check_lock_range(9)

check_lock_range(9) — vfs helper for smb byte range file locking 💅

okay so bestie, this is the Kernel API Manual page for check_lock_range(9) — yes, the manual name is right there at the top, folded in all cute instead of copied as a boring header line ✨. It's literally the vfs helper for smb byte range file locking, and it's giving “specific little function with main character energy” 🫶. slay.

🌸 NAME 🌸

check_lock_range — vfs helper for smb byte range file locking 💖

✨ SYNOPSIS ✨

       int check_lock_range (struct file *filp , loff_t start , loff_t end ,
       unsigned char type );

🎀 ARGUMENTS 🎀

• filp — the file to apply the lock to, periodt 👑
• start — lock start byte offset, no cap 📍
• end — lock end byte offset, fr fr 🏁
• type — byte range type read/write, iconic 💅

🔥 RETURN 🔥

0 on success, otherwise error. highkey that's the whole vibe check 😭

🦋 SEE ALSO 🦋

Kernel file ./fs/smb/server/vfs.c is the source-y bestie here, and these are the linked icons 💜:

• ksmbd_vfs_create(9)
• ksmbd_vfs_mkdir(9)
• ksmbd_vfs_read(9)
• ksmbd_vfs_write(9)
• ksmbd_vfs_getattr(9)
• ksmbd_vfs_fsync(9)
• ksmbd_vfs_remove_file(9)
• ksmbd_vfs_link(9)
• ksmbd_vfs_truncate(9)
• ksmbd_vfs_listxattr(9)
• ksmbd_vfs_getxattr(9)
• ksmbd_vfs_setxattr(9)
• ksmbd_vfs_set_fadvise(9)
• ksmbd_vfs_empty_dir(9)
• ksmbd_vfs_lookup_in_dir(9)
• ksmbd_vfs_kern_path(9)
• ksmbd_vfs_kern_path_start_removing(9)
• ksmbd_vfs_init_kstat(9)

mwah 💋 bestie, that's the whole page. source/version: ./fs/smb/server · date: October 2026 🌈