/* File: fs/ext2/acl.h (C) 2001 Andreas Gruenbacher, */ #include #define EXT2_ACL_VERSION 0x0001 typedef struct { __le16 e_tag; __le16 e_perm; __le32 e_id; } ext2_acl_entry; typedef struct { __le16 e_tag; __le16 e_perm; } ext2_acl_entry_short; typedef struct { __le32 a_version; } ext2_acl_header; static inline size_t ext2_acl_size(int count) { if (count <= 4) { return sizeof(ext2_acl_header) + count * sizeof(ext2_acl_entry_short); } else { return sizeof(ext2_acl_header) + 4 * sizeof(ext2_acl_entry_short) + (count - 4) * sizeof(ext2_acl_entry); } } static inline int ext2_acl_count(size_t size) { ssize_t s; size -= sizeof(ext2_acl_header); s = size - 4 * sizeof(ext2_acl_entry_short); if (s < 0) { if (size % sizeof(ext2_acl_entry_short)) return -1; return size / sizeof(ext2_acl_entry_short); } else { if (s % sizeof(ext2_acl_entry)) return -1; return s / sizeof(ext2_acl_entry) + 4; } } #ifdef CONFIG_EXT2_FS_POSIX_ACL /* acl.c */ extern struct posix_acl *ext2_get_acl(struct inode *inode, int type); extern int ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int ext2_init_acl (struct inode *, struct inode *); #else #include #define ext2_get_acl NULL #define ext2_set_acl NULL static inline int ext2_init_acl (struct inode *inode, struct inode *dir) { return 0; } #endif s='sub'>net-next plumbingsTobias Klauser
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authorMarc Zyngier <marc.zyngier@arm.com>2017-01-17 16:00:48 +0000
committerThomas Gleixner <tglx@linutronix.de>2017-01-30 15:18:56 +0100
commit08d85f3ea99f1eeafc4e8507936190e86a16ee8c (patch)
tree410bb1acd0cd7dcfaad37ae7b63ff243b7fa4bee /include/scsi/fc_encode.h
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
irqdomain: Avoid activating interrupts more than once
Since commit f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early"), we can end-up activating a PCI/MSI twice (once at allocation time, and once at startup time). This is normally of no consequences, except that there is some HW out there that may misbehave if activate is used more than once (the GICv3 ITS, for example, uses the activate callback to issue the MAPVI command, and the architecture spec says that "If there is an existing mapping for the EventID-DeviceID combination, behavior is UNPREDICTABLE"). While this could be worked around in each individual driver, it may make more sense to tackle the issue at the core level. In order to avoid getting in that situation, let's have a per-interrupt flag to remember if we have already activated that interrupt or not. Fixes: f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early") Reported-and-tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484668848-24361-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/scsi/fc_encode.h')