diff options
| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2023-12-04 02:13:10 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2023-12-04 02:19:44 +0800 |
| commit | fdc759f4e3faa7a6bc2c48981c3dde3e40e3dc51 (patch) | |
| tree | b3467cc37de99911a85b888eddd010c530f6c115 | |
| parent | cf1353a2c1e8a6058d46561585aaa808ec1b239a (diff) | |
| download | linux-erofs/non4kblock.tar.gz | |
erofs: enable sub-page compressed block supporterofs/non4kblock
Let's just disable cached decompression and inplace I/Os for partial
pages as a first step in order to enable sub-page block initial
support. In other words, currently it works primarily based on
temporary short-lived pages. Don't expect too much in terms of
performance.
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
| -rw-r--r-- | fs/erofs/inode.c | 6 | ||||
| -rw-r--r-- | fs/erofs/zdata.c | 6 |
2 files changed, 8 insertions, 4 deletions
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index 14a79d3226abf4..3d616dea55dc3d 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -259,8 +259,10 @@ static int erofs_fill_inode(struct inode *inode) if (erofs_inode_is_data_compressed(vi->datalayout)) { #ifdef CONFIG_EROFS_FS_ZIP - if (!erofs_is_fscache_mode(inode->i_sb) && - inode->i_sb->s_blocksize_bits == PAGE_SHIFT) { + if (!erofs_is_fscache_mode(inode->i_sb)) { + DO_ONCE_LITE_IF(inode->i_sb->s_blocksize != PAGE_SIZE, + erofs_info, inode->i_sb, + "EXPERIMENTAL EROFS subpage compressed block support in use. Use at your own risk!"); inode->i_mapping->a_ops = &z_erofs_aops; err = 0; goto out_unlock; diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index d0298946671137..a2c3e87d2f81c3 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -563,6 +563,8 @@ static void z_erofs_bind_cache(struct z_erofs_decompress_frontend *fe) __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN; unsigned int i; + if (i_blocksize(fe->inode) != PAGE_SIZE) + return; if (fe->mode < Z_EROFS_PCLUSTER_FOLLOWED) return; @@ -967,12 +969,12 @@ static int z_erofs_do_read_page(struct z_erofs_decompress_frontend *fe, struct inode *const inode = fe->inode; struct erofs_map_blocks *const map = &fe->map; const loff_t offset = page_offset(page); + const unsigned int bs = i_blocksize(inode); bool tight = true, exclusive; unsigned int cur, end, len, split; int err = 0; z_erofs_onlinepage_init(page); - split = 0; end = PAGE_SIZE; repeat: @@ -1021,7 +1023,7 @@ repeat: * for inplace I/O or bvpage (should be processed in a strict order.) */ tight &= (fe->mode > Z_EROFS_PCLUSTER_FOLLOWED_NOINPLACE); - exclusive = (!cur && ((split <= 1) || tight)); + exclusive = (!cur && ((split <= 1) || (tight && bs == PAGE_SIZE))); if (cur) tight &= (fe->mode >= Z_EROFS_PCLUSTER_FOLLOWED); |