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/cached_dir.h | |
| parent | dde6667fa3c8f52ec4b8afd487749e47d032d833 (diff) | |
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/cached_dir.h')
| -rw-r--r-- | fs/smb/client/cached_dir.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/smb/client/cached_dir.h b/fs/smb/client/cached_dir.h index 46b5a2fdf15b..c98f02943311 100644 --- a/fs/smb/client/cached_dir.h +++ b/fs/smb/client/cached_dir.h @@ -27,6 +27,9 @@ struct cached_dirents { struct mutex de_mutex; loff_t pos; /* Expected ctx->pos */ struct list_head entries; + /* accounting for cached entries in this directory */ + unsigned long entries_count; + unsigned long bytes_used; }; struct cached_fid { @@ -62,8 +65,14 @@ struct cached_fids { struct list_head dying; struct work_struct invalidation_work; struct delayed_work laundromat_work; + /* aggregate accounting for all cached dirents under this tcon */ + atomic_long_t total_dirents_entries; + atomic64_t total_dirents_bytes; }; +/* Module-wide directory cache accounting (defined in cifsfs.c) */ +extern atomic64_t cifs_dircache_bytes_used; /* bytes across all mounts */ + extern struct cached_fids *init_cached_dirs(void); extern void free_cached_dirs(struct cached_fids *cfids); extern int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, |