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-rw-r--r--debian/patches/ext2fs-two-pagers.patch243
1 files changed, 0 insertions, 243 deletions
diff --git a/debian/patches/ext2fs-two-pagers.patch b/debian/patches/ext2fs-two-pagers.patch
deleted file mode 100644
index 6d9d6dee..00000000
--- a/debian/patches/ext2fs-two-pagers.patch
+++ /dev/null
@@ -1,243 +0,0 @@
-commit 6c2cd694f8bb88181bf9a808fc63a5e6463f0386
-Author: Justus Winter <4winter@informatik.uni-hamburg.de>
-Date: Sat Apr 26 19:48:18 2014 +0200
-
- ext2fs: use two distinct pager buckets for the disk and file pager
-
- ext2fs has two kinds of pagers. One for the files, one for the disk.
- Previously, both were in the same port bucket.
-
- If a request for a file pager arrives, it most likely touches some
- metadata (like the superblock). This is in turn backed by the disk
- pager, so another request is generated for the disk pager.
-
- Seperate all pagers clearly by using two port buckets. This will
- enable us to use a single thread per port bucket in the future.
-
- * ext2fs/pager.c (pager_bucket): Rename to...
- (disk_pager_bucket): ... this to make the change explicit at every
- occurrence.
- (file_pager_bucket): New variable.
- (service_paging_requests): New function.
- (create_disk_pager): Also create the file pager.
- (diskfs_get_filemap): Handout pagers from the file_pager_bucket.
- (diskfs_shutdown_pager): This is only concerned with the file pager.
- Simplify code accordingly.
- (diskfs_sync_everything): Likewise.
- (diskfs_pager_users): Likewise.
- (diskfs_max_user_pager_prot): Likewise.
- (disable_caching): Iterate over both buckets.
- (enable_caching): Likewise.
-
-diff --git a/ext2fs/pager.c b/ext2fs/pager.c
-index 6e99c83..f3e9489 100644
---- a/ext2fs/pager.c
-+++ b/ext2fs/pager.c
-@@ -21,14 +21,18 @@
- #include <unistd.h>
- #include <string.h>
- #include <errno.h>
-+#include <error.h>
- #include <hurd/store.h>
- #include "ext2fs.h"
-
- /* XXX */
- #include "../libpager/priv.h"
-
--/* A ports bucket to hold pager ports. */
--struct port_bucket *pager_bucket;
-+/* A ports bucket to hold disk pager ports. */
-+struct port_bucket *disk_pager_bucket;
-+
-+/* A ports bucket to hold file pager ports. */
-+struct port_bucket *file_pager_bucket;
-
- pthread_spinlock_t node_to_page_lock = PTHREAD_SPINLOCK_INITIALIZER;
-
-@@ -1188,21 +1192,56 @@ disk_cache_block_is_ref (block_t block)
- return ref;
- }
-
--/* Create the DISK pager. */
-+/* A top-level function for the paging thread that just services paging
-+ requests. */
-+static void *
-+service_paging_requests (void *arg)
-+{
-+ struct port_bucket *pager_bucket = arg;
-+ ports_manage_port_operations_multithread (pager_bucket,
-+ pager_demuxer,
-+ 1000,
-+ 0,
-+ NULL);
-+ /* Not reached. */
-+ return NULL;
-+}
-+
-+/* Create the disk pager, and the file pager. */
- void
- create_disk_pager (void)
- {
-+ pthread_t thread;
-+ pthread_attr_t attr;
-+ error_t err;
-+
-+ /* The disk pager. */
- struct user_pager_info *upi = malloc (sizeof (struct user_pager_info));
- if (!upi)
- ext2_panic ("can't create disk pager: %s", strerror (errno));
- upi->type = DISK;
-- pager_bucket = ports_create_bucket ();
-+ disk_pager_bucket = ports_create_bucket ();
- get_hypermetadata ();
- disk_cache_blocks = DISK_CACHE_BLOCKS;
- disk_cache_size = disk_cache_blocks << log2_block_size;
-- diskfs_start_disk_pager (upi, pager_bucket, MAY_CACHE, 1,
-+ diskfs_start_disk_pager (upi, disk_pager_bucket, MAY_CACHE, 1,
- disk_cache_size, &disk_cache);
- disk_cache_init ();
-+
-+ /* The file pager. */
-+ file_pager_bucket = ports_create_bucket ();
-+
-+#define STACK_SIZE (64 * 1024)
-+ pthread_attr_init (&attr);
-+ pthread_attr_setstacksize (&attr, STACK_SIZE);
-+#undef STACK_SIZE
-+
-+ /* Make a thread to service file paging requests. */
-+ err = pthread_create (&thread, &attr,
-+ service_paging_requests, file_pager_bucket);
-+ if (err)
-+ error (2, err, "pthread_create");
-+ pthread_detach (thread);
- }
-
- /* Call this to create a FILE_DATA pager and return a send right.
-@@ -1241,7 +1280,7 @@ diskfs_get_filemap (struct node *node, vm_prot_t prot)
- upi->max_prot = prot;
- diskfs_nref_light (node);
- node->dn->pager =
-- pager_create (upi, pager_bucket, MAY_CACHE,
-+ pager_create (upi, file_pager_bucket, MAY_CACHE,
- MEMORY_OBJECT_COPY_DELAY, 0);
- if (node->dn->pager == 0)
- {
-@@ -1324,14 +1363,13 @@ diskfs_shutdown_pager ()
- error_t shutdown_one (void *v_p)
- {
- struct pager *p = v_p;
-- if (p != diskfs_disk_pager)
-- pager_shutdown (p);
-+ pager_shutdown (p);
- return 0;
- }
-
- write_all_disknodes ();
-
-- ports_bucket_iterate (pager_bucket, shutdown_one);
-+ ports_bucket_iterate (file_pager_bucket, shutdown_one);
-
- /* Sync everything on the the disk pager. */
- sync_global (1);
-@@ -1347,13 +1385,12 @@ diskfs_sync_everything (int wait)
- error_t sync_one (void *v_p)
- {
- struct pager *p = v_p;
-- if (p != diskfs_disk_pager)
-- pager_sync (p, wait);
-+ pager_sync (p, wait);
- return 0;
- }
-
- write_all_disknodes ();
-- ports_bucket_iterate (pager_bucket, sync_one);
-+ ports_bucket_iterate (file_pager_bucket, sync_one);
-
- /* Do things on the the disk pager. */
- sync_global (wait);
-@@ -1372,7 +1409,8 @@ disable_caching ()
-
- /* Loop through the pagers and turn off caching one by one,
- synchronously. That should cause termination of each pager. */
-- ports_bucket_iterate (pager_bucket, block_cache);
-+ ports_bucket_iterate (disk_pager_bucket, block_cache);
-+ ports_bucket_iterate (file_pager_bucket, block_cache);
- }
-
- static void
-@@ -1400,7 +1438,8 @@ enable_caching ()
- return 0;
- }
-
-- ports_bucket_iterate (pager_bucket, enable_cache);
-+ ports_bucket_iterate (disk_pager_bucket, enable_cache);
-+ ports_bucket_iterate (file_pager_bucket, enable_cache);
- }
-
- /* Tell diskfs if there are pagers exported, and if none, then
-@@ -1408,7 +1447,7 @@ enable_caching ()
- int
- diskfs_pager_users ()
- {
-- int npagers = ports_count_bucket (pager_bucket);
-+ int npagers = ports_count_bucket (file_pager_bucket);
-
- if (npagers <= 1)
- return 0;
-@@ -1421,8 +1460,8 @@ diskfs_pager_users ()
- immediately. XXX */
- sleep (1);
-
-- npagers = ports_count_bucket (pager_bucket);
-- if (npagers <= 1)
-+ npagers = ports_count_bucket (file_pager_bucket);
-+ if (npagers == 0)
- return 0;
-
- /* Darn, there are actual honest users. Turn caching back on,
-@@ -1430,7 +1469,7 @@ diskfs_pager_users ()
- enable_caching ();
- }
-
-- ports_enable_bucket (pager_bucket);
-+ ports_enable_bucket (file_pager_bucket);
-
- return 1;
- }
-@@ -1441,17 +1480,15 @@ vm_prot_t
- diskfs_max_user_pager_prot ()
- {
- vm_prot_t max_prot = 0;
-- int npagers = ports_count_bucket (pager_bucket);
-+ int npagers = ports_count_bucket (file_pager_bucket);
-
-- if (npagers > 1)
-- /* More than just the disk pager. */
-+ if (npagers > 0)
- {
- error_t add_pager_max_prot (void *v_p)
- {
- struct pager *p = v_p;
- struct user_pager_info *upi = pager_get_upi (p);
-- if (upi->type == FILE_DATA)
-- max_prot |= upi->max_prot;
-+ max_prot |= upi->max_prot;
- /* Stop iterating if MAX_PROT is as filled as it's going to get. */
- return
- (max_prot == (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)) ? 1 : 0;
-@@ -1463,12 +1500,12 @@ diskfs_max_user_pager_prot ()
- immediately. XXX */
- sleep (1);
-
-- ports_bucket_iterate (pager_bucket, add_pager_max_prot);
-+ ports_bucket_iterate (file_pager_bucket, add_pager_max_prot);
-
- enable_caching ();
- }
-
-- ports_enable_bucket (pager_bucket);
-+ ports_enable_bucket (file_pager_bucket);
-
- return max_prot;
- }
generated by cgit v1.2.3 (git 2.46.0) at 2025-05-01 16:37:48 +0000