diff options
| author |   Bharath SM <bharathsm@microsoft.com> | 2025-09-29 15:57:46 -0500 |
|---|---|---|
| committer |   Steve French <stfrench@microsoft.com> | 2025-10-01 21:49:53 -0500 |
| commit | 63eb8bd6c81d84a23fdc18fffd604e3ea38bb96c (patch) | |
| tree | a9c7c02f27c2e621b34286cea8122284ad27ed08 /fs/smb/client/cifs_debug.c | |
| parent | smb: client: add drop_dir_cache module parameter to invalidate cached dirents (diff) | |
| download | wireguard-linux-63eb8bd6c81d84a23fdc18fffd604e3ea38bb96c.tar.xz wireguard-linux-63eb8bd6c81d84a23fdc18fffd604e3ea38bb96c.zip | |
smb: client: account smb directory cache usage and per-tcon totals
Add lightweight accounting for directory lease cache usage
to aid debugging and limiting cache size in future. Track
per-directory entry/byte counts and maintain per-tcon
aggregates. Also expose the totals in /proc/fs/cifs/open_dirs.
Signed-off-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/smb/client/cifs_debug.c')
| -rw-r--r-- | fs/smb/client/cifs_debug.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/smb/client/cifs_debug.c b/fs/smb/client/cifs_debug.c index 75f5f60f0bb8..1fb71d2d31b5 100644 --- a/fs/smb/client/cifs_debug.c +++ b/fs/smb/client/cifs_debug.c @@ -331,7 +331,10 @@ static int cifs_debug_dirs_proc_show(struct seq_file *m, void *v) if (!cfids) continue; spin_lock(&cfids->cfid_list_lock); /* check lock ordering */ - seq_printf(m, "Num entries: %d\n", cfids->num_entries); + seq_printf(m, "Num entries: %d, cached_dirents: %lu entries, %llu bytes\n", + cfids->num_entries, + (unsigned long)atomic_long_read(&cfids->total_dirents_entries), + (unsigned long long)atomic64_read(&cfids->total_dirents_bytes)); list_for_each_entry(cfid, &cfids->entries, entry) { seq_printf(m, "0x%x 0x%llx 0x%llx %s", tcon->tid, @@ -342,6 +345,9 @@ static int cifs_debug_dirs_proc_show(struct seq_file *m, void *v) seq_printf(m, "\tvalid file info"); if (cfid->dirents.is_valid) seq_printf(m, ", valid dirents"); + if (!list_empty(&cfid->dirents.entries)) + seq_printf(m, ", dirents: %lu entries, %lu bytes", + cfid->dirents.entries_count, cfid->dirents.bytes_used); seq_printf(m, "\n"); } spin_unlock(&cfids->cfid_list_lock); |