#include <linux/crc32.h>
#include <linux/lm_interface.h>
#include <linux/security.h>
+#include <linux/time.h>
#include "gfs2.h"
#include "incore.h"
{
struct gfs2_dinode_host *di = &ip->i_di;
const struct gfs2_dinode *str = buf;
+ struct timespec atime;
u16 height, depth;
if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
di->di_size = be64_to_cpu(str->di_size);
i_size_write(&ip->i_inode, di->di_size);
gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
- ip->i_inode.i_atime.tv_sec = be64_to_cpu(str->di_atime);
- ip->i_inode.i_atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
+ atime.tv_sec = be64_to_cpu(str->di_atime);
+ atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
+ if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
+ ip->i_inode.i_atime = atime;
ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
if (bh)
brelse(bh);
- if (!inode)
- return ERR_PTR(-ENOMEM);
return inode;
fail_gunlock2:
gfs2_glock_dq_uninit(ghs + 1);
- if (inode)
+ if (inode && !IS_ERR(inode))
iput(inode);
fail_gunlock:
gfs2_glock_dq(ghs);
return 0;
}
-/*
- * gfs2_ok_to_move - check if it's ok to move a directory to another directory
- * @this: move this
- * @to: to here
- *
- * Follow @to back to the root and make sure we don't encounter @this
- * Assumes we already hold the rename lock.
- *
- * Returns: errno
- */
-
-int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to)
-{
- struct inode *dir = &to->i_inode;
- struct super_block *sb = dir->i_sb;
- struct inode *tmp;
- struct qstr dotdot;
- int error = 0;
-
- gfs2_str2qstr(&dotdot, "..");
-
- igrab(dir);
-
- for (;;) {
- if (dir == &this->i_inode) {
- error = -EINVAL;
- break;
- }
- if (dir == sb->s_root->d_inode) {
- error = 0;
- break;
- }
-
- tmp = gfs2_lookupi(dir, &dotdot, 1);
- if (IS_ERR(tmp)) {
- error = PTR_ERR(tmp);
- break;
- }
-
- iput(dir);
- dir = tmp;
- }
-
- iput(dir);
-
- return error;
-}
-
/**
* gfs2_readlinki - return the contents of a symlink
* @ip: the symlink's inode
unsigned int x;
int error;
- gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME, &i_gh);
- error = gfs2_glock_nq_atime(&i_gh);
+ gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
+ error = gfs2_glock_nq(&i_gh);
if (error) {
gfs2_holder_uninit(&i_gh);
return error;
return error;
}
-/**
- * gfs2_glock_nq_atime - Acquire a hold on an inode's glock, and
- * conditionally update the inode's atime
- * @gh: the holder to acquire
- *
- * Tests atime (access time) for gfs2_read, gfs2_readdir and gfs2_mmap
- * Update if the difference between the current time and the inode's current
- * atime is greater than an interval specified at mount.
- *
- * Returns: errno
- */
-
-int gfs2_glock_nq_atime(struct gfs2_holder *gh)
-{
- struct gfs2_glock *gl = gh->gh_gl;
- struct gfs2_sbd *sdp = gl->gl_sbd;
- struct gfs2_inode *ip = gl->gl_object;
- s64 quantum = gfs2_tune_get(sdp, gt_atime_quantum);
- unsigned int state;
- int flags;
- int error;
- struct timespec tv = CURRENT_TIME;
-
- if (gfs2_assert_warn(sdp, gh->gh_flags & GL_ATIME) ||
- gfs2_assert_warn(sdp, !(gh->gh_flags & GL_ASYNC)) ||
- gfs2_assert_warn(sdp, gl->gl_ops == &gfs2_inode_glops))
- return -EINVAL;
-
- state = gh->gh_state;
- flags = gh->gh_flags;
-
- error = gfs2_glock_nq(gh);
- if (error)
- return error;
-
- if (test_bit(SDF_NOATIME, &sdp->sd_flags) ||
- (sdp->sd_vfs->s_flags & MS_RDONLY))
- return 0;
-
- if (tv.tv_sec - ip->i_inode.i_atime.tv_sec >= quantum) {
- gfs2_glock_dq(gh);
- gfs2_holder_reinit(LM_ST_EXCLUSIVE, gh->gh_flags & ~LM_FLAG_ANY,
- gh);
- error = gfs2_glock_nq(gh);
- if (error)
- return error;
-
- /* Verify that atime hasn't been updated while we were
- trying to get exclusive lock. */
-
- tv = CURRENT_TIME;
- if (tv.tv_sec - ip->i_inode.i_atime.tv_sec >= quantum) {
- struct buffer_head *dibh;
- struct gfs2_dinode *di;
-
- error = gfs2_trans_begin(sdp, RES_DINODE, 0);
- if (error == -EROFS)
- return 0;
- if (error)
- goto fail;
-
- error = gfs2_meta_inode_buffer(ip, &dibh);
- if (error)
- goto fail_end_trans;
-
- ip->i_inode.i_atime = tv;
-
- gfs2_trans_add_bh(ip->i_gl, dibh, 1);
- di = (struct gfs2_dinode *)dibh->b_data;
- di->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
- di->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec);
- brelse(dibh);
-
- gfs2_trans_end(sdp);
- }
-
- /* If someone else has asked for the glock,
- unlock and let them have it. Then reacquire
- in the original state. */
- if (gfs2_glock_is_blocking(gl)) {
- gfs2_glock_dq(gh);
- gfs2_holder_reinit(state, flags, gh);
- return gfs2_glock_nq(gh);
- }
- }
-
- return 0;
-
-fail_end_trans:
- gfs2_trans_end(sdp);
-fail:
- gfs2_glock_dq(gh);
- return error;
-}
-
static int
__gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
{
projects / linux-2.6-omap-h63xx.git / blobdiff