gfs2_setattr_size(9)

🌸 NAME 🌸

gfs2_setattr_size — make a file a given size. This one is from the Kernel API Manual, bestie, and it's literally here to resize a file. 💅

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✨ SYNOPSIS ✨

here's the exact signature, no cap:

int gfs2_setattr_size (struct inode *inode , u64 newsize );

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🎀 ARGUMENTS 🎀

• inode — the inode. yes, that's the whole vibe. 🫶
• newsize — the size to make the file. iconic. ✨

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🦋 DESCRIPTION 🦋

okay so the file size can grow, shrink, or stay the same size. This is called holding i_rwsem and an exclusive glock on the inode in question. that's the whole description, and it ate. 💖

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🔥 RETURN 🔥

errno — that's the return value, periodt. 💀

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👑 SEE ALSO 👑

Kernel file ./fs/gfs2/bmap.c is the main character, and these are the linked faves:

• 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_iomap_get(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_free_journal_extents(9)
• gfs2_add_jextent(9)
• gfs2_map_journal_extents(9)
• gfs2_write_alloc_required(9)

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mwah 💋 — source/version ./fs/gfs2, dated October 2026, page gfs2_setattr_size(9). bestie, that's a wrap. 🎀🦋