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authorWu Fengguang <fengguang.wu@intel.com>2009-06-16 15:31:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 19:47:28 -0700
commitf7e839dd36fd940b0202cfb7d39b2a1b2dc59b1b (patch)
tree5c99332a62aa8135bd58485e7f3c22634ecdc90c
parent1ebf26a9b338534def47f307c6c8694b6dfc0a79 (diff)
readahead: move max_sane_readahead() calls into force_page_cache_readahead()
Impact: code simplification. Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Ying Han <yinghan@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/fadvise.c2
-rw-r--r--mm/filemap.c3
-rw-r--r--mm/madvise.c3
-rw-r--r--mm/readahead.c1
4 files changed, 4 insertions, 5 deletions
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 54a0f8040afa..e43359214f6f 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -101,7 +101,7 @@ SYSCALL_DEFINE(fadvise64_64)(int fd, loff_t offset, loff_t len, int advice)
ret = force_page_cache_readahead(mapping, file,
start_index,
- max_sane_readahead(nrpages));
+ nrpages);
if (ret > 0)
ret = 0;
break;
diff --git a/mm/filemap.c b/mm/filemap.c
index 1b60f30cebfa..dcef9fd6b92e 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1390,8 +1390,7 @@ do_readahead(struct address_space *mapping, struct file *filp,
if (!mapping || !mapping->a_ops || !mapping->a_ops->readpage)
return -EINVAL;
- force_page_cache_readahead(mapping, filp, index,
- max_sane_readahead(nr));
+ force_page_cache_readahead(mapping, filp, index, nr);
return 0;
}
diff --git a/mm/madvise.c b/mm/madvise.c
index b9ce574827c8..e994dcb479d6 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -123,8 +123,7 @@ static long madvise_willneed(struct vm_area_struct * vma,
end = vma->vm_end;
end = ((end - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
- force_page_cache_readahead(file->f_mapping,
- file, start, max_sane_readahead(end - start));
+ force_page_cache_readahead(file->f_mapping, file, start, end - start);
return 0;
}
diff --git a/mm/readahead.c b/mm/readahead.c
index 133b6d525513..a224182a3a63 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -210,6 +210,7 @@ int force_page_cache_readahead(struct address_space *mapping, struct file *filp,
if (unlikely(!mapping->a_ops->readpage && !mapping->a_ops->readpages))
return -EINVAL;
+ nr_to_read = max_sane_readahead(nr_to_read);
while (nr_to_read) {
int err;