| Message ID | 20230605-fs-overlayfs-mount_api-v3-0-730d9646b27d@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | ovl: port to new mount api & updated layer parsing | expand |
On Tue, Jun 13, 2023 at 5:49 PM Christian Brauner <brauner@kernel.org> wrote: > > Hey everyone, > > /* v3 */ > (1) Add a patch that makes sure that struct ovl_layer starts with a > pointer to struct vfsmount as ovl_free_fs() relies on this during > cleanup. > (2) Rebase on top of overlayfs-next brought in substantial rework due to > the data layer work. I had to redo a bunch of the parsing and adapt > it to the new changes. Sorry for that pain. I do like your version much better than mine :) For the entire series: Reviewed-by: Amir Goldstein <amir73il@gmail.com> Thanks, Amir. > > This ports overlayfs to the new mount api and modifies layer parsing to > allow for additive layer specification via fsconfig(). > > This passes xfstests including the new data layer lookup work. Here's a > 500 layer overlayfs mount including a couple of data only layers: > > 1094 28 0:48 / /mnt/test rw,relatime shared:214 - overlay none rw,lowerdir=/mnt/ovl-lower1:/mnt/ovl-lower2:/mnt/ovl-lower3:/mnt/ovl-lower4:/mnt/ovl-lower5:/mnt/ovl-lower6:/mnt/ovl-lower7:/mnt/ovl-lower8:/mnt/ovl-lower9:/mnt/ovl-lower10:/mnt/ovl-lower11:/mnt/ovl-lower12:/mnt/ovl-lower13:/mnt/ovl-lower14:/mnt/ovl-lower15:/mnt/ovl-lower16:/mnt/ovl-lower17:/mnt/ovl-lower18:/mnt/ovl-lower19:/mnt/ovl-lower20:/mnt/ovl-lower21:/mnt/ovl-lower22:/mnt/ovl-lower23:/mnt/ovl-lower24:/mnt/ovl-lower25:/mnt/ovl-lower26:/mnt/ovl-lower27:/mnt/ovl-lower28:/mnt/ovl-lower29:/mnt/ovl-lower30:/mnt/ovl-lower31:/mnt/ovl-lower32:/mnt/ovl-lower33:/mnt/ovl-lower34:/mnt/ovl-lower35:/mnt/ovl-lower36:/mnt/ovl-lower37:/mnt/ovl-lower38:/mnt/ovl-lower39:/mnt/ovl-lower40:/mnt/ovl-lower41:/mnt/ovl-lower42:/mnt/ovl-lower43:/mnt/ovl-lower44:/mnt/ovl-lower45:/mnt/ovl-lower46:/mnt/ovl-lower47:/mnt/ovl-lower48:/mnt/ovl-lower49:/mnt/ovl-lower50:/mnt/ovl-lower51:/mnt/ovl-lower52:/mnt/ovl-lower53:/mnt/ovl-lower54:/mnt/ovl-lower > 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erdir=/mnt/ovl-upper,workdir=/mnt/ovl-work,redirect_dir=on,index=on,metacopy=on > > Christian > > Signed-off-by: Christian Brauner <brauner@kernel.org> > --- > Changes in v3: > - Fix potential NULL deref in ovl_init_fs_context(). > - Don't create one long mount option string for lowerdir. Just use > seq_printf() to create it on demand. > - Link to v2: https://lore.kernel.org/r/20230605-fs-overlayfs-mount_api-v2-0-3da91c97e0c0@kernel.org > > Changes in v2: > - Split into two patches. First patch ports to new mount api without changing > layer parsing. Second patch implements new layer parsing. > - Move layer parsing into a separate file. > - Link to v1: https://lore.kernel.org/r/20230605-fs-overlayfs-mount_api-v1-1-a8d78c3fbeaf@kernel.org > > --- > > > > --- > base-commit: f777c8266c1230fa44de7261b61a13d787b27f44 > change-id: 20230605-fs-overlayfs-mount_api-20ea8b04eff4 >
On Tue, Jun 13, 2023 at 6:02 PM Amir Goldstein <amir73il@gmail.com> wrote: > > On Tue, Jun 13, 2023 at 5:49 PM Christian Brauner <brauner@kernel.org> wrote: > > > > Hey everyone, > > > > /* v3 */ > > (1) Add a patch that makes sure that struct ovl_layer starts with a > > pointer to struct vfsmount as ovl_free_fs() relies on this during > > cleanup. > > (2) Rebase on top of overlayfs-next brought in substantial rework due to > > the data layer work. I had to redo a bunch of the parsing and adapt > > it to the new changes. > > Sorry for that pain. > I do like your version much better than mine :) > > For the entire series: > > Reviewed-by: Amir Goldstein <amir73il@gmail.com> > Miklos, If you like, I prepared a pull-able branch at: https://github.com/amir73il/linux/commits/fs-overlayfs-mount_api With some more cleanups. I will post the cleanup patches soon. The branch above already passed basic sanity tests. I will run more tests on it, but if you can to push it to overlayfs-next for soaking, that would be great. Thanks, Amir.
Hey everyone, /* v3 */ (1) Add a patch that makes sure that struct ovl_layer starts with a pointer to struct vfsmount as ovl_free_fs() relies on this during cleanup. (2) Rebase on top of overlayfs-next brought in substantial rework due to the data layer work. I had to redo a bunch of the parsing and adapt it to the new changes. This ports overlayfs to the new mount api and modifies layer parsing to allow for additive layer specification via fsconfig(). This passes xfstests including the new data layer lookup work. Here's a 500 layer overlayfs mount including a couple of data only layers: 1094 28 0:48 / /mnt/test rw,relatime shared:214 - overlay none rw,lowerdir=/mnt/ovl-lower1:/mnt/ovl-lower2:/mnt/ovl-lower3:/mnt/ovl-lower4:/mnt/ovl-lower5:/mnt/ovl-lower6:/mnt/ovl-lower7:/mnt/ovl-lower8:/mnt/ovl-lower9:/mnt/ovl-lower10:/mnt/ovl-lower11:/mnt/ovl-lower12:/mnt/ovl-lower13:/mnt/ovl-lower14:/mnt/ovl-lower15:/mnt/ovl-lower16:/mnt/ovl-lower17:/mnt/ovl-lower18:/mnt/ovl-lower19:/mnt/ovl-lower20:/mnt/ovl-lower21:/mnt/ovl-lower22:/mnt/ovl-lower23:/mnt/ovl-lower24:/mnt/ovl-lower25:/mnt/ovl-lower26:/mnt/ovl-lower27:/mnt/ovl-lower28:/mnt/ovl-lower29:/mnt/ovl-lower30:/mnt/ovl-lower31:/mnt/ovl-lower32:/mnt/ovl-lower33:/mnt/ovl-lower34:/mnt/ovl-lower35:/mnt/ovl-lower36:/mnt/ovl-lower37:/mnt/ovl-lower38:/mnt/ovl-lower39:/mnt/ovl-lower40:/mnt/ovl-lower41:/mnt/ovl-lower42:/mnt/ovl-lower43:/mnt/ovl-lower44:/mnt/ovl-lower45:/mnt/ovl-lower46:/mnt/ovl-lower47:/mnt/ovl-lower48:/mnt/ovl-lower49:/mnt/ovl-lower50:/mnt/ovl-lower51:/mnt/ovl-lower52:/mnt/ovl-lower53:/mnt/ovl-lower54:/mnt/ovl-lower 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erdir=/mnt/ovl-upper,workdir=/mnt/ovl-work,redirect_dir=on,index=on,metacopy=on Christian Signed-off-by: Christian Brauner <brauner@kernel.org> --- Changes in v3: - Fix potential NULL deref in ovl_init_fs_context(). - Don't create one long mount option string for lowerdir. Just use seq_printf() to create it on demand. - Link to v2: https://lore.kernel.org/r/20230605-fs-overlayfs-mount_api-v2-0-3da91c97e0c0@kernel.org Changes in v2: - Split into two patches. First patch ports to new mount api without changing layer parsing. Second patch implements new layer parsing. - Move layer parsing into a separate file. - Link to v1: https://lore.kernel.org/r/20230605-fs-overlayfs-mount_api-v1-1-a8d78c3fbeaf@kernel.org --- --- base-commit: f777c8266c1230fa44de7261b61a13d787b27f44 change-id: 20230605-fs-overlayfs-mount_api-20ea8b04eff4