#include <linux/pagevec.h>
#include <linux/blkdev.h>
#include <linux/bio.h>
+#include <linux/swap.h>
#include <linux/prefetch.h>
#include <linux/uio.h>
#include <linux/cleancache.h>
static enum count_type __read_io_type(struct page *page)
{
- struct address_space *mapping = page->mapping;
+ struct address_space *mapping = page_file_mapping(page);
if (mapping) {
struct inode *inode = mapping->host;
io->bio = NULL;
}
-static bool __has_merged_page(struct f2fs_bio_info *io, struct inode *inode,
+static bool __has_merged_page(struct bio *bio, struct inode *inode,
struct page *page, nid_t ino)
{
struct bio_vec *bvec;
struct page *target;
struct bvec_iter_all iter_all;
- if (!io->bio)
+ if (!bio)
return false;
if (!inode && !page && !ino)
return true;
- bio_for_each_segment_all(bvec, io->bio, iter_all) {
+ bio_for_each_segment_all(bvec, bio, iter_all) {
target = bvec->bv_page;
if (fscrypt_is_bounce_page(target))
struct f2fs_bio_info *io = sbi->write_io[btype] + temp;
down_read(&io->io_rwsem);
- ret = __has_merged_page(io, inode, page, ino);
+ ret = __has_merged_page(io->bio, inode, page, ino);
up_read(&io->io_rwsem);
}
if (ret)
if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
fio->is_por ? META_POR : (__is_meta_io(fio) ?
META_GENERIC : DATA_GENERIC_ENHANCE)))
- return -EFAULT;
+ return -EFSCORRUPTED;
trace_f2fs_submit_page_bio(page, fio);
f2fs_trace_ios(fio, 0);
return 0;
}
+int f2fs_merge_page_bio(struct f2fs_io_info *fio)
+{
+ struct bio *bio = *fio->bio;
+ struct page *page = fio->encrypted_page ?
+ fio->encrypted_page : fio->page;
+
+ if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
+ __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC))
+ return -EFSCORRUPTED;
+
+ trace_f2fs_submit_page_bio(page, fio);
+ f2fs_trace_ios(fio, 0);
+
+ if (bio && (*fio->last_block + 1 != fio->new_blkaddr ||
+ !__same_bdev(fio->sbi, fio->new_blkaddr, bio))) {
+ __submit_bio(fio->sbi, bio, fio->type);
+ bio = NULL;
+ }
+alloc_new:
+ if (!bio) {
+ bio = __bio_alloc(fio->sbi, fio->new_blkaddr, fio->io_wbc,
+ BIO_MAX_PAGES, false, fio->type, fio->temp);
+ bio_set_op_attrs(bio, fio->op, fio->op_flags);
+ }
+
+ if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
+ __submit_bio(fio->sbi, bio, fio->type);
+ bio = NULL;
+ goto alloc_new;
+ }
+
+ if (fio->io_wbc)
+ wbc_account_io(fio->io_wbc, page, PAGE_SIZE);
+
+ inc_page_count(fio->sbi, WB_DATA_TYPE(page));
+
+ *fio->last_block = fio->new_blkaddr;
+ *fio->bio = bio;
+
+ return 0;
+}
+
+static void f2fs_submit_ipu_bio(struct f2fs_sb_info *sbi, struct bio **bio,
+ struct page *page)
+{
+ if (!bio)
+ return;
+
+ if (!__has_merged_page(*bio, NULL, page, 0))
+ return;
+
+ __submit_bio(sbi, *bio, DATA);
+ *bio = NULL;
+}
+
void f2fs_submit_page_write(struct f2fs_io_info *fio)
{
struct f2fs_sb_info *sbi = fio->sbi;
dn.data_blkaddr = ei.blk + index - ei.fofs;
if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr,
DATA_GENERIC_ENHANCE_READ)) {
- err = -EFAULT;
+ err = -EFSCORRUPTED;
goto put_err;
}
goto got_it;
!f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
dn.data_blkaddr,
DATA_GENERIC_ENHANCE)) {
- err = -EFAULT;
+ err = -EFSCORRUPTED;
goto put_err;
}
got_it:
if (__is_valid_data_blkaddr(blkaddr) &&
!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) {
- err = -EFAULT;
+ err = -EFSCORRUPTED;
goto sync_out;
}
sector_t block_nr;
int ret = 0;
- block_in_file = (sector_t)page->index;
+ block_in_file = (sector_t)page_index(page);
last_block = block_in_file + nr_pages;
last_block_in_file = (i_size_read(inode) + blocksize - 1) >>
blkbits;
block_nr = map->m_pblk + block_in_file - map->m_lblk;
SetPageMappedToDisk(page);
- if (!PageUptodate(page) && !cleancache_get_page(page)) {
+ if (!PageUptodate(page) && (!PageSwapCache(page) &&
+ !cleancache_get_page(page))) {
SetPageUptodate(page);
goto confused;
}
if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr,
DATA_GENERIC_ENHANCE_READ)) {
- ret = -EFAULT;
+ ret = -EFSCORRUPTED;
goto out;
}
} else {
prefetchw(&page->flags);
list_del(&page->lru);
if (add_to_page_cache_lru(page, mapping,
- page->index,
+ page_index(page),
readahead_gfp_mask(mapping)))
goto next_page;
}
static int f2fs_read_data_page(struct file *file, struct page *page)
{
- struct inode *inode = page->mapping->host;
+ struct inode *inode = page_file_mapping(page)->host;
int ret = -EAGAIN;
trace_f2fs_readpage(page, DATA);
if (f2fs_has_inline_data(inode))
ret = f2fs_read_inline_data(inode, page);
if (ret == -EAGAIN)
- ret = f2fs_mpage_readpages(page->mapping, NULL, page, 1, false);
+ ret = f2fs_mpage_readpages(page_file_mapping(page),
+ NULL, page, 1, false);
return ret;
}
if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
DATA_GENERIC_ENHANCE))
- return -EFAULT;
+ return -EFSCORRUPTED;
ipu_force = true;
fio->need_lock = LOCK_DONE;
if (__is_valid_data_blkaddr(fio->old_blkaddr) &&
!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
DATA_GENERIC_ENHANCE)) {
- err = -EFAULT;
+ err = -EFSCORRUPTED;
goto out_writepage;
}
/*
}
static int __write_data_page(struct page *page, bool *submitted,
+ struct bio **bio,
+ sector_t *last_block,
struct writeback_control *wbc,
enum iostat_type io_type)
{
.need_lock = LOCK_RETRY,
.io_type = io_type,
.io_wbc = wbc,
+ .bio = bio,
+ .last_block = last_block,
};
trace_f2fs_writepage(page, DATA);
unlock_page(page);
if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) &&
- !F2FS_I(inode)->cp_task)
+ !F2FS_I(inode)->cp_task) {
+ f2fs_submit_ipu_bio(sbi, bio, page);
f2fs_balance_fs(sbi, need_balance_fs);
+ }
if (unlikely(f2fs_cp_error(sbi))) {
+ f2fs_submit_ipu_bio(sbi, bio, page);
f2fs_submit_merged_write(sbi, DATA);
submitted = NULL;
}
static int f2fs_write_data_page(struct page *page,
struct writeback_control *wbc)
{
- return __write_data_page(page, NULL, wbc, FS_DATA_IO);
+ return __write_data_page(page, NULL, NULL, NULL, wbc, FS_DATA_IO);
}
/*
int done = 0;
struct pagevec pvec;
struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
+ struct bio *bio = NULL;
+ sector_t last_block;
int nr_pages;
pgoff_t uninitialized_var(writeback_index);
pgoff_t index;
}
if (PageWriteback(page)) {
- if (wbc->sync_mode != WB_SYNC_NONE)
+ if (wbc->sync_mode != WB_SYNC_NONE) {
f2fs_wait_on_page_writeback(page,
DATA, true, true);
- else
+ f2fs_submit_ipu_bio(sbi, &bio, page);
+ } else {
goto continue_unlock;
+ }
}
if (!clear_page_dirty_for_io(page))
goto continue_unlock;
- ret = __write_data_page(page, &submitted, wbc, io_type);
+ ret = __write_data_page(page, &submitted, &bio,
+ &last_block, wbc, io_type);
if (unlikely(ret)) {
/*
* keep nr_to_write, since vfs uses this to
if (nwritten)
f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host,
NULL, 0, DATA);
+ /* submit cached bio of IPU write */
+ if (bio)
+ __submit_bio(sbi, bio, DATA);
return ret;
}
return false;
if (IS_NOQUOTA(inode))
return false;
+ /* to avoid deadlock in path of data flush */
+ if (F2FS_I(inode)->cp_task)
+ return false;
if (wbc->sync_mode != WB_SYNC_ALL)
return true;
if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks)
} else {
if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
DATA_GENERIC_ENHANCE_READ)) {
- err = -EFAULT;
+ err = -EFSCORRUPTED;
goto fail;
}
err = f2fs_submit_page_read(inode, page, blkaddr);
static int f2fs_set_data_page_dirty(struct page *page)
{
- struct address_space *mapping = page->mapping;
- struct inode *inode = mapping->host;
+ struct inode *inode = page_file_mapping(page)->host;
trace_f2fs_set_page_dirty(page, DATA);
if (!PageUptodate(page))
SetPageUptodate(page);
+ if (PageSwapCache(page))
+ return __set_page_dirty_nobuffers(page);
if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) {
if (!IS_ATOMIC_WRITTEN_PAGE(page)) {
}
#endif
+#ifdef CONFIG_SWAP
+/* Copied from generic_swapfile_activate() to check any holes */
+static int check_swap_activate(struct file *swap_file, unsigned int max)
+{
+ struct address_space *mapping = swap_file->f_mapping;
+ struct inode *inode = mapping->host;
+ unsigned blocks_per_page;
+ unsigned long page_no;
+ unsigned blkbits;
+ sector_t probe_block;
+ sector_t last_block;
+ sector_t lowest_block = -1;
+ sector_t highest_block = 0;
+
+ blkbits = inode->i_blkbits;
+ blocks_per_page = PAGE_SIZE >> blkbits;
+
+ /*
+ * Map all the blocks into the extent list. This code doesn't try
+ * to be very smart.
+ */
+ probe_block = 0;
+ page_no = 0;
+ last_block = i_size_read(inode) >> blkbits;
+ while ((probe_block + blocks_per_page) <= last_block && page_no < max) {
+ unsigned block_in_page;
+ sector_t first_block;
+
+ cond_resched();
+
+ first_block = bmap(inode, probe_block);
+ if (first_block == 0)
+ goto bad_bmap;
+
+ /*
+ * It must be PAGE_SIZE aligned on-disk
+ */
+ if (first_block & (blocks_per_page - 1)) {
+ probe_block++;
+ goto reprobe;
+ }
+
+ for (block_in_page = 1; block_in_page < blocks_per_page;
+ block_in_page++) {
+ sector_t block;
+
+ block = bmap(inode, probe_block + block_in_page);
+ if (block == 0)
+ goto bad_bmap;
+ if (block != first_block + block_in_page) {
+ /* Discontiguity */
+ probe_block++;
+ goto reprobe;
+ }
+ }
+
+ first_block >>= (PAGE_SHIFT - blkbits);
+ if (page_no) { /* exclude the header page */
+ if (first_block < lowest_block)
+ lowest_block = first_block;
+ if (first_block > highest_block)
+ highest_block = first_block;
+ }
+
+ page_no++;
+ probe_block += blocks_per_page;
+reprobe:
+ continue;
+ }
+ return 0;
+
+bad_bmap:
+ pr_err("swapon: swapfile has holes\n");
+ return -EINVAL;
+}
+
+static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
+ sector_t *span)
+{
+ struct inode *inode = file_inode(file);
+ int ret;
+
+ if (!S_ISREG(inode->i_mode))
+ return -EINVAL;
+
+ if (f2fs_readonly(F2FS_I_SB(inode)->sb))
+ return -EROFS;
+
+ ret = f2fs_convert_inline_inode(inode);
+ if (ret)
+ return ret;
+
+ ret = check_swap_activate(file, sis->max);
+ if (ret)
+ return ret;
+
+ set_inode_flag(inode, FI_PIN_FILE);
+ f2fs_precache_extents(inode);
+ f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
+ return 0;
+}
+
+static void f2fs_swap_deactivate(struct file *file)
+{
+ struct inode *inode = file_inode(file);
+
+ clear_inode_flag(inode, FI_PIN_FILE);
+}
+#else
+static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
+ sector_t *span)
+{
+ return -EOPNOTSUPP;
+}
+
+static void f2fs_swap_deactivate(struct file *file)
+{
+}
+#endif
+
const struct address_space_operations f2fs_dblock_aops = {
.readpage = f2fs_read_data_page,
.readpages = f2fs_read_data_pages,
.releasepage = f2fs_release_page,
.direct_IO = f2fs_direct_IO,
.bmap = f2fs_bmap,
+ .swap_activate = f2fs_swap_activate,
+ .swap_deactivate = f2fs_swap_deactivate,
#ifdef CONFIG_MIGRATION
.migratepage = f2fs_migrate_page,
#endif
projects / linux-block.git / blobdiff