aboutsummaryrefslogtreecommitdiffstats
path: root/fs/cifs/cifsfs.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/cifs/cifsfs.c')
-rw-r--r--fs/cifs/cifsfs.c87
1 files changed, 82 insertions, 5 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index cbc0f4bca0c0..c48ca13673e3 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -507,6 +507,8 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
seq_printf(s, ",rsize=%u", cifs_sb->rsize);
seq_printf(s, ",wsize=%u", cifs_sb->wsize);
+ seq_printf(s, ",echo_interval=%lu",
+ tcon->ses->server->echo_interval / HZ);
/* convert actimeo and display it in seconds */
seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ);
@@ -640,9 +642,9 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
while (*s && *s != sep)
s++;
- mutex_lock(&dir->i_mutex);
+ inode_lock(dir);
child = lookup_one_len(p, dentry, s - p);
- mutex_unlock(&dir->i_mutex);
+ inode_unlock(dir);
dput(dentry);
dentry = child;
} while (!IS_ERR(dentry));
@@ -752,6 +754,9 @@ cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter)
ssize_t rc;
struct inode *inode = file_inode(iocb->ki_filp);
+ if (iocb->ki_filp->f_flags & O_DIRECT)
+ return cifs_user_readv(iocb, iter);
+
rc = cifs_revalidate_mapping(inode);
if (rc)
return rc;
@@ -766,6 +771,18 @@ static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
ssize_t written;
int rc;
+ if (iocb->ki_filp->f_flags & O_DIRECT) {
+ written = cifs_user_writev(iocb, from);
+ if (written > 0 && CIFS_CACHE_READ(cinode)) {
+ cifs_zap_mapping(inode);
+ cifs_dbg(FYI,
+ "Set no oplock for inode=%p after a write operation\n",
+ inode);
+ cinode->oplock = 0;
+ }
+ return written;
+ }
+
written = cifs_get_writer(cinode);
if (written)
return written;
@@ -900,8 +917,7 @@ const struct inode_operations cifs_file_inode_ops = {
const struct inode_operations cifs_symlink_inode_ops = {
.readlink = generic_readlink,
- .follow_link = cifs_follow_link,
- .put_link = kfree_put_link,
+ .get_link = cifs_get_link,
.permission = cifs_permission,
/* BB add the following two eventually */
/* revalidate: cifs_revalidate,
@@ -914,6 +930,59 @@ const struct inode_operations cifs_symlink_inode_ops = {
#endif
};
+static int cifs_clone_file_range(struct file *src_file, loff_t off,
+ struct file *dst_file, loff_t destoff, u64 len)
+{
+ struct inode *src_inode = file_inode(src_file);
+ struct inode *target_inode = file_inode(dst_file);
+ struct cifsFileInfo *smb_file_src = src_file->private_data;
+ struct cifsFileInfo *smb_file_target = dst_file->private_data;
+ struct cifs_tcon *target_tcon = tlink_tcon(smb_file_target->tlink);
+ unsigned int xid;
+ int rc;
+
+ cifs_dbg(FYI, "clone range\n");
+
+ xid = get_xid();
+
+ if (!src_file->private_data || !dst_file->private_data) {
+ rc = -EBADF;
+ cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
+ goto out;
+ }
+
+ /*
+ * Note: cifs case is easier than btrfs since server responsible for
+ * checks for proper open modes and file type and if it wants
+ * server could even support copy of range where source = target
+ */
+ lock_two_nondirectories(target_inode, src_inode);
+
+ if (len == 0)
+ len = src_inode->i_size - off;
+
+ cifs_dbg(FYI, "about to flush pages\n");
+ /* should we flush first and last page first */
+ truncate_inode_pages_range(&target_inode->i_data, destoff,
+ PAGE_CACHE_ALIGN(destoff + len)-1);
+
+ if (target_tcon->ses->server->ops->duplicate_extents)
+ rc = target_tcon->ses->server->ops->duplicate_extents(xid,
+ smb_file_src, smb_file_target, off, len, destoff);
+ else
+ rc = -EOPNOTSUPP;
+
+ /* force revalidate of size and timestamps of target file now
+ that target is updated on the server */
+ CIFS_I(target_inode)->time = 0;
+ /* although unlocking in the reverse order from locking is not
+ strictly necessary here it is a little cleaner to be consistent */
+ unlock_two_nondirectories(src_inode, target_inode);
+out:
+ free_xid(xid);
+ return rc;
+}
+
const struct file_operations cifs_file_ops = {
.read_iter = cifs_loose_read_iter,
.write_iter = cifs_file_write_iter,
@@ -926,6 +995,7 @@ const struct file_operations cifs_file_ops = {
.splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
@@ -942,6 +1012,8 @@ const struct file_operations cifs_file_strict_ops = {
.splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
+ .clone_file_range = cifs_clone_file_range,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
@@ -958,6 +1030,7 @@ const struct file_operations cifs_file_direct_ops = {
.mmap = cifs_file_mmap,
.splice_read = generic_file_splice_read,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.llseek = cifs_llseek,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
@@ -974,6 +1047,7 @@ const struct file_operations cifs_file_nobrl_ops = {
.splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
@@ -989,6 +1063,7 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
.splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
@@ -1004,6 +1079,7 @@ const struct file_operations cifs_file_direct_nobrl_ops = {
.mmap = cifs_file_mmap,
.splice_read = generic_file_splice_read,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.llseek = cifs_llseek,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
@@ -1014,6 +1090,7 @@ const struct file_operations cifs_dir_ops = {
.release = cifs_closedir,
.read = generic_read_dir,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.llseek = generic_file_llseek,
};
@@ -1032,7 +1109,7 @@ cifs_init_inodecache(void)
cifs_inode_cachep = kmem_cache_create("cifs_inode_cache",
sizeof(struct cifsInodeInfo),
0, (SLAB_RECLAIM_ACCOUNT|
- SLAB_MEM_SPREAD),
+ SLAB_MEM_SPREAD|SLAB_ACCOUNT),
cifs_init_once);
if (cifs_inode_cachep == NULL)
return -ENOMEM;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.