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Add asynchronous I/O supports for page cache

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This commit is contained in:
Yingdi Shan
2024-03-20 13:57:49 +08:00
committed by Tate, Hongliang Tian
parent 223e8c2fe5
commit 679a8d8d98
7 changed files with 122 additions and 55 deletions
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13
kernel/aster-nix/src/fs/exfat/inode.rs
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@ -5,6 +5,7 @@ use core::{cmp::Ordering, time::Duration};
pub(super) use align_ext::AlignExt;
use aster_block::{
bio::BioWaiter,
id::{Bid, BlockId},
BLOCK_SIZE,
};
@ -131,20 +132,20 @@ struct ExfatInodeInner {
}
impl PageCacheBackend for ExfatInode {
fn read_page(&self, idx: usize, frame: &VmFrame) -> Result<()> {
fn read_page(&self, idx: usize, frame: &VmFrame) -> Result<BioWaiter> {
let inner = self.inner.read();
if inner.size < idx * PAGE_SIZE {
return_errno_with_message!(Errno::EINVAL, "Invalid read size")
}
let sector_id = inner.get_sector_id(idx * PAGE_SIZE / inner.fs().sector_size())?;
inner.fs().block_device().read_block_sync(
let waiter = inner.fs().block_device().read_block(
BlockId::from_offset(sector_id * inner.fs().sector_size()),
frame,
)?;
Ok(())
Ok(waiter)
}
fn write_page(&self, idx: usize, frame: &VmFrame) -> Result<()> {
fn write_page(&self, idx: usize, frame: &VmFrame) -> Result<BioWaiter> {
let inner = self.inner.read();
let sector_size = inner.fs().sector_size();
@ -152,11 +153,11 @@ impl PageCacheBackend for ExfatInode {
// FIXME: We may need to truncate the file if write_page fails.
// To fix this issue, we need to change the interface of the PageCacheBackend trait.
inner.fs().block_device().write_block_sync(
let waiter = inner.fs().block_device().write_block(
BlockId::from_offset(sector_id * inner.fs().sector_size()),
frame,
)?;
Ok(())
Ok(waiter)
}
fn npages(&self) -> usize {