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cifs: drop the lease for cached directories on rmdir or rename

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When we delete or rename a directory we must also drop any cached lease we have
on the directory.

Fixes: a350d6e73f5e ("cifs: enable caching of directories for which a lease is held")
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Ronnie Sahlberg 2022-10-18 17:39:10 +10:00 committed by Steve French
parent 096bbeec7b
commit 8e77860c62
3 changed files with 27 additions and 0 deletions
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21
fs/cifs/cached_dir.c
View File

@ -340,6 +340,27 @@ smb2_close_cached_fid(struct kref *ref)
free_cached_dir(cfid);
}
void drop_cached_dir_by_name(const unsigned int xid, struct cifs_tcon *tcon,
const char *name, struct cifs_sb_info *cifs_sb)
{
struct cached_fid *cfid = NULL;
int rc;
rc = open_cached_dir(xid, tcon, name, cifs_sb, true, &cfid);
if (rc) {
cifs_dbg(FYI, "no cached dir found for rmdir(%s)\n", name);
return;
}
spin_lock(&cfid->cfids->cfid_list_lock);
if (cfid->has_lease) {
cfid->has_lease = false;
kref_put(&cfid->refcount, smb2_close_cached_fid);
}
spin_unlock(&cfid->cfids->cfid_list_lock);
close_cached_dir(cfid);
}
void close_cached_dir(struct cached_fid *cfid)
{
kref_put(&cfid->refcount, smb2_close_cached_fid);

4
fs/cifs/cached_dir.h
View File

@ -69,6 +69,10 @@ extern int open_cached_dir_by_dentry(struct cifs_tcon *tcon,
struct dentry *dentry,
struct cached_fid **cfid);
extern void close_cached_dir(struct cached_fid *cfid);
extern void drop_cached_dir_by_name(const unsigned int xid,
struct cifs_tcon *tcon,
const char *name,
struct cifs_sb_info *cifs_sb);
extern void close_all_cached_dirs(struct cifs_sb_info *cifs_sb);
extern void invalidate_all_cached_dirs(struct cifs_tcon *tcon);
extern int cached_dir_lease_break(struct cifs_tcon *tcon, __u8 lease_key[16]);

2
fs/cifs/smb2inode.c
View File

@ -655,6 +655,7 @@ int
smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
struct cifs_sb_info *cifs_sb)
{
drop_cached_dir_by_name(xid, tcon, name, cifs_sb);
return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
CREATE_NOT_FILE, ACL_NO_MODE,
NULL, SMB2_OP_RMDIR, NULL, NULL, NULL);
@ -698,6 +699,7 @@ smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
{
struct cifsFileInfo *cfile;
drop_cached_dir_by_name(xid, tcon, from_name, cifs_sb);
cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
return smb2_set_path_attr(xid, tcon, from_name, to_name,