diff options
Diffstat (limited to 'mm/readahead.c')
| -rw-r--r-- | mm/readahead.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/readahead.c b/mm/readahead.c index e273f0de3376..9f62b7151100 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -19,6 +19,7 @@ #include <linux/syscalls.h> #include <linux/file.h> #include <linux/mm_inline.h> +#include <linux/blk-cgroup.h> #include "internal.h" @@ -505,6 +506,9 @@ void page_cache_sync_readahead(struct address_space *mapping, if (!ra->ra_pages) return; + if (blk_cgroup_congested()) + return; + /* be dumb */ if (filp && (filp->f_mode & FMODE_RANDOM)) { force_page_cache_readahead(mapping, filp, offset, req_size); @@ -555,6 +559,9 @@ page_cache_async_readahead(struct address_space *mapping, if (inode_read_congested(mapping->host)) return; + if (blk_cgroup_congested()) + return; + /* do read-ahead */ ondemand_readahead(mapping, ra, filp, true, offset, req_size); } |