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[CIFS] CIFS readdir perf optimizations part 1 

Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2006-02-28 03:45:48 +00:00
parent 4b8f930ff8
commit d47d7c1a85
3 changed files with 27 additions and 11 deletions
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8
fs/cifs/cifssmb.c
View File

@ -3026,6 +3026,7 @@ CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
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

23
fs/cifs/file.c
View File

@ -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;

7
fs/cifs/readdir.c
View File

@ -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) {