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f2fs: fix incorrect upper bound when iterating inode mapping tree

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1. Inode mapping tree can index page in range of [0, ULONG_MAX], however,
in some places, f2fs only search or iterate page in ragne of [0, LONG_MAX],
result in miss hitting in page cache.

2. filemap_fdatawait_range accepts range parameters in unit of bytes, so
the max range it covers should be [0, LLONG_MAX], if we use [0, LONG_MAX]
as range for waiting on writeback, big number of pages will not be covered.

This patch corrects above two issues.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2016-02-24 17:20:44 +08:00 committed by Jaegeuk Kim
parent 0ff21646f2
commit 80dd9c0e9d
3 changed files with 7 additions and 7 deletions
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8
fs/f2fs/checkpoint.c
View File

@ -282,7 +282,7 @@ long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
long nr_to_write)
{
struct address_space *mapping = META_MAPPING(sbi);
pgoff_t index = 0, end = LONG_MAX, prev = LONG_MAX;
pgoff_t index = 0, end = ULONG_MAX, prev = ULONG_MAX;
struct pagevec pvec;
long nwritten = 0;
struct writeback_control wbc = {
@ -305,7 +305,7 @@ long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
if (prev == LONG_MAX)
if (prev == ULONG_MAX)
prev = page->index - 1;
if (nr_to_write != LONG_MAX && page->index != prev + 1) {
pagevec_release(&pvec);
@ -1077,8 +1077,8 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX);
filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX);
filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LLONG_MAX);
filemap_fdatawait_range(META_MAPPING(sbi), 0, LLONG_MAX);
/* update user_block_counts */
sbi->last_valid_block_count = sbi->total_valid_block_count;

2
fs/f2fs/file.c
View File

@ -301,7 +301,7 @@ static pgoff_t __get_first_dirty_index(struct address_space *mapping,
pagevec_init(&pvec, 0);
nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs,
PAGECACHE_TAG_DIRTY, 1);
pgofs = nr_pages ? pvec.pages[0]->index : LONG_MAX;
pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX;
pagevec_release(&pvec);
return pgofs;
}

4
fs/f2fs/node.c
View File

@ -1238,7 +1238,7 @@ int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
next_step:
index = 0;
end = LONG_MAX;
end = ULONG_MAX;
while (index <= end) {
int i, nr_pages;
@ -1354,7 +1354,7 @@ continue_unlock:
int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
{
pgoff_t index = 0, end = LONG_MAX;
pgoff_t index = 0, end = ULONG_MAX;
struct pagevec pvec;
int ret2 = 0, ret = 0;