diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/data.c | 8 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 28 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 4 |
4 files changed, 34 insertions, 8 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index f4a9eb4..ea58787 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -140,7 +140,7 @@ void f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, io = is_read_io(rw) ? &sbi->read_io : &sbi->write_io[btype]; - mutex_lock(&io->io_mutex); + down_write(&io->io_rwsem); /* change META to META_FLUSH in the checkpoint procedure */ if (type >= META_FLUSH) { @@ -148,7 +148,7 @@ void f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, io->fio.rw = WRITE_FLUSH_FUA | REQ_META | REQ_PRIO; } __submit_merged_bio(io); - mutex_unlock(&io->io_mutex); + up_write(&io->io_rwsem); } /* @@ -186,7 +186,7 @@ void f2fs_submit_page_mbio(struct f2fs_sb_info *sbi, struct page *page, verify_block_addr(sbi, blk_addr); - mutex_lock(&io->io_mutex); + down_write(&io->io_rwsem); if (!is_read) inc_page_count(sbi, F2FS_WRITEBACK); @@ -210,7 +210,7 @@ alloc_new: io->last_block_in_bio = blk_addr; - mutex_unlock(&io->io_mutex); + up_write(&io->io_rwsem); trace_f2fs_submit_page_mbio(page, fio->rw, fio->type, blk_addr); } diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 41f2178..ee4b542 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -394,7 +394,7 @@ struct f2fs_bio_info { struct bio *bio; /* bios to merge */ sector_t last_block_in_bio; /* last block number */ struct f2fs_io_info fio; /* store buffered io info. */ - struct mutex io_mutex; /* mutex for bio */ + struct rw_semaphore io_rwsem; /* blocking op for bio */ }; struct f2fs_sb_info { diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index e7ff23a..570ab9a 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1046,12 +1046,38 @@ void rewrite_node_page(struct f2fs_sb_info *sbi, mutex_unlock(&curseg->curseg_mutex); } +static inline bool is_merged_page(struct f2fs_sb_info *sbi, + struct page *page, enum page_type type) +{ + enum page_type btype = PAGE_TYPE_OF_BIO(type); + struct f2fs_bio_info *io = &sbi->write_io[btype]; + struct bio *bio = io->bio; + struct bio_vec *bvec; + int i; + + down_read(&io->io_rwsem); + if (!bio) + goto out; + + bio_for_each_segment_all(bvec, bio, i) { + if (page == bvec->bv_page) { + up_read(&io->io_rwsem); + return true; + } + } + +out: + up_read(&io->io_rwsem); + return false; +} + void f2fs_wait_on_page_writeback(struct page *page, enum page_type type) { struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); if (PageWriteback(page)) { - f2fs_submit_merged_bio(sbi, type, WRITE); + if (is_merged_page(sbi, page, type)) + f2fs_submit_merged_bio(sbi, type, WRITE); wait_on_page_writeback(page); } } diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index de3692f..fee1f7f 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -902,11 +902,11 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) sbi->por_doing = false; spin_lock_init(&sbi->stat_lock); - mutex_init(&sbi->read_io.io_mutex); + init_rwsem(&sbi->read_io.io_rwsem); sbi->read_io.sbi = sbi; sbi->read_io.bio = NULL; for (i = 0; i < NR_PAGE_TYPE; i++) { - mutex_init(&sbi->write_io[i].io_mutex); + init_rwsem(&sbi->write_io[i].io_rwsem); sbi->write_io[i].sbi = sbi; sbi->write_io[i].bio = NULL; } |