f2fs_io: let's try to get contigous memory if possible

Jaegeuk Kim · Jaegeuk Kim · commit 1367f7b9c09a · 2025-09-18T05:16:04.000Z
Signed-off-by: Jaegeuk Kim &lt;jaegeuk@kernel.org&gt;
diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
@@ -101,6 +101,10 @@ static void *aligned_xalloc(size_t alignment, size_t size)
 
 	if (!p)
 		die("Memory alloc failed (requested %zu bytes)", size);
+
+	if (madvise(p, size, MADV_HUGEPAGE))
+		die("Madvise failed (requested %zu bytes)", size);
+
 	return p;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -101,6 +101,10 @@ static void *aligned_xalloc(size_t alignment, size_t size)`
`101`	`101`
`102`	`102`	`if (!p)`
`103`	`103`	`die("Memory alloc failed (requested %zu bytes)", size);`
	`104`	`+`
	`105`	`+ if (madvise(p, size, MADV_HUGEPAGE))`
	`106`	`+ die("Madvise failed (requested %zu bytes)", size);`
	`107`	`+`
`104`	`108`	`return p;`
`105`	`109`	`}`
`106`	`110`