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Code Issues Releases Wiki Activity

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>
This commit is contained in:
Wu Fengguang 2009-06-16 15:31:20 -07:00 committed by Linus Torvalds
parent 1ebf26a9b3
commit f7e839dd36
4 changed files with 4 additions and 5 deletions
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2
mm/fadvise.c
View File

@ -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;

3
mm/filemap.c
View File

@ -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;
}

3
mm/madvise.c
View File

@ -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;
}

1
mm/readahead.c
View File

@ -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;