The patch titled
vfs: skip inodes without pages to free in drop_pagecache_sb()
has been added to the -mm tree. Its filename is
vfs-skip-inodes-without-pages-to-free-in-drop_pagecache_sb.patch
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------------------------------------------------------
Subject: vfs: skip inodes without pages to free in drop_pagecache_sb()
From: Jan Kara <jack@xxxxxxx>
Many inodes have no pagecache, so we can avoid lots of lock-takings.
Signed-off-by: Jan Kara <jack@xxxxxxx>
Cc: Fengguang Wu <wfg@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/drop_caches.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN fs/drop_caches.c~vfs-skip-inodes-without-pages-to-free-in-drop_pagecache_sb fs/drop_caches.c
--- a/fs/drop_caches.c~vfs-skip-inodes-without-pages-to-free-in-drop_pagecache_sb
+++ a/fs/drop_caches.c
@@ -20,6 +20,8 @@ static void drop_pagecache_sb(struct sup
list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
if (inode->i_state & (I_FREEING|I_WILL_FREE))
continue;
+ if (inode->i_mapping->nrpages == 0)
+ continue;
__iget(inode);
spin_unlock(&inode_lock);
__invalidate_mapping_pages(inode->i_mapping, 0, -1, true);
_
Patches currently in -mm which might be from jack@xxxxxxx are
git-udf.patch
git-ocfs2.patch
vfs-fix-lock-inversion-in-drop_pagecache_sb.patch
vfs-skip-inodes-without-pages-to-free-in-drop_pagecache_sb.patch
quota-do-not-allow-setting-of-quota-limits-to-too-high-values.patch
quota-remove-superfluous-dquot_off-in-fs-namespacec.patch
quota-various-style-cleanups.patch
quota-various-style-cleanups-checkpatch-fixes.patch
quota-quota-core-changes-for-quotaon-on-remount.patch
quota-quota-core-changes-for-quotaon-on-remount-quota-ext3-make-ext3-handle-quotaon-on-remount.patch
quota-quota-core-changes-for-quotaon-on-remount-quota-ext3-make-ext3-handle-quotaon-on-remount-checkpatch-fixes.patch
quota-quota-core-changes-for-quotaon-on-remount-quota-ext4-make-ext4-handle-quotaon-on-remount.patch
quota-quota-core-changes-for-quotaon-on-remount-quota-ext4-make-ext4-handle-quotaon-on-remount-checkpatch-fixes.patch
quota-quota-core-changes-for-quotaon-on-remount-quota-reiserfs-make-reiserfs-handle-quotaon-on-remount.patch
ext3-fdatasync-should-skip-metadata-writeout-when-overwriting.patch
quota-le_add_cpu-conversion.patch
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