new_inode(9)

✨ NAME ✨ — new_inode(9), obtain an inode

okay so welcome to the Kernel API Manual, bestie 💖. this page is literally about new_inode — the function that obtains an inode. yes, that's the whole vibe. no cap. 🎀

🦋 SYNOPSIS 🦋

struct inode * new_inode (struct super_block *sb );

💅 ARGUMENTS 💅

• sb — superblock. that's the one and only argument, bestie 🫶.

🔥 DESCRIPTION 🔥

okay so new_inode allocates a new inode for the given superblock. slay. ✨

the default gfp_mask for allocations related to inode->i_mapping is GFP_HIGHUSER_MOVABLE. that's the default, periodt. 💅

🚨 caveat time, bestie: if HIGHMEM pages are unsuitable, or it is known that pages allocated for the page cache are not reclaimable or migratable, then mapping_set_gfp_mask must be called with suitable flags on the newly created inode's mapping. this is not a drill 😭.

🎀 SEE ALSO 🎀

the kernel file is literally ./fs/inode.c — and here's the whole function fam, no skips:

• inode_init_always_gfp(9)
• alloc_inode(9)
• drop_nlink(9)
• clear_nlink(9)
• set_nlink(9)
• inc_nlink(9)
• inode_sb_list_add(9)
• __insert_inode_hash(9)
• __remove_inode_hash(9)
• evict_inodes(9)
• unlock_new_inode(9)
• lock_two_nondirectories(9)
• unlock_two_nondirectories(9)
• inode_insert5(9)
• iget5_locked(9)
• iget5_locked_rcu(9)
• iget_locked(9)
• iunique(9)
• ihold(9)
• ilookup5_nowait(9)
• ilookup5(9)
• ilookup(9)
• find_inode_nowait(9)
• find_inode_rcu(9)
• find_inode_by_ino_rcu(9)
• iput(9)
• iput_not_last(9)
• bmap(9)
• inode_update_time(9)
• generic_update_time(9)
• atime_needs_update(9)
• file_remove_privs(9)
• current_time(9)
• file_update_time(9)
• file_modified_flags(9)
• file_modified(9)
• kiocb_modified(9)
• inode_init_owner(9)
• inode_owner_or_capable(9)
• inode_dio_wait(9)
• timestamp_truncate(9)
• inode_set_ctime_current(9)
• inode_set_ctime_deleg(9)
• in_group_or_capable(9)
• mode_strip_sgid(9)
• dump_inode(9)

xoxo, your kernel bestie 💖 — source/version: ./fs; date: October 2026; page: new_inode(9). bye bestie! 🫶