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smb: client: show lease state as R/H/W (or NONE) in open_files

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Print the lease/oplock caching state for each open file as a
compact string of letters: R (read), H (handle), W (write).

Signed-off-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Bharath SM 2025-09-02 16:46:03 +05:30 committed by Steve French
parent 998a67b954
commit ac3ad9845b
1 changed files with 28 additions and 5 deletions
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33
fs/smb/client/cifs_debug.c
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@ -240,14 +240,18 @@ static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
struct cifs_ses *ses;
struct cifs_tcon *tcon;
struct cifsFileInfo *cfile;
struct inode *inode;
struct cifsInodeInfo *cinode;
char lease[4];
int n;
seq_puts(m, "# Version:1\n");
seq_puts(m, "# Format:\n");
seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>");
#ifdef CONFIG_CIFS_DEBUG2
seq_printf(m, " <filename> <mid>\n");
seq_puts(m, " <filename> <lease> <mid>\n");
#else
seq_printf(m, " <filename>\n");
seq_puts(m, " <filename> <lease>\n");
#endif /* CIFS_DEBUG2 */
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
@ -267,11 +271,30 @@ static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
cfile->pid,
from_kuid(&init_user_ns, cfile->uid),
cfile->dentry);
/* Append lease/oplock caching state as RHW letters */
inode = d_inode(cfile->dentry);
n = 0;
if (inode) {
cinode = CIFS_I(inode);
if (CIFS_CACHE_READ(cinode))
lease[n++] = 'R';
if (CIFS_CACHE_HANDLE(cinode))
lease[n++] = 'H';
if (CIFS_CACHE_WRITE(cinode))
lease[n++] = 'W';
}
lease[n] = '\0';
seq_puts(m, " ");
if (n)
seq_printf(m, "%s", lease);
else
seq_puts(m, "NONE");
#ifdef CONFIG_CIFS_DEBUG2
seq_printf(m, " %llu\n", cfile->fid.mid);
#else
seq_printf(m, " %llu", cfile->fid.mid);
#endif /* CONFIG_CIFS_DEBUG2 */
seq_printf(m, "\n");
#endif /* CIFS_DEBUG2 */
}
spin_unlock(&tcon->open_file_lock);
}