ext4_should_retry_alloc(9)

💅 NAME 💅

ext4_should_retry_alloc — bestie, this is the little function that checks whether a block allocation deserves a second chance 🎀

(also hi, you're reading the Kernel API Manual, welcome to the group chat ✨)

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🦋 SYNOPSIS 🦋

int ext4_should_retry_alloc (struct super_block *sb , int *retries );

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🌸 ARGUMENTS 🌸

• sb — the superblock, aka the main character of this whole operation 👑
• retries — the number of retry attempts made so far, like a little counter of how many times we've already been like "okay but what if we tried again" 🙈

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✨ DESCRIPTION ✨

okay so here's the vibe 💖 — ext4_should_retry_alloc gets called when ENOSPC comes back while you're attempting to allocate blocks. ENOSPC is the "no space, bestie, there is literally no space" situation 😭

BUT. If there's an indication that a pending journal transaction might free some space and allow another attempt to succeed, this function will wait for the current or committing transaction to complete and then return TRUE. periodt ✨

so it's giving "don't panic yet, something might free up, hold on a sec" 🫶

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👀 SEE ALSO 👀

Kernel file ./fs/ext4/balloc.c and its whole friend group, fr fr:

• ext4_get_group_desc(9)
• ext4_read_block_bitmap_nowait(9)
• ext4_has_free_clusters(9)
• ext4_count_free_clusters(9)
• ext4_bg_has_super(9)
• ext4_bg_num_gdb(9)
• ext4_inode_to_goal_block(9)

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and that's the page, bestie 💅 this one came from ./fs/ext4 and it's dated October 2026, filed under ext4_should_retry_alloc(9) — slay, go read some more kernel source, iykyk 🧚💜