Hi all - it would be nice to get some review or feedback on this; seems that these patches tend to go stale fairly quickly as f2fs evolves. :)
Thanks, -Eric On 4/23/25 12:08 PM, Eric Sandeen wrote: > V3: > - Rebase onto git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git > dev branch > - Fix up some 0day robot warnings > > This is a forward-port of Hongbo's original f2fs mount API conversion, > posted last August at > https://lore.kernel.org/linux-f2fs-devel/20240814023912.3959299-1-lihongb...@huawei.com/ > > I had been trying to approach this with a little less complexity, > but in the end I realized that Hongbo's approach (which follows > the ext4 approach) was a good one, and I was not making any progrss > myself. 😉 > > In addition to the forward-port, I have also fixed a couple bugs I found > during testing, and some improvements / style choices as well. Hongbo and > I have discussed most of this off-list already, so I'm presenting the > net result here. > > This does pass my typical testing which does a large number of random > mounts/remounts with valid and invalid option sets, on f2fs filesystem > images with various features in the on-disk superblock. (I was not able > to test all of this completely, as some options or features require > hardware I dn't have.) > > Thanks, > -Eric > > (A recap of Hongbo's original cover letter is below, edited slightly for > this series:) > > Since many filesystems have done the new mount API conversion, > we introduce the new mount API conversion in f2fs. > > The series can be applied on top of the current mainline tree > and the work is based on the patches from Lukas Czerner (has > done this in ext4[1]). His patch give me a lot of ideas. > > Here is a high level description of the patchset: > > 1. Prepare the f2fs mount parameters required by the new mount > API and use it for parsing, while still using the old API to > get mount options string. Split the parameter parsing and > validation of the parse_options helper into two separate > helpers. > > f2fs: Add fs parameter specifications for mount options > f2fs: move the option parser into handle_mount_opt > > 2. Remove the use of sb/sbi structure of f2fs from all the > parsing code, because with the new mount API the parsing is > going to be done before we even get the super block. In this > part, we introduce f2fs_fs_context to hold the temporary > options when parsing. For the simple options check, it has > to be done during parsing by using f2fs_fs_context structure. > For the check which needs sb/sbi, we do this during super > block filling. > > f2fs: Allow sbi to be NULL in f2fs_printk > f2fs: Add f2fs_fs_context to record the mount options > f2fs: separate the options parsing and options checking > > 3. Switch the f2fs to use the new mount API for mount and > remount. > > f2fs: introduce fs_context_operation structure > f2fs: switch to the new mount api > > [1] https://lore.kernel.org/all/20211021114508.21407-1-lczer...@redhat.com/ > > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
