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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 16:27:49 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 16:27:49 +0100 |
| commit | d899927728beca8357a5b4120b690cb3c1d80844 (patch) | |
| tree | ccb170439cc8638d71f6120ae08a6faded46db98 /fs/drop_caches.c | |
| parent | 8d60367808c45e33c0a9127621f4e5fc34914f6b (diff) | |
| parent | 0a8ab17689e628c84a666195bfc6ab85d11cf057 (diff) | |
Merge remote-tracking branch 'remotes/fslc/4.9-2.3.x-imx' into toradex_4.9-2.3.x-imx-nextColibri-iMX7_LXDE-Image_2.8b6.184-20190401Colibri-iMX6_LXDE-Image_2.8b6.184-20190401Colibri-iMX6ULL_LXDE-Image_2.8b6.184-20190401Apalis-iMX6_LXDE-Image_2.8b6.184-20190401
Diffstat (limited to 'fs/drop_caches.c')
| -rw-r--r-- | fs/drop_caches.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/drop_caches.c b/fs/drop_caches.c index d72d52b90433..280460fef066 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -20,8 +20,13 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused) spin_lock(&sb->s_inode_list_lock); list_for_each_entry(inode, &sb->s_inodes, i_sb_list) { spin_lock(&inode->i_lock); + /* + * We must skip inodes in unusual state. We may also skip + * inodes without pages but we deliberately won't in case + * we need to reschedule to avoid softlockups. + */ if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) || - (inode->i_mapping->nrpages == 0)) { + (inode->i_mapping->nrpages == 0 && !need_resched())) { spin_unlock(&inode->i_lock); continue; } @@ -29,6 +34,7 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused) spin_unlock(&inode->i_lock); spin_unlock(&sb->s_inode_list_lock); + cond_resched(); invalidate_mapping_pages(inode->i_mapping, 0, -1); iput(toput_inode); toput_inode = inode; |