FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-17 22:41:25 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

cifs: take read lock on GlobalSMBSes_lock in is_valid_oplock_break

Browse Source 
...rather than a write lock. It doesn't change the list so a read lock
should be sufficient.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2009-09-12 11:54:29 -04:00 committed by Steve French
parent 495e993745
commit 058daf4f67
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/cifs/misc.c
View File

@ -562,14 +562,14 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
continue; continue;
cifs_stats_inc(&tcon->num_oplock_brks); cifs_stats_inc(&tcon->num_oplock_brks);
write_lock(&GlobalSMBSeslock); read_lock(&GlobalSMBSeslock);
list_for_each(tmp2, &tcon->openFileList) { list_for_each(tmp2, &tcon->openFileList) {
netfile = list_entry(tmp2, struct cifsFileInfo, netfile = list_entry(tmp2, struct cifsFileInfo,
tlist); tlist);
if (pSMB->Fid != netfile->netfid) if (pSMB->Fid != netfile->netfid)
continue; continue;
write_unlock(&GlobalSMBSeslock); read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock); read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("file id match, oplock break")); cFYI(1, ("file id match, oplock break"));
pCifsInode = CIFS_I(netfile->pInode); pCifsInode = CIFS_I(netfile->pInode);
@ -584,7 +584,7 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
return true; return true;
} }
write_unlock(&GlobalSMBSeslock); read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock); read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("No matching file for oplock break")); cFYI(1, ("No matching file for oplock break"));
return true; return true;