diff options
| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-03-18 08:47:11 +0400 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-03-18 11:37:53 +0400 |
| commit | 50c8cdb35ad8016c52fb2326ef9d65542e3a3e1b (patch) | |
| tree | db261148aaa96080b35d61f8b1ac09d1fecb87a4 /fs/f2fs/data.c | |
| parent | d3baf95da5b0bce9fe980eeff6140817d63fabdf (diff) | |
| download | linux-50c8cdb35ad8016c52fb2326ef9d65542e3a3e1b.tar.xz | |
f2fs: introduce nr_pages_to_write for segment alignment
This patch introduces nr_pages_to_write to align page writes to the segment
or other operational unit size, which can be tuned according to the system
environment.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 3bc380942068..b0c923aef229 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -844,8 +844,6 @@ redirty_out: return AOP_WRITEPAGE_ACTIVATE; } -#define MAX_DESIRED_PAGES_WP 4096 - static int __f2fs_writepage(struct page *page, struct writeback_control *wbc, void *data) { @@ -862,7 +860,7 @@ static int f2fs_write_data_pages(struct address_space *mapping, struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); bool locked = false; int ret; - long excess_nrtw = 0, desired_nrtw; + long diff; /* deal with chardevs and other special file */ if (!mapping->a_ops->writepage) @@ -872,11 +870,7 @@ static int f2fs_write_data_pages(struct address_space *mapping, get_dirty_dents(inode) < nr_pages_to_skip(sbi, DATA)) goto skip_write; - if (wbc->nr_to_write < MAX_DESIRED_PAGES_WP) { - desired_nrtw = MAX_DESIRED_PAGES_WP; - excess_nrtw = desired_nrtw - wbc->nr_to_write; - wbc->nr_to_write = desired_nrtw; - } + diff = nr_pages_to_write(sbi, DATA, wbc); if (!S_ISDIR(inode->i_mode)) { mutex_lock(&sbi->writepages); @@ -890,7 +884,7 @@ static int f2fs_write_data_pages(struct address_space *mapping, remove_dirty_dir_inode(inode); - wbc->nr_to_write -= excess_nrtw; + wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); return ret; skip_write: |