diff options
Diffstat (limited to 'fs/gfs2/ops_super.c')
| -rw-r--r-- | fs/gfs2/ops_super.c | 112 |
1 files changed, 92 insertions, 20 deletions
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c index 1c17acc946f9..317d497f8f88 100644 --- a/fs/gfs2/ops_super.c +++ b/fs/gfs2/ops_super.c @@ -19,6 +19,7 @@ #include <linux/kthread.h> #include <linux/delay.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include "gfs2.h" #include "lm_interface.h" @@ -36,6 +37,10 @@ #include "super.h" #include "sys.h" #include "util.h" +#include "trans.h" +#include "dir.h" +#include "eattr.h" +#include "bmap.h" /** * gfs2_write_inode - Make sure the inode is stable on the disk @@ -47,12 +52,15 @@ static int gfs2_write_inode(struct inode *inode, int sync) { - struct gfs2_inode *ip = inode->u.generic_ip; - - if (current->flags & PF_MEMALLOC) - return 0; - if (ip && sync) - gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl); + struct gfs2_inode *ip = GFS2_I(inode); + + /* Check this is a "normal" inode */ + if (inode->u.generic_ip) { + if (current->flags & PF_MEMALLOC) + return 0; + if (sync) + gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl); + } return 0; } @@ -78,7 +86,6 @@ static void gfs2_put_super(struct super_block *sb) gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); mutex_unlock(&sdp->sd_freeze_lock); - kthread_stop(sdp->sd_inoded_process); kthread_stop(sdp->sd_quotad_process); kthread_stop(sdp->sd_logd_process); kthread_stop(sdp->sd_recoverd_process); @@ -110,11 +117,9 @@ static void gfs2_put_super(struct super_block *sb) gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); gfs2_glock_dq_uninit(&sdp->sd_ir_gh); gfs2_glock_dq_uninit(&sdp->sd_sc_gh); - gfs2_glock_dq_uninit(&sdp->sd_ut_gh); gfs2_glock_dq_uninit(&sdp->sd_qc_gh); iput(sdp->sd_ir_inode); iput(sdp->sd_sc_inode); - iput(sdp->sd_ut_inode); iput(sdp->sd_qc_inode); } @@ -274,16 +279,20 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) static void gfs2_clear_inode(struct inode *inode) { - struct gfs2_inode *ip = inode->u.generic_ip; - - if (ip) { - spin_lock(&ip->i_spin); - ip->i_vnode = NULL; - inode->u.generic_ip = NULL; - spin_unlock(&ip->i_spin); - + /* This tells us its a "real" inode and not one which only + * serves to contain an address space (see rgrp.c, meta_io.c) + * which therefore doesn't have its own glocks. + */ + if (inode->u.generic_ip) { + struct gfs2_inode *ip = GFS2_I(inode); + gfs2_glock_inode_squish(inode); + gfs2_assert(inode->i_sb->s_fs_info, ip->i_gl->gl_state == LM_ST_UNLOCKED); + ip->i_gl->gl_object = NULL; gfs2_glock_schedule_for_reclaim(ip->i_gl); - gfs2_inode_put(ip); + gfs2_glock_put(ip->i_gl); + ip->i_gl = NULL; + if (ip->i_iopen_gh.gh_gl) + gfs2_glock_dq_uninit(&ip->i_iopen_gh); } } @@ -361,6 +370,70 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt) return 0; } +/* + * We have to (at the moment) hold the inodes main lock to cover + * the gap between unlocking the shared lock on the iopen lock and + * taking the exclusive lock. I'd rather do a shared -> exclusive + * conversion on the iopen lock, but we can change that later. This + * is safe, just less efficient. + */ +static void gfs2_delete_inode(struct inode *inode) +{ + struct gfs2_sbd *sdp = inode->i_sb->s_fs_info; + struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_holder gh; + int error; + + if (!inode->u.generic_ip) + goto out; + + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &gh); + if (unlikely(error)) { + gfs2_glock_dq_uninit(&ip->i_iopen_gh); + goto out; + } + + gfs2_glock_dq(&ip->i_iopen_gh); + gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &ip->i_iopen_gh); + error = gfs2_glock_nq(&ip->i_iopen_gh); + if (error) + goto out_uninit; + + if (S_ISDIR(ip->i_di.di_mode) && + (ip->i_di.di_flags & GFS2_DIF_EXHASH)) { + error = gfs2_dir_exhash_dealloc(ip); + if (error) + goto out_unlock; + } + + if (ip->i_di.di_eattr) { + error = gfs2_ea_dealloc(ip); + if (error) + goto out_unlock; + } + + if (!gfs2_is_stuffed(ip)) { + error = gfs2_file_dealloc(ip); + if (error) + goto out_unlock; + } + + error = gfs2_dinode_dealloc(ip); + +out_unlock: + gfs2_glock_dq(&ip->i_iopen_gh); +out_uninit: + gfs2_holder_uninit(&ip->i_iopen_gh); + gfs2_glock_dq_uninit(&gh); + if (error) + fs_warn(sdp, "gfs2_delete_inode: %d\n", error); +out: + truncate_inode_pages(&inode->i_data, 0); + clear_inode(inode); +} + + + static struct inode *gfs2_alloc_inode(struct super_block *sb) { struct gfs2_sbd *sdp = sb->s_fs_info; @@ -370,8 +443,6 @@ static struct inode *gfs2_alloc_inode(struct super_block *sb) if (ip) { ip->i_flags = 0; ip->i_gl = NULL; - ip->i_sbd = sdp; - ip->i_vnode = &ip->i_inode; ip->i_greedy = gfs2_tune_get(sdp, gt_greedy_default); ip->i_last_pfault = jiffies; } @@ -387,6 +458,7 @@ struct super_operations gfs2_super_ops = { .alloc_inode = gfs2_alloc_inode, .destroy_inode = gfs2_destroy_inode, .write_inode = gfs2_write_inode, + .delete_inode = gfs2_delete_inode, .put_super = gfs2_put_super, .write_super = gfs2_write_super, .write_super_lockfs = gfs2_write_super_lockfs, |