diff options
Diffstat (limited to 'fs/gfs2/rgrp.h')
| -rw-r--r-- | fs/gfs2/rgrp.h | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h index ceec9106cdf..463ab2e95d1 100644 --- a/fs/gfs2/rgrp.h +++ b/fs/gfs2/rgrp.h @@ -11,6 +11,15 @@ #define __RGRP_DOT_H__ #include <linux/slab.h> +#include <linux/uaccess.h> + +/* Since each block in the file system is represented by two bits in the + * bitmap, one 64-bit word in the bitmap will represent 32 blocks. + * By reserving 32 blocks at a time, we can optimize / shortcut how we search + * through the bitmaps by looking a word at a time. + */ +#define RGRP_RSRV_MINBYTES 8 +#define RGRP_RSRV_MINBLKS ((u32)(RGRP_RSRV_MINBYTES * GFS2_NBBY)) struct gfs2_rgrpd; struct gfs2_sbd; @@ -18,7 +27,7 @@ struct gfs2_holder; extern void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd); -extern struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk); +extern struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk, bool exact); extern struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp); extern struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd); @@ -28,20 +37,18 @@ extern void gfs2_free_clones(struct gfs2_rgrpd *rgd); extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh); extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh); -extern struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip); -static inline void gfs2_qadata_put(struct gfs2_inode *ip) -{ - BUG_ON(ip->i_qadata == NULL); - kfree(ip->i_qadata); - ip->i_qadata = NULL; -} +extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip); -extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested); +#define GFS2_AF_ORLOV 1 +extern int gfs2_inplace_reserve(struct gfs2_inode *ip, const struct gfs2_alloc_parms *ap); extern void gfs2_inplace_release(struct gfs2_inode *ip); extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n, bool dinode, u64 *generation); +extern int gfs2_rs_alloc(struct gfs2_inode *ip); +extern void gfs2_rs_deltree(struct gfs2_blkreserv *rs); +extern void gfs2_rs_delete(struct gfs2_inode *ip, atomic_t *wcount); extern void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta); extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen); extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip); @@ -61,9 +68,16 @@ extern void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist, extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state); extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist); extern u64 gfs2_ri_total(struct gfs2_sbd *sdp); -extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl); -extern void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, - struct buffer_head *bh, - const struct gfs2_bitmap *bi); +extern void gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl); +extern int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, + struct buffer_head *bh, + const struct gfs2_bitmap *bi, unsigned minlen, u64 *ptrimmed); +extern int gfs2_fitrim(struct file *filp, void __user *argp); + +/* This is how to tell if a reservation is in the rgrp tree: */ +static inline bool gfs2_rs_active(struct gfs2_blkreserv *rs) +{ + return rs && !RB_EMPTY_NODE(&rs->rs_node); +} #endif /* __RGRP_DOT_H__ */ |