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path: root/fs/bfs/bfs.h
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/*
 *	fs/bfs/bfs.h
 *	Copyright (C) 1999 Tigran Aivazian <tigran@veritas.com>
 */
#ifndef _FS_BFS_BFS_H
#define _FS_BFS_BFS_H

#include <linux/bfs_fs.h>

/*
 * BFS file system in-core superblock info
 */
struct bfs_sb_info {
	unsigned long si_blocks;
	unsigned long si_freeb;
	unsigned long si_freei;
	unsigned long si_lf_eblk;
	unsigned long si_lasti;
	unsigned long *si_imap;
	struct mutex bfs_lock;
};

/*
 * BFS file system in-core inode info
 */
struct bfs_inode_info {
	unsigned long i_dsk_ino; /* inode number from the disk, can be 0 */
	unsigned long i_sblock;
	unsigned long i_eblock;
	struct inode vfs_inode;
};

static inline struct bfs_sb_info *BFS_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}

static inline struct bfs_inode_info *BFS_I(struct inode *inode)
{
	return container_of(inode, struct bfs_inode_info, vfs_inode);
}


#define printf(format, args...) \
	printk(KERN_ERR "BFS-fs: %s(): " format, __func__, ## args)

/* inode.c */
extern struct inode *bfs_iget(struct super_block *sb, unsigned long ino);
extern void bfs_dump_imap(const char *, struct super_block *);

/* file.c */
extern const struct inode_operations bfs_file_inops;
extern const struct file_operations bfs_file_operations;
extern const struct address_space_operations bfs_aops;

/* dir.c */
extern const struct inode_operations bfs_dir_inops;
extern const struct file_operations bfs_dir_operations;

#endif /* _FS_BFS_BFS_H */
rm_kms_helper] drm_fb_helper_restore_fbdev_mode_unlocked+0x34/0x80 [drm_kms_helper] drm_fb_helper_set_par+0x2d/0x60 [drm_kms_helper] intel_fbdev_set_par+0x18/0x70 [i915] fb_set_var+0x236/0x460 fbcon_blank+0x30f/0x350 do_unblank_screen+0xd2/0x1a0 vt_ioctl+0x507/0x12a0 tty_ioctl+0x355/0xc30 do_vfs_ioctl+0xa3/0x5e0 SyS_ioctl+0x79/0x90 entry_SYSCALL_64_fastpath+0x13/0x94 - i915 unpin_work workqueue: intel_unpin_work_fn+0x58/0x140 [i915] process_one_work+0x1f1/0x480 worker_thread+0x48/0x4d0 kthread+0x101/0x140 and this patch purely papers over the issue by adding a NULL pointer check and a WARN_ON_ONCE() to avoid the oops that would then generally make the machine unresponsive. Other callers of i915_gem_object_to_ggtt() seem to also check for the returned pointer being NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/xfs/libxfs/xfs_bmap.c')