return written;
}
+static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
+{
+ /* origin == SEEK_END => we must revalidate the cached file length */
+ if (origin == 2) {
+ int retval = cifs_revalidate(file->f_dentry);
+ if (retval < 0)
+ return (loff_t)retval;
+ }
+ return remote_llseek(file, offset, origin);
+}
+
static struct file_system_type cifs_fs_type = {
.owner = THIS_MODULE,
.name = "cifs",
.flush = cifs_flush,
.mmap = cifs_file_mmap,
.sendfile = generic_file_sendfile,
+ .llseek = cifs_llseek,
#ifdef CONFIG_CIFS_POSIX
.ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
#ifdef CONFIG_CIFS_POSIX
.ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
-
+ .llseek = cifs_llseek,
#ifdef CONFIG_CIFS_EXPERIMENTAL
.dir_notify = cifs_dir_notify,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
.flush = cifs_flush,
.mmap = cifs_file_mmap,
.sendfile = generic_file_sendfile,
+ .llseek = cifs_llseek,
#ifdef CONFIG_CIFS_POSIX
.ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
#ifdef CONFIG_CIFS_POSIX
.ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
-
+ .llseek = cifs_llseek,
#ifdef CONFIG_CIFS_EXPERIMENTAL
.dir_notify = cifs_dir_notify,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
kmem_cache_destroy(cifs_req_cachep);
return -ENOMEM;
}
- /* 256 (MAX_CIFS_HDR_SIZE bytes is enough for most SMB responses and
+ /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and
almost all handle based requests (but not write response, nor is it
sufficient for path based requests). A smaller size would have
been more efficient (compacting multiple slab items on one 4k page)
efficient to alloc 1 per page off the slab compared to 17K (5page)
alloc of large cifs buffers even when page debugging is on */
cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq",
- MAX_CIFS_HDR_SIZE, 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
+ MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
if (cifs_sm_req_cachep == NULL) {
mempool_destroy(cifs_req_poolp);
kmem_cache_destroy(cifs_req_cachep);
DeleteOplockQEntry(oplock_item);
/* can not grab inode sem here since it would
deadlock when oplock received on delete
- since vfs_unlink holds the i_sem across
+ since vfs_unlink holds the i_mutex across
the call */
- /* down(&inode->i_sem);*/
+ /* mutex_lock(&inode->i_mutex);*/
if (S_ISREG(inode->i_mode)) {
rc = filemap_fdatawrite(inode->i_mapping);
if(CIFS_I(inode)->clientCanCacheRead == 0) {
}
} else
rc = 0;
- /* up(&inode->i_sem);*/
+ /* mutex_unlock(&inode->i_mutex);*/
if (rc)
CIFS_I(inode)->write_behind_rc = rc;
cFYI(1,("Oplock flush inode %p rc %d",inode,rc));
atomic_set(&tconInfoReconnectCount, 0);
atomic_set(&bufAllocCount, 0);
+ atomic_set(&smBufAllocCount, 0);
+#ifdef CONFIG_CIFS_STATS2
+ atomic_set(&totBufAllocCount, 0);
+ atomic_set(&totSmBufAllocCount, 0);
+#endif /* CONFIG_CIFS_STATS2 */
+
atomic_set(&midCount, 0);
GlobalCurrentXid = 0;
GlobalTotalActiveXid = 0;
if (file->f_dentry->d_inode->i_mapping) {
/* BB no need to lock inode until after invalidate
since namei code should already have it locked? */
- filemap_fdatawrite(file->f_dentry->d_inode->i_mapping);
- filemap_fdatawait(file->f_dentry->d_inode->i_mapping);
+ filemap_write_and_wait(file->f_dentry->d_inode->i_mapping);
}
cFYI(1, ("invalidating remote inode since open detected it "
"changed"));
pCifsInode = CIFS_I(inode);
if (pCifsInode) {
if (can_flush) {
- filemap_fdatawrite(inode->i_mapping);
- filemap_fdatawait(inode->i_mapping);
+ filemap_write_and_wait(inode->i_mapping);
/* temporarily disable caching while we
go to server to get inode info */
pCifsInode->clientCanCacheAll = FALSE;
}
ptmp = pCFileStruct->srch_inf.ntwrk_buf_start;
if (ptmp) {
- /* BB removeme BB */ cFYI(1, ("freeing smb buf in srch struct in closedir"));
+ cFYI(1, ("closedir free smb buf in srch struct"));
pCFileStruct->srch_inf.ntwrk_buf_start = NULL;
cifs_buf_release(ptmp);
}
ptmp = pCFileStruct->search_resume_name;
if (ptmp) {
- /* BB removeme BB */ cFYI(1, ("freeing resume name in closedir"));
+ cFYI(1, ("closedir free resume name"));
pCFileStruct->search_resume_name = NULL;
kfree(ptmp);
}
if (rc != 0)
break;
}
-#ifdef CONFIG_CIFS_EXPERIMENTAL
/* BB FIXME We can not sign across two buffers yet */
- if((experimEnabled) && ((pTcon->ses->server->secMode &
- (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0)) {
+ if((pTcon->ses->server->secMode &
+ (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0) {
struct kvec iov[2];
unsigned int len;
iov, 1, long_op);
} else
/* BB FIXME fixup indentation of line below */
-#endif
rc = CIFSSMBWrite(xid, pTcon,
open_file->netfid,
min_t(const int, cifs_sb->wsize,
return rc;
}
-#ifdef CONFIG_CIFS_EXPERIMENTAL
static int cifs_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
return rc;
}
-#endif
static int cifs_writepage(struct page* page, struct writeback_control *wbc)
{
rc = -EAGAIN;
smb_read_data = NULL;
while (rc == -EAGAIN) {
+ int buf_type = CIFS_NO_BUFFER;
if ((open_file->invalidHandle) &&
(!open_file->closePend)) {
rc = cifs_reopen_file(file->f_dentry->d_inode,
break;
}
rc = CIFSSMBRead(xid, pTcon,
- open_file->netfid,
- current_read_size, *poffset,
- &bytes_read, &smb_read_data);
+ open_file->netfid,
+ current_read_size, *poffset,
+ &bytes_read, &smb_read_data,
+ &buf_type);
pSMBr = (struct smb_com_read_rsp *)smb_read_data;
if (copy_to_user(current_offset,
smb_read_data + 4 /* RFC1001 hdr */
+ le16_to_cpu(pSMBr->DataOffset),
bytes_read)) {
rc = -EFAULT;
- FreeXid(xid);
- return rc;
- }
+ }
if (smb_read_data) {
- cifs_buf_release(smb_read_data);
+ if(buf_type == CIFS_SMALL_BUFFER)
+ cifs_small_buf_release(smb_read_data);
+ else if(buf_type == CIFS_LARGE_BUFFER)
+ cifs_buf_release(smb_read_data);
smb_read_data = NULL;
}
}
int xid;
char *current_offset;
struct cifsFileInfo *open_file;
+ int buf_type = CIFS_NO_BUFFER;
xid = GetXid();
cifs_sb = CIFS_SB(file->f_dentry->d_sb);
break;
}
rc = CIFSSMBRead(xid, pTcon,
- open_file->netfid,
- current_read_size, *poffset,
- &bytes_read, ¤t_offset);
+ open_file->netfid,
+ current_read_size, *poffset,
+ &bytes_read, ¤t_offset,
+ &buf_type);
}
if (rc || (bytes_read == 0)) {
if (total_read) {
struct smb_com_read_rsp *pSMBr;
struct pagevec lru_pvec;
struct cifsFileInfo *open_file;
+ int buf_type = CIFS_NO_BUFFER;
xid = GetXid();
if (file->private_data == NULL) {
}
rc = CIFSSMBRead(xid, pTcon,
- open_file->netfid,
- read_size, offset,
- &bytes_read, &smb_read_data);
-
+ open_file->netfid,
+ read_size, offset,
+ &bytes_read, &smb_read_data,
+ &buf_type);
/* BB more RC checks ? */
if (rc== -EAGAIN) {
if (smb_read_data) {
- cifs_buf_release(smb_read_data);
+ if(buf_type == CIFS_SMALL_BUFFER)
+ cifs_small_buf_release(smb_read_data);
+ else if(buf_type == CIFS_LARGE_BUFFER)
+ cifs_buf_release(smb_read_data);
smb_read_data = NULL;
}
}
break;
}
if (smb_read_data) {
- cifs_buf_release(smb_read_data);
+ if(buf_type == CIFS_SMALL_BUFFER)
+ cifs_small_buf_release(smb_read_data);
+ else if(buf_type == CIFS_LARGE_BUFFER)
+ cifs_buf_release(smb_read_data);
smb_read_data = NULL;
}
bytes_read = 0;
open_file = find_writable_file(cifsInode);
if(open_file) {
+ struct cifs_sb_info *cifs_sb;
+
/* there is not actually a write pending so let
this handle go free and allow it to
be closable if needed */
atomic_dec(&open_file->wrtPending);
+
+ cifs_sb = CIFS_SB(cifsInode->vfs_inode.i_sb);
+ if ( cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO ) {
+ /* since no page cache to corrupt on directio
+ we can change size safely */
+ return 1;
+ }
+
return 0;
} else
return 1;
.readpage = cifs_readpage,
.readpages = cifs_readpages,
.writepage = cifs_writepage,
-#ifdef CONFIG_CIFS_EXPERIMENTAL
.writepages = cifs_writepages,
-#endif
.prepare_write = cifs_prepare_write,
.commit_write = cifs_commit_write,
.set_page_dirty = __set_page_dirty_nobuffers,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc==0) {
+ int buf_type = CIFS_NO_BUFFER;
/* Read header */
rc = CIFSSMBRead(xid, pTcon,
netfid,
24 /* length */, 0 /* offset */,
- &bytes_read, &pbuf);
+ &bytes_read, &pbuf, &buf_type);
if((rc == 0) && (bytes_read >= 8)) {
if(memcmp("IntxBLK", pbuf, 8) == 0) {
cFYI(1,("Block device"));
} else {
inode->i_mode |= S_IFREG; /* then it is a file */
rc = -EOPNOTSUPP; /* or some unknown SFU type */
- }
+ }
CIFSSMBClose(xid, pTcon, netfid);
}
return rc;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
CIFSSMBUnixSetPerms(xid, pTcon, full_path,
mode,
- (__u64)current->euid,
- (__u64)current->egid,
+ (__u64)current->fsuid,
+ (__u64)current->fsgid,
0 /* dev_t */,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
}
/* can not grab this sem since kernel filesys locking documentation
- indicates i_sem may be taken by the kernel on lookup and rename
- which could deadlock if we grab the i_sem here as well */
- /* down(&direntry->d_inode->i_sem);*/
+ indicates i_mutex may be taken by the kernel on lookup and rename
+ which could deadlock if we grab the i_mutex here as well */
+ /* mutex_lock(&direntry->d_inode->i_mutex);*/
/* need to write out dirty pages here */
if (direntry->d_inode->i_mapping) {
/* do we need to lock inode until after invalidate completes
}
}
}
- /* up(&direntry->d_inode->i_sem); */
+ /* mutex_unlock(&direntry->d_inode->i_mutex); */
kfree(full_path);
FreeXid(xid);
/* BB check if we need to refresh inode from server now ? BB */
/* need to flush data before changing file size on server */
- filemap_fdatawrite(direntry->d_inode->i_mapping);
- filemap_fdatawait(direntry->d_inode->i_mapping);
+ filemap_write_and_wait(direntry->d_inode->i_mapping);
if (attrs->ia_valid & ATTR_SIZE) {
/* To avoid spurious oplock breaks from server, in the case of
projects / linux-drm-fsl-dcu.git / commitdiff