__gfs2_iomap_get(9)

Bestie, welcome to __gfs2_iomap_get(9) in the Kernel API Manual 💖 This is the page about mapping blocks from an inode to disk blocks, and it is lowkey iconic. Let’s go ✨

🌸 NAME 🌸

__gfs2_iomap_get — Map blocks from an inode to disk blocks 💅

🎀 SYNOPSIS 🎀

Okay so the signature is right here, no cap:

       int __gfs2_iomap_get (struct inode *inode , loff_t pos , loff_t length ,
       unsigned flags , struct iomap *iomap , struct metapath *mp );

🦋 ARGUMENTS 🦋

Here’s the cast of characters, bestie:

• inode — The inode 💖
• pos — Starting position in bytes 📍
• length — Length to map, in bytes 📏
• flags — iomap flags 🚩
• iomap — The iomap structure 🗺️
• mp — The metapath 🧚

🌈 RETURN 🌈

It returns errno. That’s the return vibe, periodt 😭

🔥 SEE ALSO 🔥

Kernel file ./fs/gfs2/bmap.c has the whole friend group:

• gfs2_unstuffer_folio(9)
• gfs2_unstuff_dinode(9)
• find_metapath(9)
• metaptr1(9)
• metapointer(9)
• lookup_metapath(9)
• fillup_metapath(9)
• gfs2_extent_length(9)
• gfs2_hole_size(9)
• __gfs2_iomap_alloc(9)
• gfs2_alloc_size(9)
• gfs2_block_map(9)
• gfs2_journaled_truncate(9)
• sweep_bh_for_rgrps(9)
• find_nonnull_ptr(9)
• punch_hole(9)
• do_shrink(9)
• do_grow(9)
• gfs2_setattr_size(9)
• gfs2_free_journal_extents(9)
• gfs2_add_jextent(9)
• gfs2_map_journal_extents(9)
• gfs2_write_alloc_required(9)

That’s the whole page, bestie 🫶 Source/version ./fs/gfs2, date October 2026, title __gfs2_iomap_get(9) — slay and goodbye 💅✨