[haiku-commits] haiku: hrev48151 - src/system/kernel/fs src/system/kernel headers/private/kernel

From: ingo_weinhold@xxxxxx
To: haiku-commits@xxxxxxxxxxxxx
Date: Wed, 29 Oct 2014 21:07:08 +0100 (CET)
hrev48151 adds 2 changesets to branch 'master'
old head: f9f19f02463199d35c7d981d88fb3daf416cf7ba
new head: dfb13a87166f6802fa7949f13e73e292034b6672
overview: http://cgit.haiku-os.org/haiku/log/?qt=range&q=dfb13a8+%5Ef9f19f0

----------------------------------------------------------------------------

6bbd25f: Make vfs_resize_fd_table() accessible in the kernel
  
  Also update some types from int to uint32.

dfb13a8: Increase the size of the kernel FD table
  
  With packagefs potentially opening quite a few packages the default of
  256 slots is a bit tight. It's 4096 now, which should be safe for a
  while, but we might want to consider resizing the table dynamically and
  probably even switching to another algorithm for allocating the slots.
  
  Should fix #11328.

                                    [ Ingo Weinhold <ingo_weinhold@xxxxxx> ]

----------------------------------------------------------------------------

3 files changed, 10 insertions(+), 6 deletions(-)
headers/private/kernel/vfs.h |  1 +
src/system/kernel/fs/vfs.cpp | 12 ++++++------
src/system/kernel/team.cpp   |  3 +++

############################################################################

Commit:      6bbd25f071e5981c15444c8ba28a92b145b77566
URL:         http://cgit.haiku-os.org/haiku/commit/?id=6bbd25f
Author:      Ingo Weinhold <ingo_weinhold@xxxxxx>
Date:        Wed Oct 29 20:01:29 2014 UTC

Make vfs_resize_fd_table() accessible in the kernel

Also update some types from int to uint32.

----------------------------------------------------------------------------

diff --git a/headers/private/kernel/vfs.h b/headers/private/kernel/vfs.h
index a5c9dfc..c9e6a28 100644
--- a/headers/private/kernel/vfs.h
+++ b/headers/private/kernel/vfs.h
@@ -73,6 +73,7 @@ io_context*   vfs_new_io_context(io_context* parentContext,
                                bool purgeCloseOnExec);
 void           vfs_get_io_context(io_context *context);
 void           vfs_put_io_context(io_context *context);
+status_t       vfs_resize_fd_table(struct io_context* context, uint32 newSize);
 
 int                    vfs_getrlimit(int resource, struct rlimit *rlp);
 int                    vfs_setrlimit(int resource, const struct rlimit *rlp);
diff --git a/src/system/kernel/fs/vfs.cpp b/src/system/kernel/fs/vfs.cpp
index fa67829..3c44885 100644
--- a/src/system/kernel/fs/vfs.cpp
+++ b/src/system/kernel/fs/vfs.cpp
@@ -4941,23 +4941,23 @@ vfs_put_io_context(io_context* context)
 }
 
 
-static status_t
-vfs_resize_fd_table(struct io_context* context, const int newSize)
+status_t
+vfs_resize_fd_table(struct io_context* context, uint32 newSize)
 {
-       if (newSize <= 0 || newSize > MAX_FD_TABLE_SIZE)
+       if (newSize == 0 || newSize > MAX_FD_TABLE_SIZE)
                return B_BAD_VALUE;
 
        TIOC(ResizeIOContext(context, newSize));
 
        MutexLocker _(context->io_mutex);
 
-       int oldSize = context->table_size;
+       uint32 oldSize = context->table_size;
        int oldCloseOnExitBitmapSize = (oldSize + 7) / 8;
        int newCloseOnExitBitmapSize = (newSize + 7) / 8;
 
        // If the tables shrink, make sure none of the fds being dropped are in 
use.
        if (newSize < oldSize) {
-               for (int i = oldSize; i-- > newSize;) {
+               for (uint32 i = oldSize; i-- > newSize;) {
                        if (context->fds[i])
                                return B_BUSY;
                }
@@ -4982,7 +4982,7 @@ vfs_resize_fd_table(struct io_context* context, const int 
newSize)
        context->table_size = newSize;
 
        // copy entries from old tables
-       int toCopy = min_c(oldSize, newSize);
+       uint32 toCopy = min_c(oldSize, newSize);
 
        memcpy(context->fds, oldFDs, sizeof(void*) * toCopy);
        memcpy(context->select_infos, oldSelectInfos, sizeof(void*) * toCopy);

############################################################################

Revision:    hrev48151
Commit:      dfb13a87166f6802fa7949f13e73e292034b6672
URL:         http://cgit.haiku-os.org/haiku/commit/?id=dfb13a8
Author:      Ingo Weinhold <ingo_weinhold@xxxxxx>
Date:        Wed Oct 29 20:06:27 2014 UTC

Ticket:      https://dev.haiku-os.org/ticket/11328

Increase the size of the kernel FD table

With packagefs potentially opening quite a few packages the default of
256 slots is a bit tight. It's 4096 now, which should be safe for a
while, but we might want to consider resizing the table dynamically and
probably even switching to another algorithm for allocating the slots.

Should fix #11328.

----------------------------------------------------------------------------

diff --git a/src/system/kernel/team.cpp b/src/system/kernel/team.cpp
index e8c58de..3fb33aa 100644
--- a/src/system/kernel/team.cpp
+++ b/src/system/kernel/team.cpp
@@ -2793,6 +2793,9 @@ team_init(kernel_args* args)
        if (sKernelTeam->io_context == NULL)
                panic("could not create io_context for kernel team!\n");
 
+       if (vfs_resize_fd_table(sKernelTeam->io_context, 4096) != B_OK)
+               dprintf("Failed to resize FD table for kernel team!\n");
+
        // stick it in the team hash
        sTeamHash.Insert(sKernelTeam);
[haiku-commits] haiku: hrev48151 - src/system/kernel/fs src/system/kernel headers/private/kernel

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