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| author | Steve French <stfrench@microsoft.com> | 2018-10-20 00:14:32 +0200 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2018-10-24 04:16:06 +0200 |
| commit | fae8044c03c3c03e06b384a6122b78a6c3a0b6a7 (patch) | |
| tree | 555b3632da5b6e5e529fa14ebbc7740b4a5a98f3 /fs/cifs/smb2pdu.c | |
| parent | cifs: add support for ioctl on directories (diff) | |
| download | linux-fae8044c03c3c03e06b384a6122b78a6c3a0b6a7.tar.xz linux-fae8044c03c3c03e06b384a6122b78a6c3a0b6a7.zip | |
smb3: show number of current open files in /proc/fs/cifs/Stats
To allow better debugging (for example applications with
handle leaks, or complex reconnect scenarios) display the
number of open files (on the client) and number of open
server file handles for each tcon in /proc/fs/cifs/Stats.
Note that open files on server is one larger than local
due to handle caching (in this case of the root of
the share). In this example there are two local
open files, and three (two file and one directory handle)
open on the server.
Sample output:
$ cat /proc/fs/cifs/Stats
Resources in use
CIFS Session: 1
Share (unique mount targets): 2
SMB Request/Response Buffer: 1 Pool size: 5
SMB Small Req/Resp Buffer: 1 Pool size: 30
Operations (MIDs): 0
0 session 0 share reconnects
Total vfs operations: 36 maximum at one time: 2
1) \\localhost\test
SMBs: 69
Bytes read: 27 Bytes written: 0
Open files: 2 total (local), 3 open on server
TreeConnects: 1 total 0 failed
TreeDisconnects: 0 total 0 failed
Creates: 19 total 0 failed
Closes: 16 total 0 failed
...
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/smb2pdu.c')
| -rw-r--r-- | fs/cifs/smb2pdu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 1310bb355e32..5a08c8f6a322 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1478,7 +1478,7 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, /* SMB2 TREE_CONNECT request must be called with TreeId == 0 */ tcon->tid = 0; - + atomic_set(&tcon->num_remote_opens, 0); rc = smb2_plain_req_init(SMB2_TREE_CONNECT, tcon, (void **) &req, &total_len); if (rc) { @@ -2303,6 +2303,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, ses->Suid, oparms->create_options, oparms->desired_access); + atomic_inc(&tcon->num_remote_opens); oparms->fid->persistent_fid = rsp->PersistentFileId; oparms->fid->volatile_fid = rsp->VolatileFileId; @@ -2577,6 +2578,8 @@ SMB2_close_flags(const unsigned int xid, struct cifs_tcon *tcon, goto close_exit; } + atomic_dec(&tcon->num_remote_opens); + /* BB FIXME - decode close response, update inode for caching */ close_exit: |