mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-10-30 14:08:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

fatfs: migrate to advanced buffer cache

Browse Source
This commit is contained in:
Matheus
2026-07-14 14:42:53 -03:00
parent 967ca19436
commit c0cf666e5f
5 changed files with 86 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/fs/fat/fatfs.c
+12 -5
View File
@@ -82,7 +82,7 @@ static int fatfs_mount(vfs_t **vfs, vnode_t *mp, vnode_t *backing, void *data) {
bpb_t bpb;
size_t read_count;
int error = vfs_read(backing, &bpb, sizeof(bpb), 0, &read_count, 0);
int error = vfs_read(backing, &bpb, sizeof(bpb), 0, &read_count, V_FFLAGS_NOCACHE);
if (error)
return error;
@@ -182,6 +182,14 @@ static int fatfs_mount(vfs_t **vfs, vnode_t *mp, vnode_t *backing, void *data) {
fatfs->fat_count = bpb.fat_count;
fatfs->cluster_size = bpb.bytes_per_sector * bpb.sectors_per_cluster;
error = abc_init(&fatfs->abc, backing, bpb.bytes_per_sector);
if (error) {
VOP_RELEASE(backing);
hashtable_destroy(&fatfs->vnode_map);
free(fatfs);
return error;
}
return error;
}
@@ -191,6 +199,7 @@ static int fatfs_unmount(vfs_t *vfs) {
static int fatfs_sync(vfs_t *vfs) {
fatfs_t *fatfs = (fatfs_t *)vfs;
abc_sync(&fatfs->abc);
VOP_LOCK(fatfs->backing);
int error = mm_cache_sync_vnode(fatfs->backing, 0, UINT64_MAX);
VOP_UNLOCK(fatfs->backing);
@@ -256,6 +265,7 @@ static int fatfs_syncvnode(vnode_t *vnode) {
// sync file data
int e = mm_cache_sync_vnode(vnode, 0, UINT64_MAX);
abc_sync(&fs->abc);
VOP_LOCK(fs->backing);
// sync the dent
@@ -784,16 +794,13 @@ static int fatfs_rename(vnode_t *vsource_dir, vnode_t *vsource, char *old_name,
memcpy(new_dent.short_name, target_dent.short_name, 11);
// already exists, switch it up
size_t written;
error = vfs_write(fatfs->backing, &new_dent, sizeof(new_dent), dent_disk_offset, &written, 0);
error = fatfs_disk_rw(fatfs, &new_dent, sizeof(new_dent), dent_disk_offset, true, true);
if (error) {
VOP_UNLOCK(vtarget);
VOP_RELEASE(vtarget);
return error;
}
__assert(written == sizeof(new_dent));
MUTEX_ACQUIRE(&fatfs->vnode_map_mutex);
// remove from the vnode map
__assert(hashtable_remove(&fatfs->vnode_map, &dent_disk_offset, sizeof(dent_disk_offset)) == 0);