diff options
Diffstat (limited to 'fs/cifs/inode.c')
| -rw-r--r-- | fs/cifs/inode.c | 71 |
1 files changed, 55 insertions, 16 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index a22d667f106..a174605f6af 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -22,6 +22,7 @@ #include <linux/stat.h> #include <linux/slab.h> #include <linux/pagemap.h> +#include <linux/freezer.h> #include <asm/div64.h> #include "cifsfs.h" #include "cifspdu.h" @@ -117,7 +118,7 @@ cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr) cifs_dbg(FYI, "%s: invalidating inode %llu mapping\n", __func__, cifs_i->uniqueid); - cifs_i->invalid_mapping = true; + set_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags); } /* @@ -177,7 +178,10 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) else cifs_i->time = jiffies; - cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING; + if (fattr->cf_flags & CIFS_FATTR_DELETE_PENDING) + set_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags); + else + clear_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags); cifs_i->server_eof = fattr->cf_eof; /* @@ -1121,7 +1125,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, } /* try to set DELETE_ON_CLOSE */ - if (!cifsInode->delete_pending) { + if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) { rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid, current->tgid); /* @@ -1138,7 +1142,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, rc = -EBUSY; goto undo_rename; } - cifsInode->delete_pending = true; + set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags); } out_close: @@ -1759,23 +1763,62 @@ int cifs_invalidate_mapping(struct inode *inode) { int rc = 0; - struct cifsInodeInfo *cifs_i = CIFS_I(inode); - - cifs_i->invalid_mapping = false; if (inode->i_mapping && inode->i_mapping->nrpages != 0) { rc = invalidate_inode_pages2(inode->i_mapping); - if (rc) { + if (rc) cifs_dbg(VFS, "%s: could not invalidate inode %p\n", __func__, inode); - cifs_i->invalid_mapping = true; - } } cifs_fscache_reset_inode_cookie(inode); return rc; } +/** + * cifs_wait_bit_killable - helper for functions that are sleeping on bit locks + * @word: long word containing the bit lock + */ +static int +cifs_wait_bit_killable(void *word) +{ + if (fatal_signal_pending(current)) + return -ERESTARTSYS; + freezable_schedule_unsafe(); + return 0; +} + +int +cifs_revalidate_mapping(struct inode *inode) +{ + int rc; + unsigned long *flags = &CIFS_I(inode)->flags; + + rc = wait_on_bit_lock(flags, CIFS_INO_LOCK, cifs_wait_bit_killable, + TASK_KILLABLE); + if (rc) + return rc; + + if (test_and_clear_bit(CIFS_INO_INVALID_MAPPING, flags)) { + rc = cifs_invalidate_mapping(inode); + if (rc) + set_bit(CIFS_INO_INVALID_MAPPING, flags); + } + + clear_bit_unlock(CIFS_INO_LOCK, flags); + smp_mb__after_atomic(); + wake_up_bit(flags, CIFS_INO_LOCK); + + return rc; +} + +int +cifs_zap_mapping(struct inode *inode) +{ + set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags); + return cifs_revalidate_mapping(inode); +} + int cifs_revalidate_file_attr(struct file *filp) { int rc = 0; @@ -1842,9 +1885,7 @@ int cifs_revalidate_file(struct file *filp) if (rc) return rc; - if (CIFS_I(inode)->invalid_mapping) - rc = cifs_invalidate_mapping(inode); - return rc; + return cifs_revalidate_mapping(inode); } /* revalidate a dentry's inode attributes */ @@ -1857,9 +1898,7 @@ int cifs_revalidate_dentry(struct dentry *dentry) if (rc) return rc; - if (CIFS_I(inode)->invalid_mapping) - rc = cifs_invalidate_mapping(inode); - return rc; + return cifs_revalidate_mapping(inode); } int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |