[CIFS] CIFS readdir perf optimizations part 1

Signed-off-by: Steve French <sfrench@us.ibm.com>

3 files changed, 27 insertions, 11 deletions

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index e567f4e6196..0ddd97b1d87 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -3026,6 +3026,7 @@ findFirstRetry:
                                 psrch_inf->unicode = FALSE;
 
                         psrch_inf->ntwrk_buf_start = (char *)pSMBr;
+                        psrch_inf->smallBuf = 0;
                         psrch_inf->srch_entries_start = 
                                 (char *) &pSMBr->hdr.Protocol + 
                                         le16_to_cpu(pSMBr->t2.DataOffset);
@@ -3146,9 +3147,14 @@ int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
                         parms = (T2_FNEXT_RSP_PARMS *)response_data;
                         response_data = (char *)&pSMBr->hdr.Protocol +
                                 le16_to_cpu(pSMBr->t2.DataOffset);
-                        cifs_buf_release(psrch_inf->ntwrk_buf_start);
+                        if(psrch_inf->smallBuf)
+                                cifs_small_buf_release(
+                                        psrch_inf->ntwrk_buf_start);
+                        else
+                                cifs_buf_release(psrch_inf->ntwrk_buf_start);
                         psrch_inf->srch_entries_start = response_data;
                         psrch_inf->ntwrk_buf_start = (char *)pSMB;
+                        psrch_inf->smallBuf = 0;
                         if(parms->EndofSearch)
                                 psrch_inf->endOfSearch = TRUE;
                         else
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 675bd256829..e5bf1ad540d 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -555,7 +555,10 @@ int cifs_closedir(struct inode *inode, struct file *file)
                 if (ptmp) {
                         cFYI(1, ("closedir free smb buf in srch struct"));
                         pCFileStruct->srch_inf.ntwrk_buf_start = NULL;
-                        cifs_buf_release(ptmp);
+                        if(pCFileStruct->srch_inf.smallBuf)
+                                cifs_small_buf_release(ptmp);
+                        else
+                                cifs_buf_release(ptmp);
                 }
                 ptmp = pCFileStruct->search_resume_name;
                 if (ptmp) {
@@ -592,11 +595,11 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
                 pfLock->fl_end));
 
         if (pfLock->fl_flags & FL_POSIX)
-                cFYI(1, ("Posix "));
+                cFYI(1, ("Posix"));
         if (pfLock->fl_flags & FL_FLOCK)
-                cFYI(1, ("Flock "));
+                cFYI(1, ("Flock"));
         if (pfLock->fl_flags & FL_SLEEP) {
-                cFYI(1, ("Blocking lock "));
+                cFYI(1, ("Blocking lock"));
                 wait_flag = TRUE;
         }
         if (pfLock->fl_flags & FL_ACCESS)
@@ -612,21 +615,23 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
                 cFYI(1, ("F_WRLCK "));
                 numLock = 1;
         } else if (pfLock->fl_type == F_UNLCK) {
-                cFYI(1, ("F_UNLCK "));
+                cFYI(1, ("F_UNLCK"));
                 numUnlock = 1;
+                /* Check if unlock includes more than
+                one lock range */
         } else if (pfLock->fl_type == F_RDLCK) {
-                cFYI(1, ("F_RDLCK "));
+                cFYI(1, ("F_RDLCK"));
                 lockType |= LOCKING_ANDX_SHARED_LOCK;
                 numLock = 1;
         } else if (pfLock->fl_type == F_EXLCK) {
-                cFYI(1, ("F_EXLCK "));
+                cFYI(1, ("F_EXLCK"));
                 numLock = 1;
         } else if (pfLock->fl_type == F_SHLCK) {
-                cFYI(1, ("F_SHLCK "));
+                cFYI(1, ("F_SHLCK"));
                 lockType |= LOCKING_ANDX_SHARED_LOCK;
                 numLock = 1;
         } else
-                cFYI(1, ("Unknown type of lock "));
+                cFYI(1, ("Unknown type of lock"));
 
         cifs_sb = CIFS_SB(file->f_dentry->d_sb);
         pTcon = cifs_sb->tcon;
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 288cc048d37..405d4b7ec3a 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -604,7 +604,12 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
                 cifsFile->search_resume_name = NULL;
                 if(cifsFile->srch_inf.ntwrk_buf_start) {
                         cFYI(1,("freeing SMB ff cache buf on search rewind"));
-                        cifs_buf_release(cifsFile->srch_inf.ntwrk_buf_start);
+                        if(cifsFile->srch_inf.smallBuf)
+                                cifs_small_buf_release(cifsFile->srch_inf.
+                                                ntwrk_buf_start);
+                        else
+                                cifs_buf_release(cifsFile->srch_inf.
+                                                ntwrk_buf_start);
                 }
                 rc = initiate_cifs_search(xid,file);
                 if(rc) {