-16 8035 send_root->send_in_progress++;
2c68653787f91c David Sterba 2013-12-16 8036 spin_unlock(&send_root->root_item_lock);
2c68653787f91c David Sterba 2013-12-16 8037
2c68653787f91c David Sterba 2013-12-16 8038 /*
2c68653787f91c David Sterba 2013-12-16 8039 * Userspace tools do the checks and warn the user if it's
2c68653787f91c David Sterba 2013-12-16 8040 * not RO.
2c68653787f91c David Sterba 2013-12-16 8041 */
2c68653787f91c David Sterba 2013-12-16 8042 if (!btrfs_root_readonly(send_root)) {
2c68653787f91c David Sterba 2013-12-16 8043 ret = -EPERM;
2c68653787f91c David Sterba 2013-12-16 8044 goto out;
2c68653787f91c David Sterba 2013-12-16 8045 }
2c68653787f91c David Sterba 2013-12-16 8046
457ae7268b29c3 Dan Carpenter 2017-03-17 8047 /*
457ae7268b29c3 Dan Carpenter 2017-03-17 8048 * Check that we don't overflow at later allocations, we request
457ae7268b29c3 Dan Carpenter 2017-03-17 8049 * clone_sources_count + 1 items, and compare to unsigned long inside
457ae7268b29c3 Dan Carpenter 2017-03-17 8050 * access_ok.
457ae7268b29c3 Dan Carpenter 2017-03-17 8051 */
f5ecec3ce21f70 Dan Carpenter 2016-04-13 8052 if (arg->clone_sources_count >
457ae7268b29c3 Dan Carpenter 2017-03-17 8053 ULONG_MAX / sizeof(struct clone_root) - 1) {
f5ecec3ce21f70 Dan Carpenter 2016-04-13 8054 ret = -EINVAL;
f5ecec3ce21f70 Dan Carpenter 2016-04-13 8055 goto out;
f5ecec3ce21f70 Dan Carpenter 2016-04-13 8056 }
f5ecec3ce21f70 Dan Carpenter 2016-04-13 8057
c2c71324ecb471 Stefan Behrens 2013-04-10 8058 if (arg->flags & ~BTRFS_SEND_FLAG_MASK) {
cb95e7bf7ba481 Mark Fasheh 2013-02-04 8059 ret = -EINVAL;
cb95e7bf7ba481 Mark Fasheh 2013-02-04 8060 goto out;
cb95e7bf7ba481 Mark Fasheh 2013-02-04 8061 }
cb95e7bf7ba481 Mark Fasheh 2013-02-04 8062
e780b0d1c1523e David Sterba 2016-01-18 8063 sctx = kzalloc(sizeof(struct send_ctx), GFP_KERNEL);
31db9f7c23fbf7 Alexander Block 2012-07-25 8064 if (!sctx) {
31db9f7c23fbf7 Alexander Block 2012-07-25 8065 ret = -ENOMEM;
31db9f7c23fbf7 Alexander Block 2012-07-25 8066 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8067 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8068
31db9f7c23fbf7 Alexander Block 2012-07-25 8069 INIT_LIST_HEAD(&sctx->new_refs);
31db9f7c23fbf7 Alexander Block 2012-07-25 8070 INIT_LIST_HEAD(&sctx->deleted_refs);
5b8418b84303d9 David Sterba 2022-07-15 8071 INIT_RADIX_TREE(&sctx->name_cache, GFP_KERNEL);
31db9f7c23fbf7 Alexander Block 2012-07-25 8072 INIT_LIST_HEAD(&sctx->name_cache_list);
31db9f7c23fbf7 Alexander Block 2012-07-25 8073
66d04209e5a8d3 Filipe Manana 2022-11-01 8074 INIT_LIST_HEAD(&sctx->backref_cache.lru_list);
66d04209e5a8d3 Filipe Manana 2022-11-01 8075 mt_init(&sctx->backref_cache.entries);
66d04209e5a8d3 Filipe Manana 2022-11-01 8076
cb95e7bf7ba481 Mark Fasheh 2013-02-04 8077 sctx->flags = arg->flags;
cb95e7bf7ba481 Mark Fasheh 2013-02-04 8078
e77fbf990316d4 David Sterba 2021-10-22 8079 if (arg->flags & BTRFS_SEND_FLAG_VERSION) {
e77fbf990316d4 David Sterba 2021-10-22 8080 if (arg->version > BTRFS_SEND_STREAM_VERSION) {
e77fbf990316d4 David Sterba 2021-10-22 8081 ret = -EPROTO;
e77fbf990316d4 David Sterba 2021-10-22 8082 goto out;
e77fbf990316d4 David Sterba 2021-10-22 8083 }
e77fbf990316d4 David Sterba 2021-10-22 8084 /* Zero means "use the highest version" */
e77fbf990316d4 David Sterba 2021-10-22 8085 sctx->proto = arg->version ?: BTRFS_SEND_STREAM_VERSION;
e77fbf990316d4 David Sterba 2021-10-22 8086 } else {
e77fbf990316d4 David Sterba 2021-10-22 8087 sctx->proto = 1;
e77fbf990316d4 David Sterba 2021-10-22 8088 }
d6815592806f48 Omar Sandoval 2022-03-17 8089 if ((arg->flags & BTRFS_SEND_FLAG_COMPRESSED) && sctx->proto < 2) {
d6815592806f48 Omar Sandoval 2022-03-17 8090 ret = -EINVAL;
d6815592806f48 Omar Sandoval 2022-03-17 8091 goto out;
d6815592806f48 Omar Sandoval 2022-03-17 8092 }
e77fbf990316d4 David Sterba 2021-10-22 8093
31db9f7c23fbf7 Alexander Block 2012-07-25 8094 sctx->send_filp = fget(arg->send_fd);
ecc7ada77b5cd1 Tsutomu Itoh 2013-04-19 8095 if (!sctx->send_filp) {
ecc7ada77b5cd1 Tsutomu Itoh 2013-04-19 8096 ret = -EBADF;
31db9f7c23fbf7 Alexander Block 2012-07-25 8097 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8098 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8099
31db9f7c23fbf7 Alexander Block 2012-07-25 8100 sctx->send_root = send_root;
521e0546c970c3 David Sterba 2014-04-15 8101 /*
521e0546c970c3 David Sterba 2014-04-15 8102 * Unlikely but possible, if the subvolume is marked for deletion but
521e0546c970c3 David Sterba 2014-04-15 8103 * is slow to remove the directory entry, send can still be started
521e0546c970c3 David Sterba 2014-04-15 8104 */
521e0546c970c3 David Sterba 2014-04-15 8105 if (btrfs_root_dead(sctx->send_root)) {
521e0546c970c3 David Sterba 2014-04-15 8106 ret = -EPERM;
521e0546c970c3 David Sterba 2014-04-15 8107 goto out;
521e0546c970c3 David Sterba 2014-04-15 8108 }
521e0546c970c3 David Sterba 2014-04-15 8109
31db9f7c23fbf7 Alexander Block 2012-07-25 8110 sctx->clone_roots_cnt = arg->clone_sources_count;
31db9f7c23fbf7 Alexander Block 2012-07-25 8111
a4b333f2277b13 Omar Sandoval 2022-04-04 8112 if (sctx->proto >= 2) {
a4b333f2277b13 Omar Sandoval 2022-04-04 8113 u32 send_buf_num_pages;
a4b333f2277b13 Omar Sandoval 2022-04-04 8114
875c627c5f2045 Wang Yugui 2022-10-19 8115 sctx->send_max_size = BTRFS_SEND_BUF_SIZE_V2;
a4b333f2277b13 Omar Sandoval 2022-04-04 8116 sctx->send_buf = vmalloc(sctx->send_max_size);
a4b333f2277b13 Omar Sandoval 2022-04-04 8117 if (!sctx->send_buf) {
a4b333f2277b13 Omar Sandoval 2022-04-04 8118 ret = -ENOMEM;
a4b333f2277b13 Omar Sandoval 2022-04-04 8119 goto out;
a4b333f2277b13 Omar Sandoval 2022-04-04 8120 }
a4b333f2277b13 Omar Sandoval 2022-04-04 8121 send_buf_num_pages = sctx->send_max_size >> PAGE_SHIFT;
a4b333f2277b13 Omar Sandoval 2022-04-04 8122 sctx->send_buf_pages = kcalloc(send_buf_num_pages,
a4b333f2277b13 Omar Sandoval 2022-04-04 8123 sizeof(*sctx->send_buf_pages),
a4b333f2277b13 Omar Sandoval 2022-04-04 8124 GFP_KERNEL);
a4b333f2277b13 Omar Sandoval 2022-04-04 8125 if (!sctx->send_buf_pages) {
a4b333f2277b13 Omar Sandoval 2022-04-04 8126 ret = -ENOMEM;
a4b333f2277b13 Omar Sandoval 2022-04-04 8127 goto out;
a4b333f2277b13 Omar Sandoval 2022-04-04 8128 }
a4b333f2277b13 Omar Sandoval 2022-04-04 8129 for (i = 0; i < send_buf_num_pages; i++) {
a4b333f2277b13 Omar Sandoval 2022-04-04 8130 sctx->send_buf_pages[i] =
a4b333f2277b13 Omar Sandoval 2022-04-04 8131 vmalloc_to_page(sctx->send_buf + (i << PAGE_SHIFT));
a4b333f2277b13 Omar Sandoval 2022-04-04 8132 }
a4b333f2277b13 Omar Sandoval 2022-04-04 8133 } else {
b7c14f23fb604f Omar Sandoval 2022-03-17 8134 sctx->send_max_size = BTRFS_SEND_BUF_SIZE_V1;
752ade68cbd81d Michal Hocko 2017-05-08 8135 sctx->send_buf = kvmalloc(sctx->send_max_size, GFP_KERNEL);
a4b333f2277b13 Omar Sandoval 2022-04-04 8136 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8137 if (!sctx->send_buf) {
31db9f7c23fbf7 Alexander Block 2012-07-25 8138 ret = -ENOMEM;
31db9f7c23fbf7 Alexander Block 2012-07-25 8139 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8140 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8141
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8142 sctx->pending_dir_moves = RB_ROOT;
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8143 sctx->waiting_dir_moves = RB_ROOT;
9dc442143b9874 Filipe Manana 2014-02-19 8144 sctx->orphan_dirs = RB_ROOT;
3aa5bd367fa5a3 BingJing Chang 2022-07-12 8145 sctx->rbtree_new_refs = RB_ROOT;
3aa5bd367fa5a3 BingJing Chang 2022-07-12 8146 sctx->rbtree_deleted_refs = RB_ROOT;
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8147
bae12df966f0e1 Denis Efremov 2020-09-21 8148 sctx->clone_roots = kvcalloc(sizeof(*sctx->clone_roots),
bae12df966f0e1 Denis Efremov 2020-09-21 8149 arg->clone_sources_count + 1,
bae12df966f0e1 Denis Efremov 2020-09-21 8150 GFP_KERNEL);
31db9f7c23fbf7 Alexander Block 2012-07-25 8151 if (!sctx->clone_roots) {
31db9f7c23fbf7 Alexander Block 2012-07-25 8152 ret = -ENOMEM;
31db9f7c23fbf7 Alexander Block 2012-07-25 8153 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8154 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8155
bae12df966f0e1 Denis Efremov 2020-09-21 8156 alloc_size = array_size(sizeof(*arg->clone_sources),
bae12df966f0e1 Denis Efremov 2020-09-21 8157 arg->clone_sources_count);
e55d1153dbf484 David Sterba 2016-04-11 8158
31db9f7c23fbf7 Alexander Block 2012-07-25 8159 if (arg->clone_sources_count) {
752ade68cbd81d Michal Hocko 2017-05-08 8160 clone_sources_tmp = kvmalloc(alloc_size, GFP_KERNEL);
31db9f7c23fbf7 Alexander Block 2012-07-25 8161 if (!clone_sources_tmp) {
31db9f7c23fbf7 Alexander Block 2012-07-25 8162 ret = -ENOMEM;
31db9f7c23fbf7 Alexander Block 2012-07-25 8163 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8164 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8165
31db9f7c23fbf7 Alexander Block 2012-07-25 8166 ret = copy_from_user(clone_sources_tmp, arg->clone_sources,
e55d1153dbf484 David Sterba 2016-04-11 8167 alloc_size);
31db9f7c23fbf7 Alexander Block 2012-07-25 8168 if (ret) {
31db9f7c23fbf7 Alexander Block 2012-07-25 8169 ret = -EFAULT;
31db9f7c23fbf7 Alexander Block 2012-07-25 8170 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8171 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8172
31db9f7c23fbf7 Alexander Block 2012-07-25 8173 for (i = 0; i < arg->clone_sources_count; i++) {
56e9357a1e8167 David Sterba 2020-05-15 8174 clone_root = btrfs_get_fs_root(fs_info,
56e9357a1e8167 David Sterba 2020-05-15 8175 clone_sources_tmp[i], true);
31db9f7c23fbf7 Alexander Block 2012-07-25 8176 if (IS_ERR(clone_root)) {
31db9f7c23fbf7 Alexander Block 2012-07-25 8177 ret = PTR_ERR(clone_root);
31db9f7c23fbf7 Alexander Block 2012-07-25 8178 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8179 }
2c68653787f91c David Sterba 2013-12-16 8180 spin_lock(&clone_root->root_item_lock);
5cc2b17e80cf57 Filipe Manana 2015-03-02 8181 if (!btrfs_root_readonly(clone_root) ||
5cc2b17e80cf57 Filipe Manana 2015-03-02 8182 btrfs_root_dead(clone_root)) {
2c68653787f91c David Sterba 2013-12-16 8183 spin_unlock(&clone_root->root_item_lock);
0024652895e347 Josef Bacik 2020-01-24 8184 btrfs_put_root(clone_root);
2c68653787f91c David Sterba 2013-12-16 8185 ret = -EPERM;
2c68653787f91c David Sterba 2013-12-16 8186 goto out;
2c68653787f91c David Sterba 2013-12-16 8187 }
62d54f3a7fa27e Filipe Manana 2019-04-22 8188 if (clone_root->dedupe_in_progress) {
62d54f3a7fa27e Filipe Manana 2019-04-22 8189 dedupe_in_progress_warn(clone_root);
62d54f3a7fa27e Filipe Manana 2019-04-22 8190 spin_unlock(&clone_root->root_item_lock);
0024652895e347 Josef Bacik 2020-01-24 8191 btrfs_put_root(clone_root);
62d54f3a7fa27e Filipe Manana 2019-04-22 8192 ret = -EAGAIN;
62d54f3a7fa27e Filipe Manana 2019-04-22 8193 goto out;
62d54f3a7fa27e Filipe Manana 2019-04-22 8194 }
2f1f465ae6da24 Filipe Manana 2015-03-02 8195 clone_root->send_in_progress++;
2c68653787f91c David Sterba 2013-12-16 8196 spin_unlock(&clone_root->root_item_lock);
18f687d5384493 Wang Shilong 2014-01-07 8197
31db9f7c23fbf7 Alexander Block 2012-07-25 8198 sctx->clone_roots[i].root = clone_root;
2f1f465ae6da24 Filipe Manana 2015-03-02 8199 clone_sources_to_rollback = i + 1;
31db9f7c23fbf7 Alexander Block 2012-07-25 8200 }
2f91306a378099 David Sterba 2016-04-11 8201 kvfree(clone_sources_tmp);
31db9f7c23fbf7 Alexander Block 2012-07-25 8202 clone_sources_tmp = NULL;
31db9f7c23fbf7 Alexander Block 2012-07-25 8203 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8204
31db9f7c23fbf7 Alexander Block 2012-07-25 8205 if (arg->parent_root) {
56e9357a1e8167 David Sterba 2020-05-15 8206 sctx->parent_root = btrfs_get_fs_root(fs_info, arg->parent_root,
56e9357a1e8167 David Sterba 2020-05-15 8207 true);
b1b195969fe6d9 Stefan Behrens 2013-05-13 8208 if (IS_ERR(sctx->parent_root)) {
b1b195969fe6d9 Stefan Behrens 2013-05-13 8209 ret = PTR_ERR(sctx->parent_root);
31db9f7c23fbf7 Alexander Block 2012-07-25 8210 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8211 }
18f687d5384493 Wang Shilong 2014-01-07 8212
2c68653787f91c David Sterba 2013-12-16 8213 spin_lock(&sctx->parent_root->root_item_lock);
2c68653787f91c David Sterba 2013-12-16 8214 sctx->parent_root->send_in_progress++;
521e0546c970c3 David Sterba 2014-04-15 8215 if (!btrfs_root_readonly(sctx->parent_root) ||
521e0546c970c3 David Sterba 2014-04-15 8216 btrfs_root_dead(sctx->parent_root)) {
2c68653787f91c David Sterba 2013-12-16 8217 spin_unlock(&sctx->parent_root->root_item_lock);
2c68653787f91c David Sterba 2013-12-16 8218 ret = -EPERM;
2c68653787f91c David Sterba 2013-12-16 8219 goto out;
2c68653787f91c David Sterba 2013-12-16 8220 }
62d54f3a7fa27e Filipe Manana 2019-04-22 8221 if (sctx->parent_root->dedupe_in_progress) {
62d54f3a7fa27e Filipe Manana 2019-04-22 8222 dedupe_in_progress_warn(sctx->parent_root);
62d54f3a7fa27e Filipe Manana 2019-04-22 8223 spin_unlock(&sctx->parent_root->root_item_lock);
62d54f3a7fa27e Filipe Manana 2019-04-22 8224 ret = -EAGAIN;
62d54f3a7fa27e Filipe Manana 2019-04-22 8225 goto out;
62d54f3a7fa27e Filipe Manana 2019-04-22 8226 }
2c68653787f91c David Sterba 2013-12-16 8227 spin_unlock(&sctx->parent_root->root_item_lock);
31db9f7c23fbf7 Alexander Block 2012-07-25 8228 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8229
31db9f7c23fbf7 Alexander Block 2012-07-25 8230 /*
31db9f7c23fbf7 Alexander Block 2012-07-25 8231 * Clones from send_root are allowed, but only if the clone source
31db9f7c23fbf7 Alexander Block 2012-07-25 8232 * is behind the current send position. This is checked while searching
31db9f7c23fbf7 Alexander Block 2012-07-25 8233 * for possible clone sources.
31db9f7c23fbf7 Alexander Block 2012-07-25 8234 */
6f9a3da5da9e7e Josef Bacik 2020-01-24 8235 sctx->clone_roots[sctx->clone_roots_cnt++].root =
0024652895e347 Josef Bacik 2020-01-24 8236 btrfs_grab_root(sctx->send_root);
31db9f7c23fbf7 Alexander Block 2012-07-25 8237
31db9f7c23fbf7 Alexander Block 2012-07-25 8238 /* We do a bsearch later */
31db9f7c23fbf7 Alexander Block 2012-07-25 8239 sort(sctx->clone_roots, sctx->clone_roots_cnt,
31db9f7c23fbf7 Alexander Block 2012-07-25 8240 sizeof(*sctx->clone_roots), __clone_root_cmp_sort,
31db9f7c23fbf7 Alexander Block 2012-07-25 8241 NULL);
896c14f97f700a Wang Shilong 2014-01-07 8242 sort_clone_roots = 1;
31db9f7c23fbf7 Alexander Block 2012-07-25 8243
9f89d5de8631c7 Filipe Manana 2019-04-15 8244 ret = flush_delalloc_roots(sctx);
9f89d5de8631c7 Filipe Manana 2019-04-15 8245 if (ret)
9f89d5de8631c7 Filipe Manana 2019-04-15 8246 goto out;
9f89d5de8631c7 Filipe Manana 2019-04-15 8247
e5fa8f865b3324 Filipe Manana 2014-10-21 8248 ret = ensure_commit_roots_uptodate(sctx);
e5fa8f865b3324 Filipe Manana 2014-10-21 8249 if (ret)
e5fa8f865b3324 Filipe Manana 2014-10-21 8250 goto out;
e5fa8f865b3324 Filipe Manana 2014-10-21 8251
31db9f7c23fbf7 Alexander Block 2012-07-25 8252 ret = send_subvol(sctx);
31db9f7c23fbf7 Alexander Block 2012-07-25 8253 if (ret < 0)
31db9f7c23fbf7 Alexander Block 2012-07-25 8254 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8255
c2c71324ecb471 Stefan Behrens 2013-04-10 8256 if (!(sctx->flags & BTRFS_SEND_FLAG_OMIT_END_CMD)) {
31db9f7c23fbf7 Alexander Block 2012-07-25 8257 ret = begin_cmd(sctx, BTRFS_SEND_C_END);
31db9f7c23fbf7 Alexander Block 2012-07-25 8258 if (ret < 0)
31db9f7c23fbf7 Alexander Block 2012-07-25 8259 goto out;
31db9f7c23fbf7 Alexander Block 2012-07-25 8260 ret = send_cmd(sctx);
31db9f7c23fbf7 Alexander Block 2012-07-25 8261 if (ret < 0)
31db9f7c23fbf7 Alexander Block 2012-07-25 8262 goto out;
c2c71324ecb471 Stefan Behrens 2013-04-10 8263 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8264
31db9f7c23fbf7 Alexander Block 2012-07-25 8265 out:
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8266 WARN_ON(sctx && !ret && !RB_EMPTY_ROOT(&sctx->pending_dir_moves));
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8267 while (sctx && !RB_EMPTY_ROOT(&sctx->pending_dir_moves)) {
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8268 struct rb_node *n;
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8269 struct pending_dir_move *pm;
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8270
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8271 n = rb_first(&sctx->pending_dir_moves);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8272 pm = rb_entry(n, struct pending_dir_move, node);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8273 while (!list_empty(&pm->list)) {
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8274 struct pending_dir_move *pm2;
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8275
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8276 pm2 = list_first_entry(&pm->list,
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8277 struct pending_dir_move, list);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8278 free_pending_move(sctx, pm2);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8279 }
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8280 free_pending_move(sctx, pm);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8281 }
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8282
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8283 WARN_ON(sctx && !ret && !RB_EMPTY_ROOT(&sctx->waiting_dir_moves));
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8284 while (sctx && !RB_EMPTY_ROOT(&sctx->waiting_dir_moves)) {
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8285 struct rb_node *n;
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8286 struct waiting_dir_move *dm;
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8287
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8288 n = rb_first(&sctx->waiting_dir_moves);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8289 dm = rb_entry(n, struct waiting_dir_move, node);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8290 rb_erase(&dm->node, &sctx->waiting_dir_moves);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8291 kfree(dm);
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8292 }
9f03740a956d7a Filipe David Borba Manana 2014-01-22 8293
9dc442143b9874 Filipe Manana 2014-02-19 8294 WARN_ON(sctx && !ret && !RB_EMPTY_ROOT(&sctx->orphan_dirs));
9dc442143b9874 Filipe Manana 2014-02-19 8295 while (sctx && !RB_EMPTY_ROOT(&sctx->orphan_dirs)) {
9dc442143b9874 Filipe Manana 2014-02-19 8296 struct rb_node *n;
9dc442143b9874 Filipe Manana 2014-02-19 8297 struct orphan_dir_info *odi;
9dc442143b9874 Filipe Manana 2014-02-19 8298
9dc442143b9874 Filipe Manana 2014-02-19 8299 n = rb_first(&sctx->orphan_dirs);
9dc442143b9874 Filipe Manana 2014-02-19 8300 odi = rb_entry(n, struct orphan_dir_info, node);
9dc442143b9874 Filipe Manana 2014-02-19 8301 free_orphan_dir_info(sctx, odi);
9dc442143b9874 Filipe Manana 2014-02-19 8302 }
9dc442143b9874 Filipe Manana 2014-02-19 8303
896c14f97f700a Wang Shilong 2014-01-07 8304 if (sort_clone_roots) {
6f9a3da5da9e7e Josef Bacik 2020-01-24 8305 for (i = 0; i < sctx->clone_roots_cnt; i++) {
896c14f97f700a Wang Shilong 2014-01-07 8306 btrfs_root_dec_send_in_progress(
896c14f97f700a Wang Shilong 2014-01-07 8307 sctx->clone_roots[i].root);
0024652895e347 Josef Bacik 2020-01-24 8308 btrfs_put_root(sctx->clone_roots[i].root);
6f9a3da5da9e7e Josef Bacik 2020-01-24 8309 }
896c14f97f700a Wang Shilong 2014-01-07 8310 } else {
6f9a3da5da9e7e Josef Bacik 2020-01-24 8311 for (i = 0; sctx && i < clone_sources_to_rollback; i++) {
896c14f97f700a Wang Shilong 2014-01-07 8312 btrfs_root_dec_send_in_progress(
896c14f97f700a Wang Shilong 2014-01-07 8313 sctx->clone_roots[i].root);
0024652895e347 Josef Bacik 2020-01-24 8314 btrfs_put_root(sctx->clone_roots[i].root);
6f9a3da5da9e7e Josef Bacik 2020-01-24 8315 }
896c14f97f700a Wang Shilong 2014-01-07 8316
896c14f97f700a Wang Shilong 2014-01-07 8317 btrfs_root_dec_send_in_progress(send_root);
896c14f97f700a Wang Shilong 2014-01-07 8318 }
6f9a3da5da9e7e Josef Bacik 2020-01-24 8319 if (sctx && !IS_ERR_OR_NULL(sctx->parent_root)) {
66ef7d65c3fc6e David Sterba 2013-12-17 8320 btrfs_root_dec_send_in_progress(sctx->parent_root);
0024652895e347 Josef Bacik 2020-01-24 8321 btrfs_put_root(sctx->parent_root);
6f9a3da5da9e7e Josef Bacik 2020-01-24 8322 }
2c68653787f91c David Sterba 2013-12-16 8323
2f91306a378099 David Sterba 2016-04-11 8324 kvfree(clone_sources_tmp);
31db9f7c23fbf7 Alexander Block 2012-07-25 8325
31db9f7c23fbf7 Alexander Block 2012-07-25 8326 if (sctx) {
31db9f7c23fbf7 Alexander Block 2012-07-25 8327 if (sctx->send_filp)
31db9f7c23fbf7 Alexander Block 2012-07-25 8328 fput(sctx->send_filp);
31db9f7c23fbf7 Alexander Block 2012-07-25 8329
c03d01f3404282 David Sterba 2016-04-11 8330 kvfree(sctx->clone_roots);
a4b333f2277b13 Omar Sandoval 2022-04-04 8331 kfree(sctx->send_buf_pages);
6ff48ce06b0725 David Sterba 2016-04-11 8332 kvfree(sctx->send_buf);
38622010a6de3a Boris Burkov 2022-08-15 8333 kvfree(sctx->verity_descriptor);
31db9f7c23fbf7 Alexander Block 2012-07-25 8334
31db9f7c23fbf7 Alexander Block 2012-07-25 8335 name_cache_free(sctx);
31db9f7c23fbf7 Alexander Block 2012-07-25 8336
152555b39cebda Filipe Manana 2022-05-17 8337 close_current_inode(sctx);
521b6803f22e7f Filipe Manana 2022-05-05 8338
66d04209e5a8d3 Filipe Manana 2022-11-01 8339 empty_backref_cache(sctx);
66d04209e5a8d3 Filipe Manana 2022-11-01 8340
31db9f7c23fbf7 Alexander Block 2012-07-25 8341 kfree(sctx);
31db9f7c23fbf7 Alexander Block 2012-07-25 8342 }
31db9f7c23fbf7 Alexander Block 2012-07-25 8343
31db9f7c23fbf7 Alexander Block 2012-07-25 @8344 return ret;
:::::: The code at line 8344 was first introduced by commit
:::::: 31db9f7c23fbf7e95026143f79645de6507b583b Btrfs: introduce BTRFS_IOC_SEND for btrfs send/receive
:::::: TO: Alexander Block <ablock84@googlemail.com>
:::::: CC: Alexander Block <ablock84@googlemail.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
reply other threads:[~2023-03-19 13:56 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202303192151.4STwHGD6-lkp@intel.com \
--to=lkp@intel.com \
--cc=error27@gmail.com \
--cc=oe-kbuild@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.