Gao Xiang 0852b6ca94 erofs: fix 1 lcluster-sized pcluster for big pcluster ... If the 1st NONHEAD lcluster of a pcluster isn't CBLKCNT lcluster type rather than a HEAD or PLAIN type instead, which means its pclustersize _must_ be 1 lcluster (since its uncompressed size < 2 lclusters), as illustrated below: HEAD HEAD / PLAIN lcluster type ____________ ____________ |_:__________|_________:__| file data (uncompressed) . . .____________. |____________| pcluster data (compressed) Such on-disk case was explained before [1] but missed to be handled properly in the runtime implementation. It can be observed if manually generating 1 lcluster-sized pcluster with 2 lclusters (thus CBLKCNT doesn't exist.) Let's fix it now. [1] https://lore.kernel.org/r/20210407043927.10623-1-xiang@kernel.org Link: https://lore.kernel.org/r/20210510064715.29123-1-xiang@kernel.org Fixes: cec6e93bea ("erofs: support parsing big pcluster compress indexes") Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <xiang@kernel.org>		2021-05-13 15:58:46 +08:00
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compress.h	erofs: force inplace I/O under low memory scenario	2020-12-09 20:42:02 +08:00
data.c	erofs: don't use erofs_map_blocks() any more	2021-03-29 10:19:53 +08:00
decompressor.c	erofs: support decompress big pcluster for lz4 backend	2021-04-10 03:20:19 +08:00
dir.c	erofs: Replace HTTP links with HTTPS ones	2020-08-03 21:04:29 +08:00
erofs_fs.h	erofs: enable big pcluster feature	2021-04-10 03:20:19 +08:00
inode.c	erofs: add unsupported inode i_format check	2021-03-29 10:20:45 +08:00
internal.h	erofs: support decompress big pcluster for lz4 backend	2021-04-10 03:20:19 +08:00
Kconfig	erofs: introduce physical cluster slab pools	2021-04-10 03:20:16 +08:00
Makefile	erofs: introduce multipage per-CPU buffers	2021-04-10 03:19:59 +08:00
namei.c	erofs: use %pd instead of messing with ->d_name	2021-01-06 19:39:37 -05:00
pcpubuf.c	erofs: introduce multipage per-CPU buffers	2021-04-10 03:19:59 +08:00
super.c	erofs: introduce multipage per-CPU buffers	2021-04-10 03:19:59 +08:00
tagptr.h	erofs: move erofs out of staging	2019-08-24 14:20:10 +02:00
utils.c	erofs: introduce multipage per-CPU buffers	2021-04-10 03:19:59 +08:00
xattr.c	erofs: initialized fields can only be observed after bit is set	2021-02-11 11:55:28 +08:00
xattr.h	erofs: Replace HTTP links with HTTPS ones	2020-08-03 21:04:29 +08:00
zdata.c	erofs: fix up inplace I/O pointer for big pcluster	2021-04-10 03:20:16 +08:00
zdata.h	erofs: introduce physical cluster slab pools	2021-04-10 03:20:16 +08:00
zmap.c	erofs: fix 1 lcluster-sized pcluster for big pcluster	2021-05-13 15:58:46 +08:00
zpvec.h	erofs: Replace HTTP links with HTTPS ones	2020-08-03 21:04:29 +08:00