diff options
| author | NeilBrown <neilb@suse.de> | 2006-03-25 03:07:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-25 08:22:58 -0800 |
| commit | 7e53cac41da9ebb9be774220c1b2615182667c9d (patch) | |
| tree | e7da5e8189ed1949d091d28e132736542352b739 /fs/namei.c | |
| parent | 341546f5ad6fce584531f744853a5807a140f2a9 (diff) | |
| download | lwn-7e53cac41da9ebb9be774220c1b2615182667c9d.tar.gz lwn-7e53cac41da9ebb9be774220c1b2615182667c9d.zip | |
[PATCH] Honour AOP_TRUNCATE_PAGE returns in page_symlink
As prepare_write, commit_write and readpage are allowed to return
AOP_TRUNCATE_PAGE, page_symlink should respond to them.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/namei.c b/fs/namei.c index 1baf1b06fe47..712dfc77793b 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2627,16 +2627,27 @@ int __page_symlink(struct inode *inode, const char *symname, int len, int err = -ENOMEM; char *kaddr; +retry: page = find_or_create_page(mapping, 0, gfp_mask); if (!page) goto fail; err = mapping->a_ops->prepare_write(NULL, page, 0, len-1); + if (err == AOP_TRUNCATED_PAGE) { + page_cache_release(page); + goto retry; + } if (err) goto fail_map; kaddr = kmap_atomic(page, KM_USER0); memcpy(kaddr, symname, len-1); kunmap_atomic(kaddr, KM_USER0); - mapping->a_ops->commit_write(NULL, page, 0, len-1); + err = mapping->a_ops->commit_write(NULL, page, 0, len-1); + if (err == AOP_TRUNCATED_PAGE) { + page_cache_release(page); + goto retry; + } + if (err) + goto fail_map; /* * Notice that we are _not_ going to block here - end of page is * unmapped, so this will only try to map the rest of page, see @@ -2646,7 +2657,8 @@ int __page_symlink(struct inode *inode, const char *symname, int len, */ if (!PageUptodate(page)) { err = mapping->a_ops->readpage(NULL, page); - wait_on_page_locked(page); + if (err != AOP_TRUNCATED_PAGE) + wait_on_page_locked(page); } else { unlock_page(page); } |