iget5_locked_rcu(9)

🎀 iget5_locked_rcu(9) 🎀

okay bestie, welcome to the Kernel API Manual — this is the page for iget5_locked_rcu(9), and it is literally about obtaining an inode from a mounted file system. no cap. ✨

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💅 NAME 💅

iget5_locked_rcu — obtain an inode from a mounted file system.

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✨ SYNOPSIS ✨

struct inode * iget5_locked_rcu (struct super_block *sb , u64 hashval ,
       int (*test)(struct inode *, void *) , int (*set)(struct inode *, void *)
       , void *data );

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🫶 ARGUMENTS 🫶

• sb — super block of file system. the mount's whole situation, basically. 💖
• hashval — hash value (usually inode number) to get.
• test — callback used for comparisons between inodes.
• set — callback used to initialize a new struct inode.
• data — opaque data pointer to pass to test and set.

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🌸 DESCRIPTION 🌸

This is equivalent to iget5_locked, except the test callback must tolerate the inode not being stable, including being mid-teardown.

bestie, this is the important part: the test callback must tolerate the inode not being stable, including being mid-teardown. like, it can be actively falling apart and your callback still has to handle that energy. 😭💅

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🔥 SEE ALSO 🔥

Kernel file ./fs/inode.c — and the whole friend group is:

• 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)
• new_inode(9)
• unlock_new_inode(9)
• lock_two_nondirectories(9)
• unlock_two_nondirectories(9)
• inode_insert5(9)
• iget5_locked(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)

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mwah 💋 this page came from source ./fs, dated October 2026, and it is literally the iget5_locked_rcu(9) moment. periodt. 🫶🎀🦋