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CIFS: Add cifs_set_oplock_level

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Simplify many places when we need to set oplock level on an inode.

Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Pavel Shilovsky 2010-11-02 12:00:42 +03:00 committed by Steve French
parent ce2f6fb8bd
commit e66673e39a
3 changed files with 30 additions and 32 deletions
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1
fs/cifs/cifsproto.h
View File

@ -104,6 +104,7 @@ extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
extern u64 cifs_UnixTimeToNT(struct timespec);
extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
int offset);
extern void cifs_set_oplock_level(struct inode *inode, __u32 oplock);
extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
struct file *file, struct tcon_link *tlink,

38
fs/cifs/file.c
View File

@ -146,12 +146,7 @@ static inline int cifs_open_inode_helper(struct inode *inode,
rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
xid, NULL);
if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
pCifsInode->clientCanCacheAll = true;
pCifsInode->clientCanCacheRead = true;
cFYI(1, "Exclusive Oplock granted on inode %p", inode);
} else if ((oplock & 0xF) == OPLOCK_READ)
pCifsInode->clientCanCacheRead = true;
cifs_set_oplock_level(inode, oplock);
return rc;
}
@ -253,12 +248,7 @@ cifs_new_fileinfo(__u16 fileHandle, struct file *file,
list_add_tail(&pCifsFile->flist, &pCifsInode->openFileList);
spin_unlock(&cifs_file_list_lock);
if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
pCifsInode->clientCanCacheAll = true;
pCifsInode->clientCanCacheRead = true;
cFYI(1, "Exclusive Oplock inode %p", inode);
} else if ((oplock & 0xF) == OPLOCK_READ)
pCifsInode->clientCanCacheRead = true;
cifs_set_oplock_level(inode, oplock);
file->private_data = pCifsFile;
return pCifsFile;
@ -271,8 +261,10 @@ cifs_new_fileinfo(__u16 fileHandle, struct file *file,
*/
void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
{
struct inode *inode = cifs_file->dentry->d_inode;
struct cifsTconInfo *tcon = tlink_tcon(cifs_file->tlink);
struct cifsInodeInfo *cifsi = CIFS_I(cifs_file->dentry->d_inode);
struct cifsInodeInfo *cifsi = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsLockInfo *li, *tmp;
spin_lock(&cifs_file_list_lock);
@ -288,8 +280,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
if (list_empty(&cifsi->openFileList)) {
cFYI(1, "closing last open instance for inode %p",
cifs_file->dentry->d_inode);
cifsi->clientCanCacheRead = false;
cifsi->clientCanCacheAll = false;
cifs_set_oplock_level(inode, 0);
}
spin_unlock(&cifs_file_list_lock);
@ -607,8 +598,6 @@ static int cifs_reopen_file(struct cifsFileInfo *pCifsFile, bool can_flush)
rc = filemap_write_and_wait(inode->i_mapping);
mapping_set_error(inode->i_mapping, rc);
pCifsInode->clientCanCacheAll = false;
pCifsInode->clientCanCacheRead = false;
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode,
full_path, inode->i_sb, xid);
@ -622,18 +611,9 @@ static int cifs_reopen_file(struct cifsFileInfo *pCifsFile, bool can_flush)
invalidate the current end of file on the server
we can not go to the server to get the new inod
info */
if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
pCifsInode->clientCanCacheAll = true;
pCifsInode->clientCanCacheRead = true;
cFYI(1, "Exclusive Oplock granted on inode %p",
pCifsFile->dentry->d_inode);
} else if ((oplock & 0xF) == OPLOCK_READ) {
pCifsInode->clientCanCacheRead = true;
pCifsInode->clientCanCacheAll = false;
} else {
pCifsInode->clientCanCacheRead = false;
pCifsInode->clientCanCacheAll = false;
}
cifs_set_oplock_level(inode, oplock);
cifs_relock_file(pCifsFile);
reopen_error_exit:

23
fs/cifs/misc.c
View File

@ -569,10 +569,9 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
cFYI(1, "file id match, oplock break");
pCifsInode = CIFS_I(netfile->dentry->d_inode);
pCifsInode->clientCanCacheAll = false;
if (pSMB->OplockLevel == 0)
pCifsInode->clientCanCacheRead = false;
cifs_set_oplock_level(netfile->dentry->d_inode,
pSMB->OplockLevel);
/*
* cifs_oplock_break_put() can't be called
* from here. Get reference after queueing
@ -722,3 +721,21 @@ cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb)
cifs_sb_master_tcon(cifs_sb)->treeName);
}
}
void cifs_set_oplock_level(struct inode *inode, __u32 oplock)
{
struct cifsInodeInfo *cinode = CIFS_I(inode);
if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
cinode->clientCanCacheAll = true;
cinode->clientCanCacheRead = true;
cFYI(1, "Exclusive Oplock granted on inode %p", inode);
} else if ((oplock & 0xF) == OPLOCK_READ) {
cinode->clientCanCacheAll = false;
cinode->clientCanCacheRead = true;
cFYI(1, "Level II Oplock granted on inode %p", inode);
} else {
cinode->clientCanCacheAll = false;
cinode->clientCanCacheRead = false;
}
}