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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-24 21:40:03 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-24 21:40:03 +0300 |
commit | 5b7ad877e4d81f8904ce83982b1ba5c6e83deccb (patch) | |
tree | bacd7d5ff491e222bcc327a900bba17b5c43a46f | |
parent | fa2b906f5148883e2d0be8952767469c2e3de274 (diff) | |
parent | 68516f60c1d8b0a71e516d630f66b99cb50e0150 (diff) | |
download | linux-5b7ad877e4d81f8904ce83982b1ba5c6e83deccb.tar.xz |
Merge tag 'afs-fixes-20231124' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull AFS fixes from David Howells:
- Fix the afs_server_list struct to be cleaned up with RCU
- Fix afs to translate a no-data result from a DNS lookup into ENOENT,
not EDESTADDRREQ for consistency with OpenAFS
- Fix afs to translate a negative DNS lookup result into ENOENT rather
than EDESTADDRREQ
- Fix file locking on R/O volumes to operate in local mode as the
server doesn't handle exclusive locks on such files
- Set SB_RDONLY on superblocks for RO and Backup volumes so that the
VFS can see that they're read only
* tag 'afs-fixes-20231124' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Mark a superblock for an R/O or Backup volume as SB_RDONLY
afs: Fix file locking on R/O volumes to operate in local mode
afs: Return ENOENT if no cell DNS record can be found
afs: Make error on cell lookup failure consistent with OpenAFS
afs: Fix afs_server_list to be cleaned up with RCU
-rw-r--r-- | fs/afs/dynroot.c | 4 | ||||
-rw-r--r-- | fs/afs/internal.h | 1 | ||||
-rw-r--r-- | fs/afs/server_list.c | 2 | ||||
-rw-r--r-- | fs/afs/super.c | 4 | ||||
-rw-r--r-- | fs/afs/vl_rotate.c | 10 |
5 files changed, 18 insertions, 3 deletions
diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c index 4d04ef2d3ae7..1fa8cf23bd36 100644 --- a/fs/afs/dynroot.c +++ b/fs/afs/dynroot.c @@ -132,8 +132,8 @@ static int afs_probe_cell_name(struct dentry *dentry) ret = dns_query(net->net, "afsdb", name, len, "srv=1", NULL, NULL, false); - if (ret == -ENODATA) - ret = -EDESTADDRREQ; + if (ret == -ENODATA || ret == -ENOKEY) + ret = -ENOENT; return ret; } diff --git a/fs/afs/internal.h b/fs/afs/internal.h index c9cef3782b4a..a812952be1c9 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -553,6 +553,7 @@ struct afs_server_entry { }; struct afs_server_list { + struct rcu_head rcu; afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */ refcount_t usage; unsigned char nr_servers; diff --git a/fs/afs/server_list.c b/fs/afs/server_list.c index ed9056703505..b59896b1de0a 100644 --- a/fs/afs/server_list.c +++ b/fs/afs/server_list.c @@ -17,7 +17,7 @@ void afs_put_serverlist(struct afs_net *net, struct afs_server_list *slist) for (i = 0; i < slist->nr_servers; i++) afs_unuse_server(net, slist->servers[i].server, afs_server_trace_put_slist); - kfree(slist); + kfree_rcu(slist, rcu); } } diff --git a/fs/afs/super.c b/fs/afs/super.c index 95d713074dc8..a01a0fb2cdbb 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -407,6 +407,10 @@ static int afs_validate_fc(struct fs_context *fc) return PTR_ERR(volume); ctx->volume = volume; + if (volume->type != AFSVL_RWVOL) { + ctx->flock_mode = afs_flock_mode_local; + fc->sb_flags |= SB_RDONLY; + } } return 0; diff --git a/fs/afs/vl_rotate.c b/fs/afs/vl_rotate.c index 488e58490b16..eb415ce56360 100644 --- a/fs/afs/vl_rotate.c +++ b/fs/afs/vl_rotate.c @@ -58,6 +58,12 @@ static bool afs_start_vl_iteration(struct afs_vl_cursor *vc) } /* Status load is ordered after lookup counter load */ + if (cell->dns_status == DNS_LOOKUP_GOT_NOT_FOUND) { + pr_warn("No record of cell %s\n", cell->name); + vc->error = -ENOENT; + return false; + } + if (cell->dns_source == DNS_RECORD_UNAVAILABLE) { vc->error = -EDESTADDRREQ; return false; @@ -285,6 +291,7 @@ failed: */ static void afs_vl_dump_edestaddrreq(const struct afs_vl_cursor *vc) { + struct afs_cell *cell = vc->cell; static int count; int i; @@ -294,6 +301,9 @@ static void afs_vl_dump_edestaddrreq(const struct afs_vl_cursor *vc) rcu_read_lock(); pr_notice("EDESTADDR occurred\n"); + pr_notice("CELL: %s err=%d\n", cell->name, cell->error); + pr_notice("DNS: src=%u st=%u lc=%x\n", + cell->dns_source, cell->dns_status, cell->dns_lookup_count); pr_notice("VC: ut=%lx ix=%u ni=%hu fl=%hx err=%hd\n", vc->untried, vc->index, vc->nr_iterations, vc->flags, vc->error); |