From ac9b9c667c2e1194e22ebe0a441ae1c37aaa9b90 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Thu, 20 Oct 2005 16:24:28 +0100 Subject: [PATCH] Fix handling spurious page fault for hugetlb region This reverts commit 3359b54c8c07338f3a863d1109b42eebccdcf379 and replaces it with a cleaner version that is purely based on page table operations, so that the synchronization between inode size and hugetlb mappings becomes moot. Signed-off-by: Hugh Dickins Signed-off-by: Linus Torvalds --- include/linux/hugetlb.h | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 42cb7d70f9ac..d664330d900e 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -25,6 +25,8 @@ int is_hugepage_mem_enough(size_t); unsigned long hugetlb_total_pages(void); struct page *alloc_huge_page(void); void free_huge_page(struct page *); +int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, + unsigned long address, int write_access); extern unsigned long max_huge_pages; extern const unsigned long hugetlb_zero, hugetlb_infinity; @@ -99,6 +101,7 @@ static inline unsigned long hugetlb_total_pages(void) do { } while (0) #define alloc_huge_page() ({ NULL; }) #define free_huge_page(p) ({ (void)(p); BUG(); }) +#define hugetlb_fault(mm, vma, addr, write) ({ BUG(); 0; }) #ifndef HPAGE_MASK #define HPAGE_MASK 0 /* Keep the compiler happy */ @@ -155,24 +158,11 @@ static inline void set_file_hugepages(struct file *file) { file->f_op = &hugetlbfs_file_operations; } - -static inline int valid_hugetlb_file_off(struct vm_area_struct *vma, - unsigned long address) -{ - struct inode *inode = vma->vm_file->f_dentry->d_inode; - loff_t file_off = address - vma->vm_start; - - file_off += (vma->vm_pgoff << PAGE_SHIFT); - - return (file_off < inode->i_size); -} - #else /* !CONFIG_HUGETLBFS */ #define is_file_hugepages(file) 0 #define set_file_hugepages(file) BUG() #define hugetlb_zero_setup(size) ERR_PTR(-ENOSYS) -#define valid_hugetlb_file_off(vma, address) 0 #endif /* !CONFIG_HUGETLBFS */ -- cgit v1.2.3 From 8d3b35914aa54232b27e6a2b57d84092aadc5e86 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sun, 23 Oct 2005 12:57:18 -0700 Subject: [PATCH] inotify/idr leak fix Fix a bug which was reported and diagnosed by Stefan Jones IDR trees include a cache of idr_layer objects. There's no way to destroy this cache, so when we discard an overall idr tree we end up leaking some memory. Add and use idr_destroy() for this. v9fs and infiniband also need to use idr_destroy() to avoid leaks. Or, we make the cache global, like radix_tree_preload(). Which is probably better. Later. Cc: Eric Van Hensbergen Cc: Roland Dreier Cc: Robert Love Cc: John McCutchan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/inotify.c | 1 + include/linux/idr.h | 1 + lib/idr.c | 13 +++++++++++++ 3 files changed, 15 insertions(+) (limited to 'include/linux') diff --git a/fs/inotify.c b/fs/inotify.c index a37e9fb1da58..9fbaebfdf40b 100644 --- a/fs/inotify.c +++ b/fs/inotify.c @@ -176,6 +176,7 @@ static inline void put_inotify_dev(struct inotify_device *dev) if (atomic_dec_and_test(&dev->count)) { atomic_dec(&dev->user->inotify_devs); free_uid(dev->user); + idr_destroy(&dev->idr); kfree(dev); } } diff --git a/include/linux/idr.h b/include/linux/idr.h index ca3b7e462576..3d5de45f961b 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -75,4 +75,5 @@ int idr_pre_get(struct idr *idp, unsigned gfp_mask); int idr_get_new(struct idr *idp, void *ptr, int *id); int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id); void idr_remove(struct idr *idp, int id); +void idr_destroy(struct idr *idp); void idr_init(struct idr *idp); diff --git a/lib/idr.c b/lib/idr.c index 6415d053e2bf..d4df21debc4d 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -345,6 +345,19 @@ void idr_remove(struct idr *idp, int id) } EXPORT_SYMBOL(idr_remove); +/** + * idr_destroy - release all cached layers within an idr tree + * idp: idr handle + */ +void idr_destroy(struct idr *idp) +{ + while (idp->id_free_cnt) { + struct idr_layer *p = alloc_layer(idp); + kmem_cache_free(idr_layer_cache, p); + } +} +EXPORT_SYMBOL(idr_destroy); + /** * idr_find - return pointer for given id * @idp: idr handle -- cgit v1.2.3 From add7b58e7558dd2894f3c17ca8574099fcba5c15 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Mon, 24 Oct 2005 22:11:57 +0100 Subject: [SERIAL] support the Exsys EX-4055 4S four-port card Tested by Wolfgang Denk with this device: 00:0f.0 Network controller: PLX Technology, Inc. PCI <-> IOBus Bridge (rev 01) Subsystem: Exsys EX-4055 4S(16C550) RS-232 Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Signed-off-by: Russell King --- drivers/serial/8250_pci.c | 25 ++++++++++++++++++++++++- include/linux/pci_ids.h | 1 + 2 files changed, 25 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c index 0e21f583690e..5da61ebbac88 100644 --- a/drivers/serial/8250_pci.c +++ b/drivers/serial/8250_pci.c @@ -226,8 +226,10 @@ static int __devinit pci_plx9050_init(struct pci_dev *dev) } irq_config = 0x41; - if (dev->vendor == PCI_VENDOR_ID_PANACOM) + if (dev->vendor == PCI_VENDOR_ID_PANACOM || + dev->subsystem_vendor == PCI_SUBVENDOR_ID_EXSYS) { irq_config = 0x43; + } if ((dev->vendor == PCI_VENDOR_ID_PLX) && (dev->device == PCI_DEVICE_ID_PLX_ROMULUS)) { /* @@ -661,6 +663,15 @@ static struct pci_serial_quirk pci_serial_quirks[] = { /* * PLX */ + { + .vendor = PCI_VENDOR_ID_PLX, + .device = PCI_DEVICE_ID_PLX_9050, + .subvendor = PCI_SUBVENDOR_ID_EXSYS, + .subdevice = PCI_SUBDEVICE_ID_EXSYS_4055, + .init = pci_plx9050_init, + .setup = pci_default_setup, + .exit = __devexit_p(pci_plx9050_exit), + }, { .vendor = PCI_VENDOR_ID_PLX, .device = PCI_DEVICE_ID_PLX_9050, @@ -927,6 +938,7 @@ enum pci_board_num_t { pbn_panacom, pbn_panacom2, pbn_panacom4, + pbn_exsys_4055, pbn_plx_romulus, pbn_oxsemi, pbn_intel_i960, @@ -1292,6 +1304,13 @@ static struct pciserial_board pci_boards[] __devinitdata = { .reg_shift = 7, }, + [pbn_exsys_4055] = { + .flags = FL_BASE2, + .num_ports = 4, + .base_baud = 115200, + .uart_offset = 8, + }, + /* I think this entry is broken - the first_offset looks wrong --rmk */ [pbn_plx_romulus] = { .flags = FL_BASE2, @@ -1853,6 +1872,10 @@ static struct pci_device_id serial_pci_tbl[] = { PCI_SUBVENDOR_ID_CHASE_PCIRAS, PCI_SUBDEVICE_ID_CHASE_PCIRAS8, 0, 0, pbn_b2_8_460800 }, + { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, + PCI_SUBVENDOR_ID_EXSYS, + PCI_SUBDEVICE_ID_EXSYS_4055, 0, 0, + pbn_exsys_4055 }, /* * Megawolf Romulus PCI Serial Card, from Mike Hudson * (Exoray@isys.ca) diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index f74ed9462475..ca0691c319ab 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2696,6 +2696,7 @@ #define PCI_SUBVENDOR_ID_EXSYS 0xd84d #define PCI_SUBDEVICE_ID_EXSYS_4014 0x4014 +#define PCI_SUBDEVICE_ID_EXSYS_4055 0x4055 #define PCI_VENDOR_ID_TIGERJET 0xe159 #define PCI_DEVICE_ID_TIGERJET_300 0x0001 -- cgit v1.2.3 From 551f8f0e87becb415c522adccab524a7a05ca83a Mon Sep 17 00:00:00 2001 From: Justin Chen Date: Mon, 24 Oct 2005 22:16:38 +0100 Subject: [SERIAL] new hp diva console port Add the new ID 0x132a and configure the new PCI Diva console port. This device supports only 1 single console UART. Signed-off-by: Andrew Morton Signed-off-by: Russell King --- drivers/serial/8250_pci.c | 1 + include/linux/pci_ids.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c index 5da61ebbac88..5c3c03932d6d 100644 --- a/drivers/serial/8250_pci.c +++ b/drivers/serial/8250_pci.c @@ -152,6 +152,7 @@ static int __devinit pci_hp_diva_init(struct pci_dev *dev) rc = 4; break; case PCI_DEVICE_ID_HP_DIVA_POWERBAR: + case PCI_DEVICE_ID_HP_DIVA_HURRICANE: rc = 1; break; } diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index ca0691c319ab..71834f05504f 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -723,6 +723,7 @@ #define PCI_DEVICE_ID_HP_DIVA_EVEREST 0x1282 #define PCI_DEVICE_ID_HP_DIVA_AUX 0x1290 #define PCI_DEVICE_ID_HP_DIVA_RMP3 0x1301 +#define PCI_DEVICE_ID_HP_DIVA_HURRICANE 0x132a #define PCI_DEVICE_ID_HP_CISS 0x3210 #define PCI_DEVICE_ID_HP_CISSA 0x3220 #define PCI_DEVICE_ID_HP_CISSB 0x3222 -- cgit v1.2.3