log_write_header(9)

💖 NAME 💖

okay so bestie, this is log_write_header(9) from the Kernel API Manual, and it is literally about one thing: get and initialize a journal header buffer. That's the whole vibe. 🎀

✨ SYNOPSIS ✨

void log_write_header (struct gfs2_sbd *sdp , u32 flags );

No cap, that's the exact signature — spaces and all. Keep it cute, keep it correct. 💅

🎀 ARGUMENTS 🎀

• sdp — the GFS2 superblock. That's the argument, and she's got main character energy. 🫶
• flags — the log header flags, including log header origin. All the flag lore lives here. ✨

🦋 RETURN 🦋

The RETURN section says it gives you the initialized log buffer descriptor. The synopsis says void, so both of those details are staying exactly where they are — no editing the source material, bestie. 😭

🌈 SEE ALSO 🌈

Kernel file:

• ./fs/gfs2/log.c

The whole function squad:

• gfs2_struct2blk(9)
• gfs2_remove_from_ail(9)
• gfs2_ail1_start_one(9)
• gfs2_ail1_flush(9)
• gfs2_ail1_start(9)
• gfs2_ail1_empty_one(9)
• gfs2_ail1_empty(9)
• gfs2_log_is_empty(9)
• gfs2_log_release_revokes(9)
• gfs2_log_release(9)
• __gfs2_log_try_reserve(9)
• __gfs2_log_reserve(9)
• gfs2_log_try_reserve(9)
• gfs2_log_reserve(9)
• log_distance(9)
• calc_reserved(9)
• gfs2_flush_revokes(9)
• gfs2_write_log_header(9)
• gfs2_ail_drain(9)
• empty_ail1_list(9)
• gfs2_trans_drain(9)
• __gfs2_log_flush(9)
• gfs2_merge_trans(9)
• gfs2_log_commit(9)
• gfs2_log_shutdown(9)
• gfs2_logd(9)

xoxo, your local kernel bestie 💅 — this page is sourced from ./fs/gfs2, dated October 2026, and it's all about log_write_header(9). byeee! 🫶