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-rw-r--r--fs/fuse/file.c76
1 files changed, 58 insertions, 18 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 183626868ee..1387749201b 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -141,8 +141,8 @@ int fuse_release_common(struct inode *inode, struct file *file, int isdir)
isdir ? FUSE_RELEASEDIR : FUSE_RELEASE);
/* Hold vfsmount and dentry until release is finished */
- req->vfsmount = mntget(file->f_vfsmnt);
- req->dentry = dget(file->f_dentry);
+ req->vfsmount = mntget(file->f_path.mnt);
+ req->dentry = dget(file->f_path.dentry);
request_send_background(fc, req);
}
@@ -184,7 +184,7 @@ static u64 fuse_lock_owner_id(struct fuse_conn *fc, fl_owner_t id)
static int fuse_flush(struct file *file, fl_owner_t id)
{
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file->f_path.dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_file *ff = file->private_data;
struct fuse_req *req;
@@ -397,14 +397,14 @@ static int fuse_readpages(struct file *file, struct address_space *mapping,
err = -EIO;
if (is_bad_inode(inode))
- goto clean_pages_up;
+ goto out;
data.file = file;
data.inode = inode;
data.req = fuse_get_req(fc);
err = PTR_ERR(data.req);
if (IS_ERR(data.req))
- goto clean_pages_up;
+ goto out;
err = read_cache_pages(mapping, pages, fuse_readpages_fill, &data);
if (!err) {
@@ -413,10 +413,7 @@ static int fuse_readpages(struct file *file, struct address_space *mapping,
else
fuse_put_request(fc, data.req);
}
- return err;
-
-clean_pages_up:
- put_pages_list(pages);
+out:
return err;
}
@@ -481,8 +478,10 @@ static int fuse_commit_write(struct file *file, struct page *page,
err = -EIO;
if (!err) {
pos += count;
- if (pos > i_size_read(inode))
+ spin_lock(&fc->lock);
+ if (pos > inode->i_size)
i_size_write(inode, pos);
+ spin_unlock(&fc->lock);
if (offset == 0 && to == PAGE_CACHE_SIZE) {
clear_page_dirty(page);
@@ -534,7 +533,7 @@ static int fuse_get_user_pages(struct fuse_req *req, const char __user *buf,
static ssize_t fuse_direct_io(struct file *file, const char __user *buf,
size_t count, loff_t *ppos, int write)
{
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file->f_path.dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
size_t nmax = write ? fc->max_write : fc->max_read;
loff_t pos = *ppos;
@@ -586,8 +585,12 @@ static ssize_t fuse_direct_io(struct file *file, const char __user *buf,
}
fuse_put_request(fc, req);
if (res > 0) {
- if (write && pos > i_size_read(inode))
- i_size_write(inode, pos);
+ if (write) {
+ spin_lock(&fc->lock);
+ if (pos > inode->i_size)
+ i_size_write(inode, pos);
+ spin_unlock(&fc->lock);
+ }
*ppos = pos;
}
fuse_invalidate_attr(inode);
@@ -604,7 +607,7 @@ static ssize_t fuse_direct_read(struct file *file, char __user *buf,
static ssize_t fuse_direct_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file->f_path.dentry->d_inode;
ssize_t res;
/* Don't allow parallel writes to the same file */
mutex_lock(&inode->i_mutex);
@@ -659,7 +662,7 @@ static int convert_fuse_file_lock(const struct fuse_file_lock *ffl,
static void fuse_lk_fill(struct fuse_req *req, struct file *file,
const struct file_lock *fl, int opcode, pid_t pid)
{
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file->f_path.dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_file *ff = file->private_data;
struct fuse_lk_in *arg = &req->misc.lk_in;
@@ -679,7 +682,7 @@ static void fuse_lk_fill(struct fuse_req *req, struct file *file,
static int fuse_getlk(struct file *file, struct file_lock *fl)
{
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file->f_path.dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_req *req;
struct fuse_lk_out outarg;
@@ -704,7 +707,7 @@ static int fuse_getlk(struct file *file, struct file_lock *fl)
static int fuse_setlk(struct file *file, struct file_lock *fl)
{
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file->f_path.dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_req *req;
int opcode = (fl->fl_flags & FL_SLEEP) ? FUSE_SETLKW : FUSE_SETLK;
@@ -731,7 +734,7 @@ static int fuse_setlk(struct file *file, struct file_lock *fl)
static int fuse_file_lock(struct file *file, int cmd, struct file_lock *fl)
{
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file->f_path.dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
int err;
@@ -751,6 +754,42 @@ static int fuse_file_lock(struct file *file, int cmd, struct file_lock *fl)
return err;
}
+static sector_t fuse_bmap(struct address_space *mapping, sector_t block)
+{
+ struct inode *inode = mapping->host;
+ struct fuse_conn *fc = get_fuse_conn(inode);
+ struct fuse_req *req;
+ struct fuse_bmap_in inarg;
+ struct fuse_bmap_out outarg;
+ int err;
+
+ if (!inode->i_sb->s_bdev || fc->no_bmap)
+ return 0;
+
+ req = fuse_get_req(fc);
+ if (IS_ERR(req))
+ return 0;
+
+ memset(&inarg, 0, sizeof(inarg));
+ inarg.block = block;
+ inarg.blocksize = inode->i_sb->s_blocksize;
+ req->in.h.opcode = FUSE_BMAP;
+ req->in.h.nodeid = get_node_id(inode);
+ req->in.numargs = 1;
+ req->in.args[0].size = sizeof(inarg);
+ req->in.args[0].value = &inarg;
+ req->out.numargs = 1;
+ req->out.args[0].size = sizeof(outarg);
+ req->out.args[0].value = &outarg;
+ request_send(fc, req);
+ err = req->out.h.error;
+ fuse_put_request(fc, req);
+ if (err == -ENOSYS)
+ fc->no_bmap = 1;
+
+ return err ? 0 : outarg.block;
+}
+
static const struct file_operations fuse_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
@@ -784,6 +823,7 @@ static const struct address_space_operations fuse_file_aops = {
.commit_write = fuse_commit_write,
.readpages = fuse_readpages,
.set_page_dirty = fuse_set_page_dirty,
+ .bmap = fuse_bmap,
};
void fuse_init_file_inode(struct inode *inode)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-25 20:21:42 +0000