xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

enable fallocate punch hole ("fallocate -p") for SMB3

Browse Source 
Implement FALLOC_FL_PUNCH_HOLE (which does not change the file size
fortunately so this matches the behavior of the equivalent SMB3
fsctl call) for SMB3 mounts.  This allows "fallocate -p" to work.
It requires that the server support setting files as sparse
(which Windows allows).

Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Steve French
2014-08-17 08:38:47 -05:00
parent ad3829cf1d
commit 31742c5a33
5 changed files with 73 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
fs/cifs/cifsfs.c
View File

@@ -207,6 +207,19 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
return 0;
}
static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len)
{
struct super_block *sb = file->f_path.dentry->d_sb;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
struct TCP_Server_Info *server = tcon->ses->server;
if (server->ops->fallocate)
return server->ops->fallocate(file, tcon, mode, off, len);
return -EOPNOTSUPP;
}
static int cifs_permission(struct inode *inode, int mask)
{
struct cifs_sb_info *cifs_sb;
@@ -909,6 +922,7 @@ const struct file_operations cifs_file_ops = {
.unlocked_ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
const struct file_operations cifs_file_strict_ops = {
@@ -928,6 +942,7 @@ const struct file_operations cifs_file_strict_ops = {
.unlocked_ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
const struct file_operations cifs_file_direct_ops = {
@@ -948,6 +963,7 @@ const struct file_operations cifs_file_direct_ops = {
#endif /* CONFIG_CIFS_POSIX */
.llseek = cifs_llseek,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
const struct file_operations cifs_file_nobrl_ops = {
@@ -966,6 +982,7 @@ const struct file_operations cifs_file_nobrl_ops = {
.unlocked_ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
const struct file_operations cifs_file_strict_nobrl_ops = {
@@ -984,6 +1001,7 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
.unlocked_ioctl = cifs_ioctl,
#endif /* CONFIG_CIFS_POSIX */
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
const struct file_operations cifs_file_direct_nobrl_ops = {
@@ -1003,6 +1021,7 @@ const struct file_operations cifs_file_direct_nobrl_ops = {
#endif /* CONFIG_CIFS_POSIX */
.llseek = cifs_llseek,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
const struct file_operations cifs_dir_ops = {