diff options
| author | Christoph Hellwig <hch@lst.de> | 2025-10-17 05:45:48 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-10-29 15:54:31 +0100 |
| commit | 90db4d4441f58d433ecf74f7e3bd17e0a553c20c (patch) | |
| tree | 8e436c715c54452cb72e8daee40fdef8887ad46a /include/linux/fs.h | |
| parent | 151d0922bf638a4e4235758d04b31f48bfcbb798 (diff) | |
writeback: allow the file system to override MIN_WRITEBACK_PAGES
The relatively low minimal writeback size of 4MiB means that written back
inodes on rotational media are switched a lot. Besides introducing
additional seeks, this also can lead to extreme file fragmentation on
zoned devices when a lot of files are cached relative to the available
writeback bandwidth.
Add a superblock field that allows the file system to override the
default size.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20251017034611.651385-3-hch@lst.de
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index a5dbfa20f8d7..6bf369095d2e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1583,6 +1583,7 @@ struct super_block { spinlock_t s_inode_wblist_lock; struct list_head s_inodes_wb; /* writeback inodes */ + long s_min_writeback_pages; } __randomize_layout; static inline struct user_namespace *i_user_ns(const struct inode *inode) |