diff options
Diffstat (limited to 'fs/smb/client/cifsglob.h')
| -rw-r--r-- | fs/smb/client/cifsglob.h | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h index e6830ab3a546..0fae95cf81c4 100644 --- a/fs/smb/client/cifsglob.h +++ b/fs/smb/client/cifsglob.h @@ -87,7 +87,7 @@ #define SMB_INTERFACE_POLL_INTERVAL 600 /* maximum number of PDUs in one compound */ -#define MAX_COMPOUND 7 +#define MAX_COMPOUND 10 /* * Default number of credits to keep available for SMB3. @@ -1732,6 +1732,7 @@ struct mid_q_entry { int mid_rc; /* rc for MID_RC */ __le16 command; /* smb command code */ unsigned int optype; /* operation type */ + spinlock_t mid_lock; bool wait_cancelled:1; /* Cancelled while waiting for response */ bool deleted_from_q:1; /* Whether Mid has been dequeued frem pending_mid_q */ bool large_buf:1; /* if valid response, is pointer to large buf */ @@ -1881,9 +1882,12 @@ static inline bool is_replayable_error(int error) /* cifs_get_writable_file() flags */ -#define FIND_WR_ANY 0 -#define FIND_WR_FSUID_ONLY 1 -#define FIND_WR_WITH_DELETE 2 +enum cifs_writable_file_flags { + FIND_WR_ANY = 0U, + FIND_WR_FSUID_ONLY = (1U << 0), + FIND_WR_WITH_DELETE = (1U << 1), + FIND_WR_NO_PENDING_DELETE = (1U << 2), +}; #define MID_FREE 0 #define MID_REQUEST_ALLOCATED 1 @@ -2036,6 +2040,9 @@ require use of the stronger protocol */ * cifsFileInfo->file_info_lock cifsFileInfo->count cifs_new_fileinfo * ->invalidHandle initiate_cifs_search * ->oplock_break_cancelled + * mid_q_entry->mid_lock mid_q_entry->callback alloc_mid + * smb2_mid_entry_alloc + * (Any fields of mid_q_entry that will need protection) ****************************************************************************/ #ifdef DECLARE_GLOBALS_HERE @@ -2339,6 +2346,8 @@ struct smb2_compound_vars { struct kvec qi_iov; struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; + struct kvec unlink_iov[SMB2_SET_INFO_IOV_SIZE]; + struct kvec rename_iov[SMB2_SET_INFO_IOV_SIZE]; struct kvec close_iov; struct smb2_file_rename_info_hdr rename_info; struct smb2_file_link_info_hdr link_info; @@ -2375,6 +2384,23 @@ static inline bool cifs_netbios_name(const char *name, size_t namelen) return ret; } +/* + * Execute mid callback atomically - ensures callback runs exactly once + * and prevents sleeping in atomic context. + */ +static inline void mid_execute_callback(struct mid_q_entry *mid) +{ + void (*callback)(struct mid_q_entry *mid); + + spin_lock(&mid->mid_lock); + callback = mid->callback; + mid->callback = NULL; /* Mark as executed, */ + spin_unlock(&mid->mid_lock); + + if (callback) + callback(mid); +} + #define CIFS_REPARSE_SUPPORT(tcon) \ ((tcon)->posix_extensions || \ (le32_to_cpu((tcon)->fsAttrInfo.Attributes) & \ |