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| author | Miklos Szeredi <mszeredi@redhat.com> | 2025-05-13 18:10:08 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-05-15 12:26:05 +0300 |
| commit | e0410e956b97e8b50b2aa7b02ba70e5f09b31ebe (patch) | |
| tree | d5a6a2771ac9b29d2f65e74ecb61e4d0a627f446 /include/linux | |
| parent | e7b9cea718eee4585a947b10086ca51ad27ef5d4 (diff) | |
| download | linux-e0410e956b97e8b50b2aa7b02ba70e5f09b31ebe.tar.xz | |
readdir: supply dir_context.count as readdir buffer size hint
This is a preparation for large readdir buffers in fuse.
Simply setting the fuse buffer size to the userspace buffer size should
work, the record sizes are similar (fuse's is slightly larger than libc's,
so no overflow should ever happen).
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Jaco Kroon <jaco@uls.co.za>
Link: https://lore.kernel.org/20250513151012.1476536-1-mszeredi@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/fs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index c8b5af17060e..ddd54a664916 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2071,6 +2071,13 @@ typedef bool (*filldir_t)(struct dir_context *, const char *, int, loff_t, u64, struct dir_context { filldir_t actor; loff_t pos; + /* + * Filesystems MUST NOT MODIFY count, but may use as a hint: + * 0 unknown + * > 0 space in buffer (assume at least one entry) + * INT_MAX unlimited + */ + int count; }; /* If OR-ed with d_type, pending signals are not checked */ |