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Diffstat (limited to 'fs/gfs2/util.h')
| -rw-r--r-- | fs/gfs2/util.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h new file mode 100644 index 000000000..96ac4aba4 --- /dev/null +++ b/fs/gfs2/util.h @@ -0,0 +1,176 @@ +/* + * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. + * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. + * + * This copyrighted material is made available to anyone wishing to use, + * modify, copy, or redistribute it subject to the terms and conditions + * of the GNU General Public License version 2. + */ + +#ifndef __UTIL_DOT_H__ +#define __UTIL_DOT_H__ + +#ifdef pr_fmt +#undef pr_fmt +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#endif + +#include <linux/mempool.h> + +#include "incore.h" + +#define fs_emerg(fs, fmt, ...) \ + pr_emerg("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__) +#define fs_warn(fs, fmt, ...) \ + pr_warn("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__) +#define fs_err(fs, fmt, ...) \ + pr_err("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__) +#define fs_info(fs, fmt, ...) \ + pr_info("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__) + +void gfs2_assert_i(struct gfs2_sbd *sdp); + +#define gfs2_assert(sdp, assertion) \ +do { \ + if (unlikely(!(assertion))) { \ + gfs2_assert_i(sdp); \ + BUG(); \ + } \ +} while (0) + + +int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, + const char *function, char *file, unsigned int line); + +#define gfs2_assert_withdraw(sdp, assertion) \ +((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \ + __func__, __FILE__, __LINE__)) + + +int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, + const char *function, char *file, unsigned int line); + +#define gfs2_assert_warn(sdp, assertion) \ +((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \ + __func__, __FILE__, __LINE__)) + + +int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, + const char *function, char *file, unsigned int line); + +#define gfs2_consist(sdp) \ +gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__) + + +int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, + const char *function, char *file, unsigned int line); + +#define gfs2_consist_inode(ip) \ +gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__) + + +int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, + const char *function, char *file, unsigned int line); + +#define gfs2_consist_rgrpd(rgd) \ +gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__) + + +int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, + const char *type, const char *function, + char *file, unsigned int line); + +static inline int gfs2_meta_check(struct gfs2_sbd *sdp, + struct buffer_head *bh) +{ + struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data; + u32 magic = be32_to_cpu(mh->mh_magic); + if (unlikely(magic != GFS2_MAGIC)) { + pr_err("Magic number missing at %llu\n", + (unsigned long long)bh->b_blocknr); + return -EIO; + } + return 0; +} + +int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, + u16 type, u16 t, + const char *function, + char *file, unsigned int line); + +static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp, + struct buffer_head *bh, + u16 type, + const char *function, + char *file, unsigned int line) +{ + struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data; + u32 magic = be32_to_cpu(mh->mh_magic); + u16 t = be32_to_cpu(mh->mh_type); + if (unlikely(magic != GFS2_MAGIC)) + return gfs2_meta_check_ii(sdp, bh, "magic number", function, + file, line); + if (unlikely(t != type)) + return gfs2_metatype_check_ii(sdp, bh, type, t, function, + file, line); + return 0; +} + +#define gfs2_metatype_check(sdp, bh, type) \ +gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__) + +static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type, + u16 format) +{ + struct gfs2_meta_header *mh; + mh = (struct gfs2_meta_header *)bh->b_data; + mh->mh_type = cpu_to_be32(type); + mh->mh_format = cpu_to_be32(format); +} + + +int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, + char *file, unsigned int line); + +#define gfs2_io_error(sdp) \ +gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__); + + +void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, + const char *function, char *file, unsigned int line, + bool withdraw); + +#define gfs2_io_error_bh_wd(sdp, bh) \ +gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, true); + +#define gfs2_io_error_bh(sdp, bh) \ +gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, false); + + +extern struct kmem_cache *gfs2_glock_cachep; +extern struct kmem_cache *gfs2_glock_aspace_cachep; +extern struct kmem_cache *gfs2_inode_cachep; +extern struct kmem_cache *gfs2_bufdata_cachep; +extern struct kmem_cache *gfs2_rgrpd_cachep; +extern struct kmem_cache *gfs2_quotad_cachep; +extern struct kmem_cache *gfs2_qadata_cachep; +extern mempool_t *gfs2_page_pool; +extern struct workqueue_struct *gfs2_control_wq; + +static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt, + unsigned int *p) +{ + unsigned int x; + spin_lock(>->gt_spin); + x = *p; + spin_unlock(>->gt_spin); + return x; +} + +#define gfs2_tune_get(sdp, field) \ +gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field) + +__printf(2, 3) +int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...); + +#endif /* __UTIL_DOT_H__ */ |