fix: Support filesystems that don't send Create events#21844
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Wilfred wants to merge 2 commits intorust-lang:masterfrom
Open
fix: Support filesystems that don't send Create events#21844Wilfred wants to merge 2 commits intorust-lang:masterfrom
Wilfred wants to merge 2 commits intorust-lang:masterfrom
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This is not a logical change, and just makes the next commit simpler. It also shouldn't impact performance, because the vast majority of events have a single path.
On some filesystems, particularly FUSE on Linux, we don't get
Create(...) events. We do get Access(Open(Any)) events, so handle
those consistently with create/modify/remove events.
This fixes missed file notifications when using Sapling SCM with
EdenFS, although I believe the problem can occur on other FUSE
environments.
Reproduction:
Commit a change with Sapling that adds a new file foo.rs and
references it with `mod foo;` in lib.rs. Configure rust-analyzer as
follows:
```
{
"rust-analyzer.files.watcher": "server",
"rust-analyzer.server.extraEnv": {
"RA_LOG": "vfs_notify=debug"
},
}
```
Go to the previous commit, restart rust-analyzer, then go to the next
commit. The logs only show:
```
2026-03-18T07:16:54.211788903-07:00 DEBUG vfs-notify event event=NotifyEvent(Ok(Event { kind: Access(Open(Any)), paths: ["/data/users/wilfred/scratch/src/foo.rs"], attr:tracker: None, attr:flag: None, attr:info: None, attr:source: None }))
2026-03-18T07:16:54.211906733-07:00 DEBUG vfs-notify event event=NotifyEvent(Ok(Event { kind: Access(Open(Any)), paths: ["/data/users/wilfred/scratch/src/foo.rs"], attr:tracker: None, attr:flag: None, attr:info: None, attr:source: None }))
2026-03-18T07:16:54.216467168-07:00 DEBUG vfs-notify event event=NotifyEvent(Ok(Event { kind: Access(Open(Any)), paths: ["/data/users/wilfred/scratch/src/lib.rs"], attr:tracker: None, attr:flag: None, attr:info: None, attr:source: None }))
2026-03-18T07:16:54.216811304-07:00 DEBUG vfs-notify event event=NotifyEvent(Ok(Event { kind: Access(Open(Any)), paths: ["/data/users/wilfred/scratch/src/lib.rs"], attr:tracker: None, attr:flag: None, attr:info: None, attr:source: None }))
```
Observe that `mod foo;` has a red squiggle and shows "unresolved
module, can't find module file: foo.rs, or foo/mod.rs". This
commit fixes that.
rustbot
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ChayimFriedman2
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Mar 22, 2026
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|
I've tested on FUSE a bunch, but not much on non-FUSE. I can get you some more thorough benchmarks next week, I don't have much time for r-a this week I'm afraid. |
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On some filesystems, particularly FUSE on Linux, we don't get Create(...) events. We do get Access(Open(Any)) events, so handle those consistently with create/modify/remove events.
This fixes missed file notifications when using Sapling SCM with EdenFS, although I believe the problem can occur on other FUSE environments.
See the individual commit messages for more details.